TEST AND
MEASUREMENT
EQUIPMENT SOLUTIONS
SIMPLY SMARTER™
Test and Measurement Solutions
Introduction
• Q2 SOQ for test and measurement solutions
from Intersil
Purpose
• Introduce Intersil solutions for test and
measurement equipment
Objectives
• Overview of several sub-blocks of test and
measurement
• Present Intersil feature products with select
application circuits
Content
• 19 Pages
Learning time
• 30-40 minutes
2
Instrumentation
Instrumentation Basics
Primarily digitizing systems
High degree of similarity in signal chains
Each application may have one or two unique or critical differentiators.
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Signal Chain
Amplifier + Filter + ADC, followed by an FPGA
DCPs used to trim and calibrate channel gain, offset.
Typically, signal chain components are chosen such that the ADC is the
performance limit for resolution/dynamic range & linearity.
Input signals can be AC or DC coupled – may impact amplifier choice.
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Data
Acquisition
USB Scope
Spectrum
Analyzer
Digital
Multimeter
FDA
Typically require lower noise and better linearity than ADC
Can be used to perform single-ended to differential conversion
General Receiver Chain application – Differential I/O gain block
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ADC
Sample rate sets the analysis bandwidth.
Resolution (SNR/ENOB) sets the dynamic range.
Linearity (SFDR) is important when large and small-scale signals
present simultaneously.
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Products Highlighted:
• High speed data converters
• Fully-differential amps (FDAs)
• Digital potentiometers (DCPs)
• Precision amps
• Precision voltage references
• Current sense amps
Power
• Low dropout regulators (LDOs)
• Multi output voltage solutions for powering FPGAs
• LDOs for low noise, low EMI
• Synchronous buck regulators
3
• Voltage supervisors
Data Acquisition
Data Acquisition Basics
General purpose digitizing systems – broad set
of end uses
High segmentation - numerous sample-rate,
resolution, channel-count combinations
Performance of signal chain – linearity and
dynamic range -- is usually critical.
Size and power can often be differentiators.
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Signal Chain Selection
Best-in-class linearity and dynamic range
(ISL55210/1, ISLA112P50, ISLA214P50)
Multi-channel support (ISL224x4, ISLA112P50,
ISLA214P50, ISLA216P25, ISLA224P25)
Max (sample rate, resolution) usually a strong
selling point (ISLA216P25, ISLA214P50)
Pin-compatibility across sample-rate/resolution
allows design re-use and speeds time-to-market
(ISLA214P50, ISLA216P25)
Temperature stability for accurate signal
conditioning (gain/phase/offset/filter cutoff)
(ISLA224x4)
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Category
Product
Description
DC/DC
ISL9440
ISL85033
Triple Synchronous Buck PWM Controller
Dual Standard Buck Regulator
LDO
ISL80102
High Performance, 2A LDO
DCP
ISL224x4
Single, Dual, or Quad 256-tap SPI DCP
FDA
ISL55210
ISL55211
Low-Power Differential Amplifier
Fixed-Gain, Low Power Differential Amplifier
ADC
ISLA216P25
ISLA214P50
ISLA112P50
ISLA224P25
16-Bit, 250 MSPS ADC
14-Bit, 500 MSPS ADC
12-Bit, 500 MSPS ADC
Dual 14-Bit, 250 MSPS ADC
Power
• Multi output voltage solutions for powering
Processors or FPGA
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4
ISL9440B Triple output controller and single
LDO controller generates the rails for a FPGA.
ISL80101 LDO family can reduce EMI in noise
sensitive areas.
USB Scope
USB Scope Basics
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Wall powered – see data acquisition
USB powered – power consumption limited by
USB power budget
Power – Highest performance, maximum
functionality that fit within power budget
Good DNL required for time-domain display
Good noise and linearity for frequency-domain
display
Signal Chain Selection
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Ultra-low power & high performance
(ISL55210/1, ISLA110P50, ISLA118P50)
Multi-channel support (ISL22xx4, ISLA110P50,
ISLA118P50)
Digital Gain – Use higher resolution ADC to
enable software gain (ISLA112P50)
Temperature stability for accurate signal
conditioning (gain/phase/offset/filter cutoff)
(ISLA224x4)
Power
• Efficiency and size are the main focus.
