1024-Position, Digital Potentiometer with
Maximum ±1% R-Tolerance Error and 20-TP Memory
AD5292-EP
Data Sheet
FEATURES
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC)
Temperature range: −55°C to +125°C
Controlled manufacturing baseline
1 assembly/test site
1 fabrication site
Enhanced product change notification
Qualification data available on request
FUNCTIONAL BLOCK DIAGRAM
VDD
RESET
AD5292-EP
POWER-ON
RESET
VLOGIC
RDAC
REGISTER
SCLK
SYNC
SERIAL
INTERFACE
DATA
W
OTP
MEMORY
BLOCK
DIN
A
B
SDO
RDY
VSS
EXT_CAP
GND
10095-001
Single-channel, 1024-position resolution
20 kΩ nominal resistance
Maximum ±1% nominal resistor tolerance error (resistor
performance mode)
20-times programmable wiper memory
Rheostat mode temperature coefficient: 35 ppm/°C
Voltage divider temperature coefficient: 5 ppm/°C
+9 V to +33 V single-supply operation
±9 V to ±16.5 V dual-supply operation
SPI-compatible serial interface
Wiper setting readback
Power-on refreshed from 20-TP memory
Figure 1.
APPLICATIONS
Mechanical potentiometer replacement
Instrumentation: gain and offset adjustment
Programmable voltage-to-current conversion
Programmable filters, delays, and time constants
Programmable power supply
Low resolution DAC replacement
Sensor calibration
GENERAL DESCRIPTION
The AD5292-EP is a single-channel, 1024-position digital
potentiometer1 that combines industry leading variable resistor
performance with nonvolatile memory (NVM) in a compact
package. This device is capable of operating across a wide voltage
range, supporting both dual supply operation at ±10.5 V to ±16.5
V and single-supply operation at +21 V to +33 V, while ensuring
less than 1% end-to-end resistor tolerance error and offering 20time programmable (20-TP) memory.
The AD5292-EP device wiper settings are controllable through
the SPI digital interface. Unlimited adjustments are allowed
before programming the resistance value into the 20-TP memory.
The AD5292-EP does not require any external voltage supply
to facilitate fuse blow, and there are 20 opportunities for permanent programming. During 20-TP activation, a permanent blow
fuse command freezes the wiper position (analogous to placing
epoxy on a mechanical trimmer).
The guaranteed industry leading low resistor tolerance error
feature simplifies open-loop applications as well as precision
calibration and tolerance matching applications.
The AD5292-EP is available in a compact 14-lead TSSOP
package. The part is guaranteed to operate over the extended
industrial temperature range of −55°C to +125°C.
1
The terms digital potentiometer and RDAC are used interchangeably.
Additional application and technical information can be found
in the AD5292 data sheet.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.
AD5292-EP
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1 Interface Timing Specifications...................................................5 Enhanced Product Features ............................................................ 1 Absolute Maximum Ratings ............................................................7 Applications....................................................................................... 1 Thermal Resistance .......................................................................7 Functional Block Diagram .............................................................. 1 ESD Caution...................................................................................7 General Description ......................................................................... 1 Pin Configuration and Function Descriptions..............................8 Revision History ............................................................................... 2 Typical Performance Characteristics ..............................................9 Specifications..................................................................................... 3 Test Circuits..................................................................................... 14 Electrical Characteristics—AD5292-EP.................................... 3 Outline Dimensions ....................................................................... 15 Resistor Performance Mode Code Range ................................. 4 Ordering Guide .......................................................................... 15 REVISION HISTORY
9/11—Revision 0: Initial Version
Rev. 0 | Page 2 of 16
Data Sheet
AD5292-EP
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—AD5292-EP
VDD = 21 V to 33 V, VSS = 0 V; VDD = 10.5 V to 16.5 V, VSS = −10.5 V to −16.5 V; VLOGIC = 2.7 V to 5.5 V, VA = VDD, VB = VSS,
−55°C < TA < +125°C, unless otherwise noted.
Table 1.
