AD7657-1
PRODUCTION250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 14-Bit ADC
- Part Models
- 4
- 1ku List Price
- Starting From $12.48
Part Details
- 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
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.
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
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 1
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 |
|---|---|---|---|
| AD7657BSTZ-1 | 64-Lead LQFP (10mm x 10mm) | ||
| AD7657BSTZ-1-RL | 64-Lead LQFP (10mm x 10mm) | ||
| AD7657YSTZ-1 | 64-Lead LQFP (10mm x 10mm) | ||
| AD7657YSTZ-1-RL | 64-Lead LQFP (10mm x 10mm) |
| 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 |
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| AD7657BSTZ-1 | PRODUCTION | |
| AD7657BSTZ-1-RL | PRODUCTION | |
| AD7657YSTZ-1 | PRODUCTION | |
| AD7657YSTZ-1-RL | PRODUCTION | |
|
Jun 9, 2010 - 10_0147 AD7656, AD7656-1, AD7657-1, AD7658-1 Datasheet FSR definition clarification |
||
| AD7657BSTZ-1 | PRODUCTION | |
| AD7657BSTZ-1-RL | PRODUCTION | |
| AD7657YSTZ-1 | PRODUCTION | |
| AD7657YSTZ-1-RL | PRODUCTION | |
|
Jan 5, 2009 - 07_0077 Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages |
||
| AD7657BSTZ-1 | PRODUCTION | |
| AD7657BSTZ-1-RL | PRODUCTION | |
| AD7657YSTZ-1 | PRODUCTION | |
| AD7657YSTZ-1-RL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 0
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| High Speed Op Amps (Bandwidth ≥ 50MHz) 1 | ||
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| High Voltage Op Amps ≥12V 1 | ||
| ADA4899-1 | PRODUCTION | Unity-Gain Stable, Ultralow Distortion, 1 nV/√Hz Voltage Noise, High Speed Op Amp |
| Low Power Op Amps (≤ 1mA/amp) 1 | ||
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| Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C) 4 | ||
| ADA4898-1 | PRODUCTION | High Voltage, Low Noise, Low Distortion, Unity Gain Stable, High Speed Op Amp |
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| ADA4841-1 | PRODUCTION | Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier |
| AD8597 | PRODUCTION | Ultralow Distortion, Ultralow Noise Op Amp (single) |
| Series Voltage References 5 | ||
| ADR431 | PRODUCTION | Ultralow Noise XFET® Voltage References with Current Sink and Source Capability |
| REF192 | PRODUCTION | 2.5V Precision Micropower, Low Dropout, Low Voltage Reference |
| AD1582 | PRODUCTION | 2.5V Micropower, Precisions Series Mode Voltage References |
| ADR391 | PRODUCTION | 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown |
| ADR441 | PRODUCTION | Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source |
| Shunt Voltage References 1 | ||
| AD780 | PRODUCTION | 2.5 V/3.0 V High Precision Reference |
Evaluation Kits
AD7657-1 Evaluation Kit