– ISL9440B, ISL9104, ISL8033 are some of
the products that can power the FPGA and
also work well to generate the power to the
amplifiers in the system.
• 5 Current-limit protection for USB port (ISL80101A)
Category
Product(s)
Description
Supervisor
ISL88011
5 Ld Voltage Supervisor
ADC
ISLA118P50
ISLA110P50
ISLA112P50
Low Power 8-Bit, 500MSPS ADC
Low Power 10-Bit, 500MSPS ADC
Low Power 12-Bit, 500MSPS ADC
DC/DC
ISL8012
ISL8014A
ISL8500
ISL9104
High Efficiency, 2A Synchronous, Step-down Conv
High Efficiency, 4A Synchronous, Step-down Conv
Standard Buck PWM Regulator
500mA, 4.3MHz Step-down Regulator
LDO
ISL80101/3
ISL9000
High Performance, 1A LDO/3A LDO
High Performance, Dual 300mA LDO
MUX
ISL59421
865MHz Bandwidth Multiplexing Amplifier
DCP
ISL223x3
ISL224x4
Single, Dual, or Quad 256-tap, I2C DCP
Single, Dual, or Quad 256-tap SPI DCP
VREF
ISL60002
Precision, Ultra-low Power Vref
AMP
EL5166
ISL28138
1.4GHz Current Feedback Amplifier
4.5MHz Single RRIO Op-Amp
FDA
ISL55210
ISL55211
Low-Power Differential Amplifier
Fixed-Gain, Low Power Differential Amplifier
Spectrum Analyzer
Spectrum Analyzer basics
Primarily frequency domain analysis
Performance of signal chain – linearity and
noise -- is usually critical.
Power consumption not an issue unless it is
handheld.
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Signal Chain Selection
Best-in-class linearity and noise performance
(ISL55210/1, ISLA216P25, ISLA214P50,
ISLA214P25)
Maximum analysis bandwidth & high dynamic
range (ISLA214P50, ISLA216P25)
High accuracy signal conditioning
(gain/phase/offset/filter cutoff) (ISLA223x4)
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Power
• Multi output voltage solutions for powering
Processors or FPGA
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–
6
ISL9440B Triple output controller and single
LDO controller generates the rails for a FPGA.
ISL80101 LDO family can reduce EMI in noise
sensitive areas.
Category
Products
Description
DC/DC
ISL8016
ISL6124
ISL8112
Synchronous Buck Regulator
Integrated 4-channel Power Sequencing Cntrl
Dual Output Synchronous Buck Controller
LDO
ISL80101/2/3
ISL9008A
Adjustable Current Limit, 1A/2A/3A LDO
High Performance, 150mA LDO
DCP
ISL22313/23/43
Single, Dual, and Quad 256-tap, I2C DCP
FDA
ISL55210
ISL55211
Low-Power Differential Amplifier
Fixed-Gain, Low Power Differential Amplifier
ADC
ISLA216P25
ISLA214P50
ISLA214P25
16-Bit, 250 MSPS ADC
14-Bit, 500 MSPS ADC
14-Bit, 250 MSPS ADC
Digital Multimeter
Digital Multimeter basics
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Analog Front-End - Signal conditioning
subsystem which amplifies or attenuates the
analog signal (AC volts, DC volts, current, or
resistance).
Control and Data Processing - Executes
measuring processes and controls interface with
memory and peripheral devices.
Memory/Peripheral Devices - Measurement
results are stored in EEPROM or FLASH memory
as a data log that can be uploaded to a PC via
USB interface.