Parameter
DC CHARACTERISTICS—RHEOSTAT MODE
Resolution
Resistor Differential Nonlinearity 2
Resistor Integral Nonlinearity2
Nominal Resistor Tolerance (R-Perf Mode) 3
Nominal Resistor Tolerance (Normal
Mode) 4
Resistance Temperature Coefficient
Wiper Resistance
DC CHARACTERISTICS—POTENTIOMETER
DIVIDER MODE
Resolution
Differential Nonlinearity 5
Integral Nonlinearity5
Voltage Divider Temperature Coefficient4
Full-Scale Error
Zero-Scale Error
RESISTOR TERMINALS
Terminal Voltage Range 6
Capacitance A, Capacitance B4
Capacitance W4
Common-Mode Leakage Current4
DIGITAL INPUTS
Input Logic High4
Input Logic Low4
Input Current
Input Capacitance4
DIGITAL OUTPUTS (SDO and RDY)
Output High Voltage4
Output Low Voltage4
Three-State Leakage Current
Output Capacitance4
POWER SUPPLIES
Single-Supply Power Range
Dual-Supply Power Range
Positive Supply Current
Negative Supply Current
Logic Supply Range
Logic Supply Current
OTP Store Current4, 7
OTP Read Current4, 8
Power Dissipation 9
Power Supply Rejection Ratio
Symbol
Conditions
Min
N
R-DNL
R-INL
R-INL
∆RAB/RAB
∆RAB/RAB
RWB, VA = NC
RAB =20 kΩ, |VDD − VSS| = 26 V to 33 V
RAB =20 kΩ, |VDD − VSS| = 21 V to 26 V
See Table 2
10
−1
−2
−3
−1
(∆RAB/RAB)/∆T × 106
RW
Code = full scale; see Figure 14
Code= zero scale
N
DNL
INL
(∆VW/VW)/∆T × 106
VWFSE
VWZSE
VA, VB, VW
CA, CB
CW
ICM
VIH
VIL
IIL
CIL
VOH
VOL
Typ 1
±0.5
±7
35
60
10
−1
−2.5
Code = half scale; see Figure 17
Code = full scale
Code = zero scale
+1
+2
+3
+1
Bits
LSB
LSB
LSB
%
%
100
5
−8
0
−120
+1
10
VDD
65
pF
±1
120
nA
0.8
±1
V
V
μA
pF
GND + 0.4
+1
V
V
μA
pF
VLOGIC − 0.4
−1
5
VSS = 0 V
VDD/VSS = ±16.5 V
VDD/VSS = ±16.5 V
VLOGIC = 5 V, VIH = 5 V or VIL = GND
VIH = 5 V or VIL = GND
VIH = 5 V or VIL = GND
VIH = 5 V or VIL = GND
∆VDD/∆VSS = ±15 V ± 10%
Rev. 0 | Page 3 of 16
9
±9
−2
2.7
Bits
LSB
LSB
ppm/°C
LSB
LSB
V
pF
5
RPULL_UP = 2.2 kΩ to VLOGIC
RPULL_UP = 2.2 kΩ to VLOGIC
ppm/°C
Ω
85
2.0
COL
VDD
VDD/VSS
IDD
ISS
VLOGIC
ILOGIC
ILOGIC_PROG
ILOGIC_FUSE_READ
PDISS
PSRR
Unit
+1
+2.5
VSS
f = 1 MHz, measured to GND,
code = half scale
f = 1 MHz, measured to GND,
code = half scale
VA = VB = VW
JEDEC compliant
VLOGIC = 2.7 V to 5.5 V
VLOGIC = 2.7 V to 5.5 V
VIN = 0 V or VLOGIC
Max
0.1
−0.1
1
25
25
8
0.103
33
±16.5
2
5.5
10
110
V
V
μA
μA
V
μA
mA
mA
μW
%/%
AD5292-EP
Data Sheet
Parameter
DYNAMIC CHARACTERISTICS5, 10
Bandwidth
Total Harmonic Distortion
VW Settling Time
Resistor Noise Density
Symbol
Conditions
BW
THDW
tS
−3 dB
VA = 1 V rms, VB = 0 V, f = 1 kHz
VA = 30 V, VB = 0 V, ±0.5 LSB error
band, initial code = zero scale, board
capacitance = 170 pF
Code = full-scale, normal mode
Code = full-scale, R-Perf mode
Code = half-scale, normal mode
Code = half-scale, R-Perf mode
Code = half-scale, TA = 25°C, 0 kHz to
200 kHz
eN_WB
Min
Typ 1
Max
Unit
520
−93
kHz
dB
750
2.5
2.5
5
10
ns
μs
μs
μs
nV/√Hz
1
Typical values represent average readings at 25°C, VDD = 15 V, VSS = −15 V, and VLOGIC = 5 V.
