AD7691 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7691
Manufacturer

ADI
ChipWorker Part#

CW320642658
Description

Dual Differential 16Bit, 1MSPS PulSAR ADC 12mW in QSOP
Documentation

Datasheet

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AD7691 Specifications

Attribute	Attribute Value

Part Number	AD7691
Manufacturer	ADI
ChipWorker Part#	CW320642658
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD7691 is an 18-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.3 V and 5 V. It contains a low power, high speed, 18-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. On the CNV rising edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins usually swing in opposite phase between 0 V and REF. The reference voltage, REF, is applied externally and can be set up to the supply voltage.
The part’s power scales linearly with throughput.
The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.
The AD7691 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.
**Applications**
Battery-powered equipment
Data acquisitions
Seismic data acquisition systems
Instrumentation
Medical instruments
### Features and Benefits
18-bit resolution with no missing codes
Throughput: 250 kSPS
INL: ±0.75 LSB typical, ±1.5 LSB maximum (±6 ppm of FSR)
Dynamic range: 102 dB typical at 250 kSPS
Oversampled dynamic range: 125 dB at1 kSPS
Noise-free code resolution: 20 bits at 1 kSPS
Effective resolution: 22.7 bits at 1 kSPS
See data sheet for additional features
AD7691-EP supports defense and aerospace applications (AQEC standard)
Download AD7691-EP data sheet (pdf)
Military 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
V62/14632-01XE DSCC Drawing Number

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Ordering Information

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- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
- Income quality control (IQC), 800+ qualified distributors.
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- Decapsulation control
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- Electrical testing
- Surface testing

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