Ultralow Noise
Drivers for Low Voltage ADCs
ADA4930-1-EP
Enhanced Product
APPLICATIONS
ADC drivers
Single-ended-to-differential converters
IF and baseband gain blocks
Differential buffers
Line drivers
14 –VS
13 –VS
12 PD
+IN 2
11 –OUT
–IN 3
10 +OUT
+VS 8
+VS 7
+VS 5
+VS 6
VOCM
10371-001
9
+FB 4
Figure 1.
100
10
1
105°C
25°C
–55°C
0
10
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
Figure 2. Voltage Noise Spectral Density
With the ADA4930-1-EP, differential gain configurations are easily
realized with a simple external feedback network of four resistors
determining the closed-loop gain of the amplifier.
The ADA4930-1-EP is fabricated using Analog Devices, Inc.,
proprietary silicon-germanium (SiGe), complementary bipolar
process, enabling it to achieve very low levels of distortion with
an input voltage noise of only 1.2 nV/√Hz.
GENERAL DESCRIPTION
The ADA4930-1-EP is a very low noise, low distortion, high
speed differential amplifier. It is an ideal choice for driving 1.8 V
high performance ADCs with resolutions up to 14 bits from dc
to 70 MHz. The adjustable output common-mode voltage setting
allows the ADA4930-1-EP to match the input of the ADC for
maximum dynamic range. The internal common-mode feedback
loop provides exceptional output balance, suppression of evenorder harmonic distortion products, and dc level translation.
Rev. A
ADA4930-1-EP
10371-002
Supports defense and aerospace applications (AQEC standard)
Extended temperature range: −55°C to +105°C
Controlled manufacturing baseline
One assembly/test site
One fabrication site
Enhanced product change notification
Qualification data available on request
–FB 1
VN (nV/√Hz)
ENHANCED PRODUCT FEATURES
16 –VS
FUNCTIONAL BLOCK DIAGRAMS
Low input voltage noise: 1.2 nV/√Hz
Low common-mode output: 0.9 V on single supply
Extremely low harmonic distortion
HD2/HD3: −104/−101 dBc at 10 MHz
HD2/HD3: −79/−82 dBc at 70 MHz
HD2/HD3: −73/−75 dBc at 100 MHz
High speed
−3 dB bandwidth: 1.35 GHz, G = 1
Slew rate: 3400 V/µs
0.1 dB gain flatness: 380 MHz
Fast overdrive recovery: 1.5 ns
Offset voltage: 0.5 mV typical
Externally adjustable gain
Differential-to-differential or single-ended-to-differential
operation
Adjustable output common-mode voltage
Single-supply operation: 3.3 V or 5 V
15 –VS
FEATURES
The low dc offset and excellent dynamic performance of the
ADA4930-1-EP make it well suited for a wide variety of data
acquisition and signal processing applications.
The ADA4930-1-EP is available in a 3 mm × 3 mm 16-lead LFCSP.
The pinout has been optimized to facilitate printed circuit board
(PCB) layout and minimize distortion. The ADA4930-1-EP is
specified to operate over the −55°C to +105°C temperature range for
3.3 V or 5 V supply voltages.
Additional application and technical information can be found
in the ADA4930-1/ADA4930-2 data sheet.
Document Feedback
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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.
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Tel: 781.329.4700 ©2012–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
ADA4930-1-EP
Enhanced Product
TABLE OF CONTENTS
Features .............................................................................................. 1
5 V VOCM to VO, cm Performance ...................................................6
Enhanced Product Features ............................................................ 1
5 V General Performance .............................................................6
Applications ....................................................................................... 1
Absolute Maximum Ratings ............................................................7
General Description ......................................................................... 1
Thermal Resistance .......................................................................7
Functional Block Diagrams ............................................................. 1
Maximum Power Dissipation ......................................................7
Revision History ............................................................................... 2
ESD Caution...................................................................................7
Specifications..................................................................................... 3
Pin Configuration and Function Descriptions..............................8
3.3 V Operation ............................................................................ 3
Outline Dimensions ..........................................................................9
3.3 V VOCM to VO, cm Performance ............................................... 4
Ordering Guide .............................................................................9
3.3 V General Performance ......................................................... 4
5 V Operation ............................................................................... 5
REVISION HISTORY
6/13—Rev. 0 to Rev. A
Changes to Ordering Guide ............................................................ 9
10/12—Revision 0: Initial Version
Rev. A | Page 2 of 12
Enhanced Product
ADA4930-1-EP
SPECIFICATIONS
3.3 V OPERATION
VS = 3.3 V, VICM = 0.9 V, VOCM = 0.9 V, RF = 301 Ω, RG = 301 Ω, RL, dm = 1 kΩ, single-ended input, differential output, TA = 25°C, TMIN to
TMAX = −55°C to +105°C, unless otherwise noted.