Resistor position nonlinearity error. R-INL is the deviation from an ideal value measured between RWB at Code 0x00B and Code 0x3FF or between RWA at Code 0x3F3
and Code 0x000. R-DNL measures the relative step change from ideal between successive tap positions. The specification is guaranteed in resistor performance mode,
with a wiper current of 1 mA for VA < 12 V and 1.2 mA for VA ≥ 12 V.
3
Resistor performance mode. The terms resistor performance mode and R-Perf mode are used interchangeably.
4
Guaranteed by design and characterization, not subject to production test.
5
INL and DNL are measured at VW with the RDAC configured as a potentiometer divider similar to a voltage output DAC. VA = VDD and VB = 0 V. DNL specification limits
of ±1 LSB maximum are guaranteed monotonic operating conditions.
6
Resistor Terminal A, Resistor Terminal B, and Resistor Terminal W have no limitations on polarity with respect to each other. Dual-supply operation enables groundreferenced bipolar signal adjustment.
7
Different from operating current; supply current for fuse program lasts approximately 550 μs.
8
Different from operating current; supply current for fuse read lasts approximately 550 μs.
9
PDISS is calculated from (IDD × VDD) + (ISS × VSS) + (ILOGIC × VLOGIC).
10
All dynamic characteristics use VDD = 15 V, VSS = −15 V, and VLOGIC = 5 V.
2
RESISTOR PERFORMANCE MODE CODE RANGE
Table 2.
Resistor
Tolerance per
Code
1% R-Tolerance
2% R-Tolerance
3% R-Tolerance
|VDD − VSS| = 30 V to 33 V
RWB
RWA
From 0x1EF From 0x000
to 0x3FF
to 0x210
From 0x0C3 From 0x000
to 0x3FF
to 0x33C
From 0x073 From 0x000
to 0x3FF
to 0x38C
−55°C < TA < +125°C
|VDD − VSS| = 26 V to 30 V
|VDD − VSS| = 22 V to 26 V
RWB
RWA
RWB
RWA
From 0x1F4 From 0x000 From 0x1F4 From 0x000
to 0x3FF
to 0x20B
to 0x3FF
to 0x20B
From 0x0E6 From 0x000 From 0x131 From 0x000
to 0x3FF
to 0x319
to 0x3FF
to 0x2CE
From 0x087 From 0x000 From 0x0AF From 0x000
to 0x3FF
to 0x378
to 0x3FF
to 0x350
Rev. 0 | Page 4 of 16
|VDD − VSS| = 21 V to 22 V
RWB
RWA
N/A
N/A
From 0x131
to 0x3FF
From 0x0AF
to 0x3FF
From 0x000
to 0x2CE
From 0x000
to 0x350
Data Sheet
AD5292-EP
INTERFACE TIMING SPECIFICATIONS
VDD/VSS = ±15 V, VLOGIC = 2.7 V to 5.5 V, −55°C < TA < +125°C. All specifications TMIN to TMAX, unless otherwise noted.
Table 3.
Parameter
t1 2
t2
t3
t4
t5
t6
t7
t8
t9
t10 4
t114
Limit 1
20
10
10
10
5
5
1
400 3
14
1
40
t124
t124
t
Unit
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns max
Description
SCLK cycle time
SCLK high time
SCLK low time
SYNC to SCLK falling edge setup time
Data setup time
Data hold time
SCLK falling edge to SYNC rising edge
Minimum SYNC high time
SYNC rising edge to next SCLK fall ignore
RDY rising edge to SYNC falling edge
SYNC rising edge to RDY fall time
2.4
μs max
RDY low time, RDAC register write command execute time (R-Perf mode)
410
ns max
RDY low time, RDAC register write command execute time (normal mode)
8
ms max
RDY low time, memory program execute time
t124
1.5
ms min
Software/hardware reset
t134
450
ns max
RDY low time, RDAC register readback execute time
t134
1.3
ms max
RDY low time, memory readback execute time
t144
450
ns max
SCLK rising edge to SDO valid
tRESET
tPOWER-UP 5
20
2
ns min
ms max
Minimum RESET pulse width (asynchronous)
Power-on OTP restore time
124
1
All input signals are specified with tR = tF = 1 ns/V (10% to 90% of VDD) and timed from a voltage level of (VIL + VIH)/2.
