Analog Devices Inc. AD7693BRMZ

Description
The AD7693 is a 16-bit, successive approximation analog-to-digital converter (ADC) that operates from a single 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 reference voltage, Vies, is applied externally and can be set up to the supply voltage, VDD. On the CNV rising edge, it samples the voltage difference between the IN and IN- pins. The voltages on these pins swing in opposite phase between 0 V and Vas about Vau/2. Its power scales linearly with throughput.
Using the SDI input, the SPI-compatible serial interface also features the ability 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 AD7693 is housed in a 10-lead MSOP or a 10-lead LFCSP with operation specified from -40°C to 85°C.

Features
16-bit resolution with no missing codes
Throughput: 500 KSPS
INL/DNL: ±0.25 LSB typ, ±0.5 LSB max ( 8 ppm of FSR)
Dynamic range: 96.5 dB
SINAD: 96 dB at 1 kHz
THD: -120 dB at 1 kHz
True differential analog input range: ±VerOV to Ver with Ver up to VDD on both inputs
No pipeline delay
Single-supply 5 V operation with 1.8V/2.5 V/3 V/5 V logic interface
Proprietary serial interface
SPI-/QSPI-/MICROWIRE-/DSP-compatible
Daisy-chain multiple ADCs, selectable busy indicator
Power dissipation: 40 nJ/conversion
40 μW at 5 V/1 KSPS
4 mW at 5 V/100 kSPS
18 mW at 5 V/500 kSPS
Standby current: 1 nA
10-lead package: MSOP (MSOP-8 size) and 3 mm x 3 mm LFCSP (SOT-23 size)
Pin-for-pin compatible with the 16-bit AD7687 and AD7688 and the 18-bit AD7690 and AD7691

Applications
Battery-powered equipment
Data acquisitions
Seismic data acquisition systems
DVMs
Instrumentation
Medical instruments