Table 1.
Parameter
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth
−3 dB Large Signal Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
Overdrive Recovery Time
NOISE/HARMONIC PERFORMANCE
HD2/HD3
Third-Order IMD
Input Voltage Noise
Input Current Noise
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Bias Current Drift
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Common-Mode Voltage Range
Input Resistance
Input Capacitance
CMRR
OUTPUT CHARACTERISTICS
Output Voltage
Linear Output Current
Output Balance Error
Test Conditions/Comments
Min
Typ
Max
Unit
VO, dm = 0.1 V p-p
VO, dm = 2 V p-p
VO, dm = 0.1 V p-p
VO, dm = 2 V step, 25% to 75%
VO, dm = 2 V step, RL = 200 Ω
G = 3, VIN, dm = 0.7 V p-p pulse
1430
887
380
2877
6.3
1.5
MHz
MHz
MHz
V/µs
ns
ns
VO, dm = 2 V p-p, fC = 10 MHz, TMIN to TMAX
VO, dm = 2 V p-p, fC = 30 MHz, TMIN to TMAX
VO, dm = 2 V p-p, fC = 70 MHz, TMIN to TMAX
VO, dm = 2 V p-p, fC = 100 MHz, TMIN to TMAX
VO, dm = 1 V p-p/tone, fC = 70.05 MHz ± 0.05 MHz
VO, dm = 1 V p-p/tone, fC = 140.05 MHz ± 0.05 MHz
f = 100 kHz
TMIN to TMAX
f = 100 kHz
−98/−97
−91/−88
−79/−79
−73/−73
91
86
1.15
1.2
3
dBc
dBc
dBc
dBc
dBc
dBc
nV/√Hz
nV/√Hz
pA/√Hz
VIP = VIN = VOCM = 0 V, RL = open circuit, TMIN to TMAX
TMIN to TMAX
−3.1
−36
TMIN to TMAX
−1.8
RF = RG = 10 kΩ, ∆VO = 0.5 V, RL = open circuit
TMIN to TMAX
−0.5
2.75
−24
−0.05
+0.1
64
61
0.3
Differential
Common mode
Common mode
∆VICM = 0.5 V dc; RF = RG = 10 kΩ, RL = open circuit
TMIN to TMAX
Each single-ended output; RF = RG = 10 kΩ
Each single-ended output; RF = RG = 10 kΩ, TMIN to TMAX
Each single-ended output; f = 1 MHz, THD ≤ 60 dBc
f = 1 MHz
Rev. A | Page 3 of 12
+3.1
−16
+1.8
1.2
150
3
1
−82
−76
0.11
−77
1.74
1.54
30
55
mV
µV/°C
µA
µA/°C
µA
dB
dB
V
kΩ
MΩ
pF
dB
dB
V
V
mA
dB
ADA4930-1-EP
Enhanced Product
3.3 V VOCM TO VO, CM PERFORMANCE
Table 2.
Parameter
VOCM DYNAMIC PERFORMANCE
−3 dB Bandwidth
Slew Rate
VOCM INPUT CHARACTERISTICS
Input Voltage Range
Input Resistance
Input Offset Voltage
Input Voltage Noise
Gain
CMRR
Test Conditions/Comments
Min
VO, cm = 0.1 V p-p
VO, cm = 2 V p-p, 25% to 75%
VOS, cm = VO, cm − VOCM; VIP = VIN = VOCM = 0 V
f = 100 kHz
Typ
Max
745
828
0.8
7.0
−25
0.99
TMIN to TMAX
∆VOCM = 0.5 V dc; RF = RG = 10 kΩ, RL = open circuit
TMIN to TMAX
Unit
MHz
V/μs
1.1
10.3
+31
8.3
+15.4
23.5
1
1.01
−83
−76
1.02
Typ
Max
−77
V
kΩ
mV
nV/√Hz
V/V
V/V
dB
dB
3.3 V GENERAL PERFORMANCE
Table 3.