Maximum SCLK frequency is 50 MHz.
Refer to t12 and t13 for RDAC register and memory commands operations.
4
RPULL_UP = 2.2 kΩ to VLOGIC, with a capacitance load of 168 pF.
5
Maximum time after VLOGIC is equal to 2.5 V.
2
3
0
0
C3
C2
C1
C0
D9
D8
DB0 (LSB)
D7
D6
D5
D4
DATA BITS
CONTROL BITS
Figure 2. Shift Register Content
Rev. 0 | Page 5 of 16
D3
D2
D1
D0
10095-003
DB9 (MSB)
AD5292-EP
Data Sheet
Timing Diagrams
t4
SCLK
t2
t7
t1
t9
t3
t8
SYNC
t5
t6
X
X
C3
C2
D7
D6
D2
D1
D0
SDO
t11
t10
t12
RDY
tRESET
10095-004
DIN
RESET
Figure 3. Write Timing Diagram, CPOL = 0, CPHA = 1
SCLK
t9
SYNC
DIN
X
X
C3
D0
D0
X
X
C3
D1
D0
t14
X
t11
RDY
X
t13
Figure 4. Read Timing Diagram, CPOL = 0, CPHA = 1
Rev. 0 | Page 6 of 16
C3
D1
D0
10095-005
SDO
Data Sheet
AD5292-EP
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 4.
Parameter
VDD to GND
VSS to GND
VLOGIC to GND
VDD to VSS
VA, VB, VW to GND
Digital Input and Output Voltage to GND
EXT_CAP Voltage to GND
IA, IB, IW
Continuous
Pulsed 1
Frequency > 10 kHz
Frequency ≤ 10 kHz
Operating Temperature Range 3
Maximum Junction Temperature (TJ max)
Storage Temperature Range
Reflow Soldering
Peak Temperature
Time at Peak Temperature
Package Power Dissipation
Rating
−0.3 V to +35 V
+0.3 V to −25 V
−0.3 V to +7 V
35 V
VSS − 0.3 V, VDD + 0.3 V
−0.3 V to VLOGIC + 0.3 V
−0.3 V to +7 V
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θJA is defined by JEDEC specification JESD-51 and the value is
dependent on the test board and test environment.
±3 mA
Table 5. Thermal Resistance
Package Type
14-Lead TSSOP
±3/d 2
±3/√d2
−55°C to +125°C
150°C
−65°C to +150°C
1
θJA
931
θJC
20
JEDEC 2S2P test board, still air (0 m/sec to 1 m/sec air flow).
ESD CAUTION
260°C
20 sec to 40 sec
(TJ max − TA)/θJA
1
Maximum terminal current is bounded by the maximum current handling of
the switches, maximum power dissipation of the package, and maximum
applied voltage across any two of the A, B, and W terminals at a given
resistance.
2
Pulse duty factor.
3
Includes programming of OTP memory.
Rev. 0 | Page 7 of 16
Unit
°C/W
AD5292-EP
Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
RESET 1
14 RDY
VSS 2
W 4
B 5
13 SDO
AD5292-EP
TOP VIEW
(Not to Scale)
12 SYNC
11 SCLK
10 DIN
VDD 6
9
GND
EXT_CAP 7
8
VLOGIC
10095-006
A 3
Figure 5. Pin Configuration
Table 6. Pin Function Descriptions
Pin No.
1
Mnemonic
RESET
2
VSS
3
4
5
6
7
8
A
W
B
VDD
EXT_CAP
VLOGIC
9
10
GND
DIN
11
SCLK
12
SYNC
13
SDO
14
RDY
Description
Hardware Reset Pin. Refreshes the RDAC register with the contents of the 20-TP memory register. Factory
default loads midscale until the first 20-TP wiper memory location is programmed. RESET is activated at the
logic high transition. Tie RESET to VLOGIC if not used.
Negative Supply. Connect to 0 V for single-supply applications. This pin should be decoupled with 0.1 μF
ceramic capacitors and 10 μF capacitors.
Terminal A of RDAC. VSS ≤ VA ≤ VDD.
Wiper Terminal of RDAC. VSS ≤ VW ≤ VDD.
Terminal B of RDAC. VSS ≤ VB ≤ VDD.
