AD7686 Datasheet PDF – 16-Bit, 500 kSPS, PulSAR ADC

Part Number: AD7686

Function: 16-Bit, 500 kSPS, PulSAR ADC

Package: 10-lead MSOP or a 10-lead QFN (LFCSP) Type

Manufacturer: Analog Devices


AD7686 datasheet



The AD7686 is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, the AD7686 samples an analog input IN+ between 0 V to REF with respect to a ground sense IN−. The reference voltage, REF, is applied externally and can be set up to the supply voltage. Power dissipation 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 or provides an optional busy indicator. This device is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO. The AD7686 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.

Features L

1. 16-bit resolution with no missing codes

2. Throughput: 500 kSPS

3. INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR)
(1) SINAD: 92.5 dB @ 20 kHz
(2) THD: −110 dB @ 20 kHz

4. Pseudo differential analog input range : 0 V to VREFwith VREFup to VDD

5. No pipeline delay

6. Single-supply 5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface

7. Serial interface SPI- / QSPI- / MICROWIRE- / DSP-compatible

8. Daisy-chain multiple ADCs and busy indicator

9. Power dissipation
(1) 3.75 μW @ 5 V/100 SPS
(2) 3.75 mW @ 5 V/100 kSPS

10. Standby current : 1 nA

11. Pin-for-pin-compatible with 10-lead MSOP / QFN PulSAR ADCs


1. Battery-powered equipment
2. Data acquisitions
3. Instrumentation
4. Medical instruments
5. Process controls

Other data sheets are available within the file:


AD7686 Datasheet PDF Download

AD7686 pdf