Parameter
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
+PSRR
−PSRR
POWER-DOWN (PD)
PD Input Voltage
Turn-Off Time
Turn-On Time
PD Pin Bias Current
Enabled
Disabled
Test Conditions/Comments
Min
Enabled
Enabled, TMIN to TMAX variation
Disabled
TMIN to TMAX
ΔVICM = 0.5 V; RF = RG = 10 kΩ, RL = open circuit
TMIN to TMAX
ΔVICM = 0.5 V; RF = RG = 10 kΩ, RL = open circuit
TMIN to TMAX
32
0.44
3.3
35
81
1.8
2.4
−74
−68
−87
−77
40
2.35
−70
−76
Unit
V
mA
μA/C
mA
mA
dB
dB
dB
dB
Disabled
Enabled
<0.8
>1.3
1
12
V
V
μs
ns
PD = 3.3 V
PD = 0 V
0.09
97
μA
μA
OPERATING TEMPERATURE RANGE
−55
Rev. A | Page 4 of 12
+105
°C
Enhanced Product
ADA4930-1-EP
5 V OPERATION
VS = 5 V, VICM = 0.9 V, VOCM = 0.9 V, RF = 301 Ω, RG = 301 Ω, RL, dm = 1 kΩ, single-ended input, differential output, TA= 25°C,
TMIN to TMAX = −55°C to +105°C, unless otherwise noted.
Table 4.
Parameter
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth
−3 dB Large Signal Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
Overdrive Recovery Time
NOISE/HARMONIC PERFORMANCE
HD2/HD3
Third-Order IMD
Input Voltage Noise
Input Current Noise
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Bias Current Drift
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Common-Mode Voltage Range
Input Resistance
Input Capacitance
CMRR
OUTPUT CHARACTERISTICS
Output Voltage
Linear Output Current
Output Balance Error
Test Conditions/Comments
Min
Typ
Max
Unit
VO, dm = 0.1 V p-p
VO, dm = 2 V p-p
VO, dm = 0.1 V p-p
VO, dm = 2 V step, 25% to 75%
VO, dm = 2 V step, RL = 200 Ω
G = 3, VIN, dm = 0.7 V p-p pulse
1350
937
369
3400
6
1.5
MHz
MHz
MHz
V/µs
ns
ns
VO, dm = 2 V p-p, fC = 10 MHz, TMIN to TMAX
VO, dm = 2 V p-p, fC = 30 MHz, TMIN to TMAX
VO, dm = 2 V p-p, fC = 70 MHz, TMIN to TMAX
VO, dm = 2 V p-p, fC = 100 MHz, TMIN to TMAX
VO, dm = 1 V p-p/tone, fC = 70.05 MHz ± 0.05 MHz
VO, dm = 1 V p-p/tone, fC = 140.05 MHz ± 0.05 MHz
f = 100 kHz
TMIN to TMAX
f = 100 kHz
−104/−101
−91/−93
−79/−82
−73/−75
94
90
1.2
1.3
2.8
dB
dBc
dBc
dBc
dBc
dBc
nV/√Hz
nV/√Hz
pA/√Hz
VIP = VIN = VOCM = 0 V, RL = open circuit, TMIN to TMAX
TMIN to TMAX
−3.1
−34
TMIN to TMAX
−0.82
RF = RG = 10 kΩ, ΔVO = 1 V, RL = open circuit
TMIN to TMAX
−0.15
1.8
−23
−0.05
+0.1
64
61
0.3
Differential
Common mode
Common mode
∆VICM = 1 V dc; RF = RG = 10 kΩ, RL = open circuit
TMIN to TMAX
Each single-ended output; RF = RG = 10 kΩ, TMIN to TMAX
Each single-ended output; f = 1 MHz, TDH ≤ 60 dBc
f = 1 MHz
Rev. A | Page 5 of 12
+3.1
−15
+0.82
2.8
150
3
1
−82
−76
0.18
−77
3.38
30
55
mV
µV/°C
µA
µA/°C
µA
dB
dB
V
kΩ
MΩ
pF
dB
dB
V
mA
dB
ADA4930-1-EP
Enhanced Product
5 V VOCM TO VO, CM PERFORMANCE
Table 5.