Power Management and Conversion - converts
the input battery power to run various functional
blocks.
Signal Chain Selection
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Best in Class – High Impedance (JFET) Amplifier
(ISL28110/210)
Low Side Current Sense – (ISL28108/208,
ISl28118/218)
Micro-Power Voltage References (Precision
ISL21007/09/60, Low Cost ISL21070/80)
Category
Product(s)
Description
Amplifier
ISL28110/210
ISL28118/218
ISL28108/208
ISL28107/207
ISL28117/217
ISL28127/227
ISL28133/233/433
Single/Dual, Low Noise JFET Op-Amp
Single/Dual,40V SS, RRO Op-Amp
Single/Dual,40V Low Power SS RRO Op-Amp
Single/Dual, Low Power Op-Amp
Single/Dual, Low Power/Low Noise Op-Amp
Single/Dual, Low Noise Op-Amp
Single/Dual/Quad, MicroPower Chopper Op-Amp
Current
Sense
Amplifier
ISL28005/6
ISL28118/218
ISL28108/208
ISL28133/233/433
MicroPower, High/Low-Side Current Sense Amp
Single/Dual, 40V SS, RRO Op-Amp (Low Side)
Single/Dual, 40V Low Power SS RRO Op-Amp
Single/Dual/Quad, MicroPower Op-Amp
VREF
ISL21009
ISL21007
ISL21060
ISL21070
ISL21080
3ppm/°C, Low Noise, Low Power Reference
3ppm/°C Low Voltage, Low Noise, Low Pwr Ref
10ppm/°C Precision, Low Pwr Reference wi/SD
Low Cost, 25µA Reference
Low Cost, 1.5µA Reference
Power
ISL9305H
ISL9003A
Dual High Fsw Buck + Dual LDO
Low Noise LDO with Low IQ and High PSRR
Power
• Efficiency and size are the main focus.
(ISL9305H, ISL9003A)
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Featured Products
SIMPLY SMARTER™
ISLA214P50 & ISLA216P25: Industry’s Fastest
14/16-Bit ADCs
Device
Resolution Sample Rate
(Bits)
(MSPS)
ISLA214P50
14
500
ISLA216P25
16
250
SNR
(dBFS)
72.7
75.0
SFDR
(dBc)
84
87
ENOB
(bits)
11.7
12.1
ISLA214P50 & ISLA216P25
SNR (dBFS)
• Best-in-Class SNR & Power
– Maximizes dynamic range at high sample rates
– Minimizes power consumption and heat generation,
simplifying thermal and power system design, and
enabling smaller, more compact systems
– Allows both ADCs to use the same PCB, enabling designreuse for increased product versatility and reduced costs
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ISLA214P50
400MSPS
ISLA214P50
500MSPS
Nearest Comp
400MSPS
200
400
600
Input Frequency (MHz)
Power Comparison
3000
2500
Power (mW)
• Pin-compatibility
76
75
74
73
72
71
70
69
68
67
66
0
• Packed with Multi-Channel Support Features
– Simplifies design of interleaved and multi-channel
systems, reducing cost and time to market
Power
(mW)
835
786
SNR vs. Input Frequency
• Highest Sample Rate available for 14 & 16-bit ADCs
– Maximizes analysis bandwidth enabling faster spectral
sweeps and simplified tuning requirements
IMD
(dBFS)
88
94
2000
1500
1000
500
0
ISLA214P50
Nearest Competitor
ISLA11xP50: Industry’s Best Low-Power 500MSPS ADCs
Device
ISLA112P50
ISLA110P50
ISLA118P50
Resolution
(Bits)
12
10
8
Sample Rate
(MSPS)
500
500
500
SNR
(dBFS)
65.9
60.7
49.9
ISLA112P50, ISLA110P50, ISLA118P50
• Highest Dynamic Range available for 8, 10 & 12-bit,
500MSPS ADCs
– Maximizes sensitivity of data acquisition and USB scopes
• Best-in-Class SNR / Power Combination
– Maximizes dynamic range within limited power budget
•
High resolution enables additional processing functionality (digital
gain, high fidelity ffts)
– Maximizes number of channels supportable at required
resolution (usually 8 to 10-Bits)
• Packed with Multi-Channel Support Features
– Simplifies design of interleaved and multi-channel systems,
reducing cost and time to market.