Positive Power Supply. This pin should be decoupled with 0.1 μF ceramic capacitors and 10 μF capacitors.
External Capacitor. Connect a 1 μF capacitor to EXT_CAP. This capacitor must have a voltage rating of ≥7 V.
Logic Power Supply; 2.7 V to 5.5 V. This pin should be decoupled with 0.1 μF ceramic capacitors and 10 μF
capacitors.
Ground Pin, Logic Ground Reference.
Serial Data Input. The AD5292-EP has a 16-bit shift register. Data is clocked into the register on the falling edge
of the serial clock input.
Serial Clock Input. Data is clocked into the shift register on the falling edge of the serial clock input. Data can be
transferred at rates up to 50 MHz.
Falling Edge Synchronization Signal. This is the frame synchronization signal for the input data. When SYNC
goes low, it enables the shift register and data is transferred in on the falling edges of the following clocks. The
selected register is updated on the rising edge of SYNC following the 16th clock cycle. If SYNC is taken high
before the 16th clock cycle, the rising edge of SYNC acts as an interrupt, and the write sequence is ignored by
the DAC.
Serial Data Output. This open-drain output requires an external pull-up resistor. SDO can be used to clock data
from the shift register in daisy-chain mode or in readback mode.
Ready Pin. This active-high open-drain output identifies the completion of a write or read operation to or from
the RDAC register or memory.
Rev. 0 | Page 8 of 16
Data Sheet
AD5292-EP
TYPICAL PERFORMANCE CHARACTERISTICS
1.0
0.6
–40°C
+25°C
+105°C
0.8
0.6
0.5
0.4
0.3
0.2
DNL (LSB)
0
–0.2
0.1
0
–0.4
–0.1
–0.6
–0.2
–0.8
0
128
256
384
512
640
768
896
1023
CODE (Decimal)
–0.3
10095-106
–1.0
0.2
128
256
+105°C
+25°C
–40°C
0
384
512
640
768
896
1023
896
1023
896
1023
CODE (Decimal)
Figure 6. R-INL in R-Perf Mode vs. Code
10095-007
INL (LSB)
0.4
Figure 9. R-DNL in R-Perf Mode vs. Code
1.5
0.6
0.5
1.0
0.4
DNL (LSB)
INL (LSB)
0.5
0
–0.5
0.3
0.2
0.1
0
–1.0
128
256
384
512
640
768
896
1023
CODE (Decimal)
–0.2
384
512
640
768
Figure 10. DNL in R-Perf Mode vs. Code
1.0
0.15
0.8
0.10
0.6
0.05
DNL (LSB)
0.4
0.2
0
0
–0.05
–0.10
–0.2
–0.15
128
256
+105°C
+25°C
–40°C
0
384
512
640
768
CODE (Decimal)
896
1023
Figure 8. R-INL in Normal Mode vs. Code
–0.20
128
256
+105°C
+25°C
–40°C
0
384
512
640
768
CODE (Decimal)
Figure 11. R-DNL in Normal Mode vs. Code
Rev. 0 | Page 9 of 16
10095-011
–0.4
10095-010
INL (LSB)
256
CODE (Decimal)
Figure 7. INL in R-Perf Mode vs. Code
–0.6
128
+105°C
+25°C
–40°C
0
10095-015
0
10095-014
–1.5
–0.1
+105°C
+25°C
–40°C
AD5292-EP
Data Sheet
0.8
0.10
–40°C
+25°C
+105°C
0.6
–40°C
+25°C
+105°C
0.05
0.4
0
DNL (LSB)
INL (LSB)
0.2
0
–0.2
–0.05
–0.10
–0.4
128
256
384
512
640
768
896
1023
–0.20
CODE (Decimal)
0
ILOGIC
