AD7683 ANALOG DEVICES Data Manual

16-Bit, 100 k SPS, Single-Ended Pul SAR ADC in MSOP/QFN

AD7683 FEATURES APPLICATION DIAGRAM

0.5V TO VDD 2.7V TO 5.5V

16-bit resolution with no missing codes Throughput: 100 k SPS INL: ±1 LSB typical, ±3 LSB maximum

REF VDD

0V TO VREF

Pseudo differential analog input range

+IN DCLOCK

0 V to VREF with VREF up to VDD 3-WIRE SPI

–IN AD7683 DOUT

INTERFACE

Single-supply operation: 2.7 V to 5.5 V CS

Serial interface SPI/QSPI/MICROWIRE/DSP compatible Power dissipation: 4 m W @ 5 V, 1.5 m W @ 2.7 V,

Figure 1.

150 μW @ 2.7 V/10 k SPS Standby current: 1 n A 8-lead packages:

Table 1. MSOP, QFN (LFCSP)/SOT-23, 14-/16-/18-Bit

Pul SAR ADC

3 mm × 3 mm QFN (LFCSP) (SOT-23 size)

400 k SPS

Improved second source to ADS8320 and ADS8325

to ≥1000 ADC

Type k SPS k SPS 500 k SPS k SPS Driver

18-Bit True AD7691 AD7690 AD7982 ADA4941

APPLICATIONS

Differential AD7984 ADA4841

Battery-powered equipment 16-Bit True AD7684 AD7687 AD7688 ADA4941

Data acquisition Differential AD7693 ADA4841 16-Bit Pseudo AD7680 AD7686 AD7685 AD7980 ADA4841

Instrumentation

Differential AD7683 AD7694

Medical instruments

14-Bit Pseudo AD7940 AD7942 AD7946 ADA4841

Process control www.BDTIC.com/ADI

Differential

GENERAL DESCRIPTION

track-and-hold circuit. On the CS falling edge, it samples an

The AD7683 is a 16-bit, charge redistribution, successive

analog input, +IN, between 0 V to REF with respect to a ground

approximation, Pul SAR® analog-to-digital converter (ADC)

sense, –IN. The reference voltage, REF, is applied externally and

that operates from a single power supply, VDD, between 2.7 V

can be set up to the supply voltage. Its power scales linearly with

and 5.5 V. It contains a low power, high speed, 16-bit sampling

throughput.

ADC with no missing codes (B grade), an internal conversion

The AD7683 is housed in an 8-lead MSOP or an 8-lead QFN

clock, and a serial, SPI-compatible interface port. The part also

(LFCSP) package, with an operating temperature specified from

contains a low noise, wide bandwidth, short aperture delay,

−40°C to +85°C.

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