• Pin-compatibility
– Allows both ADCs to use the same PCB, enabling design-reuse
for increased product versatility and reduced costs
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SFDR
(dBc)
86
86
68
ENOB
(bits)
10.7
9.8
8.0
Power
(mW)
455
441
428
ISL55210: Wideband, Low-Power, Ultra-High
Dynamic Range Differential Amplifier
• Key Performance Specs:
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4.0 GHz Gain Bandwidth Product
Ultra-fast Slew Rate (5600 V/us)
Ultra-low distortion (-109dBc at 100MHz)
Lowest Input Noise (0.85nV/√Hz)
Exceptionally low power (115mW)
• Benefits for Instrumentation
 4.0GHz GBWP can accommodate high frequencies of
interest
 Fast slew rate does not distort the signal
 Minimal performance degradation of ADCs up to 16-bit
resolution
• Fixed Gain ISL55211 also
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ISL223x3/4x4: Single, Dual, and Quad 256-Tap DCP
Part Number Decoder
Package
• ISL223X3– I2C Interface
• Single: MSOP-10
• ISL224X4– SPI Serial Interface
• Dual: TSSOP-14 & 16 LD QFN
• X=1,2,4 (Single, Dual, Quad respectively)
• Quad: TSSOP-20 & 20 LD QFN
Key Specifications
• Non Volatile, 256-Tap DCP
• Terminal Voltage Range = -5.5V to 5.5V
• Temp Coefficient = +50 ppm/oC (end to end)
+4 ppm/oC (ratiometric)
• Operating Temp = -40oC to 125oC
Features
• Total Resistance = 10kΩ, 50kΩ, 100kΩ
• SPI Parts Have Daisy Chain Capability
N DCPs in a Chain
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Current Sensing with Digital Gain &
Offset Control
ISL28x33: MicroPower Op Amp
ISL28133/233/433 - MicroPower
Chopper Stabilized RRIO Op Amp
Features:
• Very low offset voltage and low offset voltage drift
for accuracy
• Rail-to-Rail Input/Output for both high side and low
side current sense application
VOS (max)
6µV
TCVOS
(max)
IB (max)
0.05µV/°C
180pA
en
GBW
IS
(max)
VS
Temp Range
ESD
(HBM)
400kHz
25µA
1.65V to 6V
-40°C to 125°C
4kV
@ 1kHz
65nV/√Hz
ISL28133 (Single)
ISL28233 (Dual)
ISL28433 (Quad)
Package: SC70-5, SOT23-5, µTDFN-8
Price: $0.99 @ 1ku
Package: SOIC-8, MSOP-8, TDFN-8
Price: $1.45 @ 1ku
Package: SOIC-14, TSSOP-14,
Price: $2.66 @ 1ku
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ISL60002: Industry’s Lowest Power Vref
FGA™ voltage references are extremely low power
and fabricated on Intersil’s proprietary Floating Gate
Analog technology.