250
200
150
100
IDD
50
0
768
896
1023
VDD = ±15V
0.16
0.14
0.12
0.10
0.08
0.06
0.04
ISS
TEMPERATURE (°C)
0
10095-022
10 20 30 40 50 60 70 80 90 100
0
1.5
2.0
2.5
3.0
3.5
DIGITAL INPUT VOLTAGE (V)
700
POTENTIOMETER MODE TEMPCO (ppm/°C)
VDD = 30V
VSS = 0V
600
1.0
4.0
4.5
5.0
Figure 16. Supply Current ILOGIC vs. Digital Input Voltage
Figure 13. Supply Current (IDD, ISS, ILOGIC) vs. Temperature
700
0.5
500
400
300
200
100
VDD = 30V
VSS = 0V
600
500
400
300
200
100
256
512
CODE (Decimal)
768
1023
10095-024
0
0
10095-031
0.02
–50
–40 –30 –20 –10 0
RHEOSTAT MODE TEMPCO (ppm/°C)
640
0.18
300
0
512
0.20
SUPPLY CURRENT I LOGIC (mA)
SUPPLY CURRENT (nA)
350
384
Figure 15. DNL in Normal Mode vs. Code
VDD/VSS = ±15V
VLOGIC = +5V
400
256
CODE (Decimal)
Figure 12. INL in Normal Mode vs. Code
450
128
Figure 14. Rheostat Mode Tempco ΔRWB/ΔT vs. Code
0
256
512
CODE (Decimal)
768
1023
Figure 17. Potentiometer Mode Tempco ΔRWB/ΔT vs. Code
Rev. 0 | Page 10 of 16
10095-023
0
10095-018
–0.8
10095-019
–0.15
–0.6
Data Sheet
AD5292-EP
0
0
–5
0x200
–10
0x100
–10
–20
0x080
–20
PSRR (dB)
GAIN (dB)
–15
0x040
–25
0x020
–30
–30
–40
0x010
–35
–50
0x008
–40
–60
0x004
–50
10
0x001
100
1k
10k
100k
1M
FREQUENCY (Hz)
–70
100
–15
0
VDD/VSS = ±15V
CODE = HALF SCALE
VIN = 1V rms
NOISE BW = 22kHz
1M
VDD/VSS = ±15V,
CODE = HALF SCALE
fIN = 1kHz
NOISE BW = 22kHz
–20
–40
–45
THD + N (dB)
–60
–75
–60
–80
–100
–90
1k
10k
100k
FREQUENCY (Hz)
–140
0.001
10095-027
–120
100
0.1
1
10
AMPLITUDE (V rms)
Figure 22. THD + Noise vs. Amplitude
Figure 19. THD + Noise vs. Frequency
1,000,000
35
0pF
75pF
150pF
250pF
800,000
30
SUPPLY CURRENT I DD (mA)
900,000
700,000
600,000
500,000
400,000
300,000
200,000
25
20
15
10
5
0
0
8
16
32
64
CODE (Decimal)
128
256
512
10095-222
100,000
0
0.01
10095-220
–120
–105
Figure 20. Bandwidth vs. Code vs. Net Capacitance
–5
–0.4
–0.2
0
0.2
0.4
0.6
TIME (ms)
0.8
1.0
Figure 23. IDD Waveform While Blowing/Reading Fuse
Rev. 0 | Page 11 of 16
1.2
10095-034
THD + N (dB)
100k
Figure 21. Power Supply Rejection Ratio vs. Frequency
–30
BANDWIDTH (Hz)
10k
FREQUENCY (Hz)
Figure 18. 20 kΩ Gain vs. Frequency vs. Code
0
1k
10095-026
0x002
10095-025
–45
AD5292-EP
35
Data Sheet
VWB, CODE: FULL SCALE,
NORMAL MODE
30
40
VDD/VSS = 30V/0V
VLOGIC = 5V
VA = VDD
VB = VSS
VDD/VSS = ±15V
VA = VDD
VB = VSS
CODE = HALF CODE
32
24
25
VOLTAGE (μV)
15
10
SYNC
–8
VWB, CODE: HALF-SCALE,
NORMAL MODE
VWB, CODE: HALF-SCALE,
R-PERF MODE
–32
8
–40
–0.5
TIME (µs)
0
Figure 24. Large-Signal Settling Time from Code Zero Scale
8
20
25
TIME (µs)
30
35
40
45
VDD/VSS = ±15V
VLOGIC = +5V
5
4
5
VOLTAGE (V)
4
3
3
2
1
2
0.8
10095-036
8.6
8.0
7.4
6.8
6.2
5.6
5.0
4.4
Figure 28. VEXT_CAP Waveform While Reading Fuse Or Calibration
8
VDD/VSS = ±15V
VLOGIC = +5V
VA = VDD