Parameter
VOCM DYNAMIC PERFORMANCE
−3 dB Bandwidth
Slew Rate
VOCM INPUT CHARACTERISTICS
Input Voltage Range
Input Resistance
Input Offset Voltage
Input Voltage Noise
Gain
CMRR
Test Conditions/Comments
Min
VO, cm = 0.1 V p-p
VO, cm = 2 V p-p, 25% to 75%
VOS, cm = VO, cm − VOCM; VIP = VIN = VOCM = 0 V
f = 100 kHz
Typ
Max
740
1224
0.5
7.0
−25
0.99
TMIN to TMAX
∆VOCM = 1.5 V; RF = RG = 10 kΩ, RL = open circuit
TMIN to TMAX
8.3
+0.35
23.5
1
1
−80
−76
Unit
MHz
V/µs
2.3
10.2
+15
1.02
−77
V
kΩ
mV
nV/√Hz
V/V
V/V
dB
dB
5 V GENERAL PERFORMANCE
Table 6.
Parameter
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
+PSRR
−PSRR
POWER-DOWN (PD)
PD Input Voltage
Turn-Off Time
Turn-On Time
PD Pin Bias Current
Enabled
Disabled
Test Conditions/Comments
Min
Enabled
Enabled, TMIN to TMAX variation
Disabled
TMIN to TMAX
ΔVICM = 1 V; RF = RG = 10 kΩ, RL = open circuit
TMIN to TMAX
ΔVICM = 1 V; RF = RG = 10 kΩ, RL = open circuit
TMIN to TMAX
31.1
0.45
Typ
5
34
74.5
1.8
2.7
−74
−70
−91
−78
Max
38.4
2.6
−71
−75
Unit
V
mA
µA/°C
mA
mA
dB
dB
dB
dB
Disabled
Enabled
<2.5
>3
1
12
V
V
µs
ns
PD = 5 V
PD = 0 V
0.09
97
µA
µA
OPERATING TEMPERATURE RANGE
−55
Rev. A | Page 6 of 12
+105
°C
Enhanced Product
ADA4930-1-EP
ABSOLUTE MAXIMUM RATINGS
Rating
5.5 V
See Figure 3
−65°C to +125°C
−55°C to +105°C
300°C
150°C
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 specified for the device (including exposed pad) soldered
to a high thermal conductivity 2s2p circuit board, as described
in EIA/JESD51-7.The θJA for the 16-Lead LFCSP(exposed pad)
package is 81.6 °C/W.
MAXIMUM POWER DISSIPATION
The maximum safe power dissipation in the ADA4930-1-EP package
is limited by the associated rise in junction temperature (TJ) on the
die. At approximately 150°C, which is the glass transition
temperature, the plastic changes its properties. Even temporarily
exceeding this temperature limit can change the stresses that the
package exerts on the die, permanently shifting the parametric
performance of the ADA4930-1-EP. Exceeding a junction
temperature of 150°C for an extended period can result in
changes in the silicon devices, potentially causing failure.
Airflow increases heat dissipation, effectively reducing θJA. In
addition, more metal directly in contact with the package leads/
exposed pad from metal traces, through holes, ground, and
power planes reduces θJA.
Figure 3 shows the maximum safe power dissipation vs. the
ambient temperature for the ADA4930-1-EP single 16-lead
LFCSP (81.6°C/W) on a JEDEC standard 4-layer board.