• Nano Power: 700nA max*
• Low Noise: 30µVpp (0.1Hz to 10Hz)
• Voltage Outputs: 1.024V, 1.2V, 1.25V, 1.8V, 2.048V,
2.5V, 2.6V, 3V, 3.3V
• Iout: 7mA (Source) / 20mA (Sink)*
• Operating Voltage: 2.7V* to 5.5V
• Wide Operating Temperature: -40°C to +105°C*
• Industry Standard Package: 3 lead SOT23
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Grade
Initial Accuracy
Tempco
Price @ 1ku
ESD (HBM)
B – Grade
1.0 mV
20 ppm/°C
$2.25
5.5kV
C – Grade
2.5 mV
20 ppm/°C
$1.45
5.5kV
D – Grade
5.0 mV
20 ppm/°C
$0.95
5.5kV
ISL28005/6: MicroPower Current Sense Amplifier
ISL28005/6 – MicroPower High/Low
Side Current Sense Amplifier
Part Number
Supply Voltage (V)
Input Common
Mode Range (V)
Vos Max @ 25°C
Vos Max Temp
CMRR min Temp
PSRR min Temp
Gain Range
Gain Accuracy @
25°C
Gain Accuracy
Temp
Is Max @ 25°C
Is Max Temp
GBW
Temp
Range
Package
15
Price @ 1kpcs
Min
Max
Min
Max
µV
µV
dB
dB
V/V
ISL28005
2.7
28
0
28
500
500
105
90
ISL28006
2.7
28
0
28
250
300
105
90
20, 50, 100,
Adj (2020, 50, 100
100)
(%)
2
0.7
(%)
µA
µA
kHz
3
59
59
180
1
62
62
180
°C
-40 to 125 -40 to 125
SOT23
SOT23
$0.75
$0.99
Very High Accuracy
Across Vcm Range
Excellent for low
ohmic measurements!
-Parallel Input Stages enable Very High
Accuracy across entire Vcm Range.
-Hysteretic Comparator controls operation
-Gain Error driven by Amplifier offset error
matching and Rs Kelvin errors
ISL80101A: LDO with adjustable current limit for
USB port protection
The current limit threshold of ISL80101A adjusted
through a resister (Rset)
ISL80101A Key Features
• Designed for accurate current limiting
(+/- 10% typ)
• Soft-start limits the inrush current
during start-up
• Input Voltage Range: 2.2V to 6V
• Tight ±1.8% VOUT accuracy over 40ºC<TJ<125ºC
• Very fast load transient response,
excellent AC accuracy
• Less than 1µA shutdown current (typ)
• PGOOD, Enable, Short-Circuit &
Reverse Current Protection, & OverTemperature Shutdown Capability
• Space saving 10-Ld 3x3 DFN package
Can also be used to protect Fire Wire and other ports.
16
ISL9305: Dual High Fsw Buck + Dual LDO
Description
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•
•
•
Dual High Fsw Buck + Dual Low VIN LDO
3MHz fixed switching frequency
Dual 800mA or 1.5A(H version) output current
for the buck regulators
300mA output current for the LDOs
Features
•
•
Applications
•
Ideal for handheld Instrumentation as it
provides system power in one chip
•
•
17
3MHz Fsw on bucks reduces size & BOM cost.
I2C Interface control:
• Output Voltage selection on all 4 channels
• Voltage stepping in 50mV steps for
buck regulators
• 100mV steps for LDOs
• Power Up/Down sequencing on all 4
channels
• DCDCs In/Out Phase mode
• PFM Ultrasonic Mode Selection
• Programmable Slew rate control
QFN Versions Released
CSP Versions to Release 05/11
ISL8016: High Efficiency 6A Int. FET Buck Regulator
Description
• Input Supply Voltage Range
– 2.7V to 5.5V
• Output Voltage Range
The big selling point for this part is the high efficiency over
the full current range and size of the solution.
This is best in class!
– 0.8V to Vin
• 6A Guaranteed O/P Current
• Package – 20 Ld. 3x4 QFN
Features
• Programmable Current Limit
• Selectable Forced PWM and PFM Mode (Power Save
Mode)
• Output Current Sharing Capability (multiple ICs)
• Adj. Fsw – 500kHz to 4Mhz & Fixed 1MHz default
• Synchronization to External Clock – Up to 4MHz
• +/-10% Voltage Margining
• EN and PGOOD
• Internal Current Mode Compensation (for default Fsw)
• SYNC IN and SYNC OUT
• Adj. Soft-Start
• Start-up in Pre-biased Load
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