VB = VSS
1.0
3.8
TIME (ms)
Figure 25. Theoretical Maximum Current vs. Code
1.2
3.2
–1
2.6
1023
2.0
768
1.4
512
CODE (Decimal)
–1.0
256
10095-029
0
0.2
0
1
–0.4
THEORETICAL IWB_MAX (mA)
15
6
6
0
10
Figure 27. Digital Feedthrough
VDD/VSS = 30V/0V
VA = VDD
VB = VSS
7
5
10095-032
15
14
13
12
11
9
10
7
6
5
4
3
2
1
0
–5
–24
10095-033
0
–1
0
–16
5
–2
8
0.8
VOLTAGE (V)
16
VWB, CODE: FULL SCALE,
R-PERF MODE
20
VDD/VSS = ±15V
VLOGIC = +5V
6
VOLTAGE (V)
0.4
0.2
0
3
2
–0.2
–0.4
0
Figure 29. VEXT_CAP Waveform While Writing Fuse
Figure 26. Maximum Transition Glitch
Rev. 0 | Page 12 of 16
10095-037
17.2
16.0
14.8
13.6
12.4
TIME (ms)
11.2
10.0
–2
8.8
16
7.6
14
6.4
12
5.2
10
4.0
6
8
TIME (µs)
2.8
4
1.6
2
0.4
0
–2.0
–0.8
–2
–0.8
–0.6
10095-035
VOLTAGE (V)
0.6
Data Sheet
300
AD5292-EP
80
VDD/VSS = ±15V
VA = VDD
VB = VSS
TEMPERATURE = 25°C
70
250
NUMBER OF CODES
150
100
50
40
30
20
50
10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
0
21
Figure 30. Code Range > 1% R-Tolerance Error vs. Temperature
26
30
VOLTAGE V DD/VSS
Figure 31. Code Range > 1% R-Tolerance Error vs. Voltage
Rev. 0 | Page 13 of 16
33
10095-219
0
–40 –30 –20 –10 0
10
10095-056
NUMBER OF CODES
60
200
AD5292-EP
Data Sheet
TEST CIRCUITS
Figure 32 to Figure 37 define the test conditions used in the Specifications section.
NC
IW
VA
B
V+ ~
VMS
10095-041
A
VIN
W
W
DUT
2.5V
+15V
CODE = 0x00
W
B
+
IWB
A = NC
–
RW =
2
0.1V
VSS TO VDD
–15V
–15V
GND
GND
0.1V
IWB
RWB
VDD
DUT
A
VSS GND
B
ICM
W
+15V
–15V
GND
NC
10095-043
A
VOUT
Figure 36. Gain vs. Frequency
NC
RWB=
OP42
B
OFFSET
GND
Figure 33. Potentiometer Divider Nonlinearity Error
(INL, DNL)
DUT
+15V
A
VMS
∆VMS%
∆VDD%
Figure 35. Power Supply Sensitivity (PSS, PSRR)
V+ = VDD
1LSB = V+/2N
B
PSS (%/%) =
VMS
10095-042
V+
W
10095-047
NC = NO CONNECT
V+ = VDD ± 10%
∆VMS
PSRR (dB) = 20 log ∆V
DD
B
Figure 32. Resistor Position Nonlinearity Error
(Rheostat Operation; R-INL, R-DNL)
DUT
A
10095-044
VDD
+15V
GND
NC = NO CONNECT
–15V
Figure 37. Common-Mode Leakage Current
Figure 34. Wiper Resistance
Rev. 0 | Page 14 of 16
10095-048
DUT
A
W
AD5292-EP
Data Sheet
OUTLINE DIMENSIONS
5.10
5.00
4.90
14
8
4.50
4.40
4.30
6.40
BSC
1
7
PIN 1
0.65 BSC
1.20
MAX
0.15
0.05
COPLANARITY
0.10
0.30
0.19
0.20
0.09
SEATING
PLANE
0.75
0.60
0.45
8°
0°
061908-A
1.05
1.00
0.80
COMPLIANT TO JEDEC STANDARDS MO-153-AB-1
Figure 38. 14-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-14)
Dimensions shown in millimeters
ORDERING GUIDE
Model
AD5292SRU-20-EP
RAB (kΩ)
20
Resolution
1024
Memory
20-TP
Temperature Range
−55°C to +125°C
Rev. 0 | Page 15 of 16
Package Description
14-Lead TSSOP
Package Option
RU-14
AD5292-EP
Data Sheet
NOTES
©2011 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D10095-0-9/11(0)
Rev. 0 | Page 16 of 16