3.0
TJ = 150°C
2.5
2.0
16-LEAD LFCSP
1.5
1.0
0.5
0.0
–55
–35
–15
5
25
45
65
85
105
AMBIENT TEMPERATURE (°C)
Figure 3. Maximum Power Dissipation vs. Ambient Temperature,
4-Layer Board
ESD CAUTION
Rev. A | Page 7 of 12
10371-004
Parameter
Supply Voltage
Power Dissipation
Storage Temperature Range
Operating Temperature Range
Lead Temperature (Soldering, 10 sec)
Junction Temperature
The power dissipated in the package (PD) is the sum of the
quiescent power dissipation and the power dissipated in the
package due to the load drive. The quiescent power is the voltage
between the supply pins (VS) times the quiescent current (IS).
The power dissipated due to the load drive depends on the
particular application. The power due to load drive is calculated
by multiplying the load current by the associated voltage drop
across the device. RMS voltages and currents must be used in
these calculations.
MAXIMUM POWER DISSIPATION (W)
Table 7.
ADA4930-1-EP
Enhanced Product
13 –VS
14 –VS
15 –VS
16 –VS
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
12 PD
–FB 1
11 +OUT
ADA4930-1-EP
TOP VIEW
(Not to Scale)
–IN 3
10 –OUT
+FB 4
VOCM
+VS 8
+VS 7
+VS 6
+VS 5
9
NOTES
1. EXPOSED PADDLE. THE EXPOSED PAD IS NOT
ELECTRICALLY CONNECTED TO THE DEVICE. IT IS
TYPICALLY SOLDERED TO GROUND OR A POWER
PLANE ON THE PCB THAT IS THERMALLY CONDUCTIVE.
10371-005
+IN 2
Figure 4. Pin Configuration
Table 8. Pin Function Descriptions
Pin No.
1
2
3
4
5 to 8
9
10
11
12
13 to 16
Mnemonic
−FB
+IN
−IN
+FB
+VS
VOCM
+OUT
−OUT
PD
−VS
EPAD
Description
Negative Output for Feedback Component Connection.
Positive Input Summing Node.
Negative Input Summing Node.
Positive Output for Feedback Component Connection.
Positive Supply Voltage.
Output Common-Mode Voltage.
Positive Output for Load Connection.
Negative Output for Load Connection.
Power-Down Pin.
Negative Supply Voltage.
Exposed Paddle. The exposed pad is not electrically connected to the device. It is typically
soldered to ground or a power plane on the PCB that is thermally conductive.
Rev. A | Page 8 of 12
Enhanced Product
ADA4930-1-EP
OUTLINE DIMENSIONS
0.30
0.23
0.18
0.50
BSC
13
PIN 1
INDICATOR
16
1
12
EXPOSED
PAD
1.45
1.30 SQ
1.15
4
9
TOP VIEW
0.80
0.75
0.70
0.50
0.40
0.30
8
0.25 MIN
BOTTOM VIEW
0.05 MAX
0.02 NOM
COPLANARITY
0.08
0.20 REF
SEATING
PLANE
5
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
SECTION OF THIS DATA SHEET.
COMPLIANT TO JEDEC STANDARDS MO-220-WEED.
111808-A
PIN 1
INDICATOR
3.10
3.00 SQ
2.90
Figure 5. 16-Lead Lead Frame Chip Scale Package [LFCSP_WQ]
3 mm × 3 mm Body, Very Very Thin Quad
(CP-16-21)
Dimensions shown in millimeters
ORDERING GUIDE
Model 1
ADA4930-1SCPZ-EPR2
ADA4930-1SCPZ-EPR7
ADA4930-1SCPZ-EPRL
1
Temperature Range
−55°C to +105°C
−55°C to +105°C
−55°C to +105°C
Package Description
16-Lead LFCSP_WQ
16-Lead LFCSP_WQ
16-Lead LFCSP_WQ
Z = RoHS Compliant Part.
Rev. A | Page 9 of 12
Package Option
CP-16-21
CP-16-21
CP-16-21
Ordering Quantity
250
1,500
5,000
Branding
H2X
H2X
H2X
ADA4930-1-EP
Enhanced Product
NOTES
Rev. A | Page 10 of 12
Enhanced Product
ADA4930-1-EP
NOTES
Rev. A | Page 11 of 12
ADA4930-1-EP
Enhanced Product
NOTES
©2012–2013 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D10371-0-6/13(A)
Rev. A | Page 12 of 12