AD7656-1
250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-Bit ADC
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Features
- Pin and software compatible with AD7656 / AD7657 / AD7658 featuring reduced decoupling requirements
- 6 independent ADCs
- True bipolar analog inputs
- Pin-/software-selectable ranges: ±10 V, ±5 V
- Fast throughput rate: 250 kSPS
- iCMOS process technology
- Low power
140 mW at 250 kSPS with 5 V supplies - See Data Sheet for Additional Information
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The AD7656-1 / AD7657-1 / AD7658-1 are reduced decoupling pin- and software-compatible versions of AD7656 / AD7657 / AD7658. The AD7656-1 / AD7657-1 / AD7658-1 devices contain six 16-/ 14-/12-bit, fast, low power successive approximation ADCs in a package designed on the iCMOS® process (industrial CMOS). iCMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. It enables the development of a wide range of high performance analog ICs capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, which dramatically reduces power consumption and package size.
The AD7656-1 / AD7657-1 / AD7658-1 feature throughput rates of up to 250 kSPS. The parts contain low noise, wide bandwidth track-and-hold amplifiers that can handle input frequencies up to 4.5 MHz.
The conversion process and data acquisition are controlled using the CONVST signals and an internal oscillator. Three CONVST pins (CONVST A, CONVST B, and CONVST C) allow independent, simultaneous sampling of the three ADC pairs. The AD7656-1 / AD7657-1 / AD7658-1 have a high speed parallel and serial interface, allowing the devices to interface with microprocessors or DSPs. When the serial interface is selected, each part has a daisy-chain feature that allows multiple ADCs to connect to a single serial interface. The AD7656-1 / AD7657-1 / AD7658-1 can accommodate true bipolar input signals in the ±4 × VREF and ±2 × VREF ranges. Each AD7656-1 / AD7657-1 / AD7658-1 also contains an on-chip 2.5 V reference.
Please visit next generation product AD7606. Recommended for new designs is the AD7656A-1 pin for pin compatible device with improved PSS robustness.
PRODUCT HIGHLIGHTS
- Six 16-/14-/12-bit, 250 kSPS ADCs on board.
- Six true bipolar, high impedance analog inputs.
- High speed parallel and serial interfaces.
- Reduced decoupling requirements and reduced bill of materials cost compared with the AD7656 / AD7657 / AD7658 devices.
APPLICATIONS
- Power line monitoring and measuring systems
- Instrumentation and control systems
- Multiaxis positioning systems
Ask a Question
Submit your question below and we will return the best answer from ADI’s knowledge database:
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Support
Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
Visit the ADI Support Page
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AD7656-1
Documentation
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
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| AD7656BSTZ-1 |
64-Lead LQFP (10mm x 10mm)
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| AD7656BSTZ-1-RL |
64-Lead LQFP (10mm x 10mm)
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| AD7656YSTZ-1 |
64-Lead LQFP (10mm x 10mm)
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- AD7656BSTZ-1
- Pin/Package Drawing
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64-Lead LQFP (10mm x 10mm)
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- AD7656BSTZ-1-RL
- Pin/Package Drawing
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64-Lead LQFP (10mm x 10mm)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD7656YSTZ-1
- Pin/Package Drawing
-
64-Lead LQFP (10mm x 10mm)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
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SamacSys
Filter by Model
Part Models
Product Lifecycle
PCN
Oct 18, 2016
- 16_0034
Assembly Relocation of Select LQFP,LQFP_EP,MQFP,TQFP,TQFP_EP Products to Stats ChipPAC China Jiangyin
AD7656BSTZ-1
PRODUCTION
AD7656BSTZ-1-RL
PRODUCTION
AD7656YSTZ-1
PRODUCTION
Jun 9, 2010
- 10_0147
AD7656, AD7656-1, AD7657-1, AD7658-1 Datasheet FSR definition clarification
AD7656BSTZ-1
PRODUCTION
AD7656BSTZ-1-RL
PRODUCTION
AD7656YSTZ-1
PRODUCTION
Jan 5, 2009
- 07_0077
Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages
AD7656BSTZ-1
PRODUCTION
AD7656BSTZ-1-RL
PRODUCTION
AD7656YSTZ-1
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Oct 18, 2016
- 16_0034
Assembly Relocation of Select LQFP,LQFP_EP,MQFP,TQFP,TQFP_EP Products to Stats ChipPAC China Jiangyin
AD7656BSTZ-1
PRODUCTION
AD7656BSTZ-1-RL
PRODUCTION
AD7656YSTZ-1
PRODUCTION
Jun 9, 2010
- 10_0147
AD7656, AD7656-1, AD7657-1, AD7658-1 Datasheet FSR definition clarification
AD7656BSTZ-1
PRODUCTION
AD7656BSTZ-1-RL
PRODUCTION
AD7656YSTZ-1
PRODUCTION
Jan 5, 2009
- 07_0077
Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages
AD7656BSTZ-1
PRODUCTION
AD7656BSTZ-1-RL
PRODUCTION
AD7656YSTZ-1
PRODUCTION
Software & Part Ecosystem
FPGA/HDL
Device Drivers
Looking for Evaluation Software? You can find it here
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High Voltage Op Amps ≥12V2 |
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Unity-Gain Stable, Ultralow Distortion, 1 nV/√Hz Voltage Noise, High Speed Op Amp |
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Dual High Speed, Low Noise Op Amp |
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Low Input Bias Current Op Amps (≤100 pA)2 |
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PRODUCTION |
Precision, Low Input Bias Current, Wide BW JFET Single Op Amp |
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PRODUCTION |
36 V, 19 MHz, Low Noise, Low Bias Current, JFET Op Amp |
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Multiple Output Buck Regulators1 |
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PRODUCTION |
Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator |
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Positive Linear Regulators (LDO)2 |
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PRODUCTION |
Ultralow Noise, 200 mA, CMOS Linear Regulator |
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PRODUCTION |
Ultra Low Quiescent Current 150 mA, CMOS Linear Regulator |
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Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C)3 |
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PRODUCTION |
Low Noise, High Speed Amplifier for 16-Bit Systems |
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PRODUCTION |
Ultralow Distortion, Ultralow Noise Op Amp (single) |
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PRODUCTION |
Ultralow Distortion, Ultralow Noise Op Amp (Dual) |
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Series Voltage References5 |
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PRODUCTION |
Ultraprecision, Low Noise, 2.500 V XFET® Voltage References |
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PRODUCTION |
Ultralow Noise XFET® Voltage References with Current Sink and Source Capability |
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PRODUCTION |
2.5V Micropower, Precisions Series Mode Voltage References |
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PRODUCTION |
2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown |
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PRODUCTION |
Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source |
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Shunt Voltage References1 |
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PRODUCTION |
2.5 V/3.0 V High Precision Reference |
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| Parts | Product Life Cycle | Description |
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PRODUCTION |
8-Channel DAS with 16-Bit, Bipolar Input, Simultaneous Sampling ADC |
Can't find the software or driver you need?
Request a Driver/SoftwareEvaluation Kits 1
EVAL-AD7656-1
AD7656-1 Evaluation Board
Product Detail
The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.
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