AD7683 Datasheet, PDF (1/16 Pages) Analog Devices – 16-Bit, 100 kSPS PulSAR ADC in MSOP/QFN

FEATURES
16-bit resolution with no missing codes
Throughput: 100 kSPS
INL: ±1 LSB typ, ±3 LSB max
Pseudodifferential analog input range
0 V to VREF with VREF up to VDD
Single-supply operation: 2.7 V to 5.5 V
Serial interface SPI®/QSPI™/MICROWIRE™/DSP-compatible
Power dissipation : 4 mW @ 5 V, 1.5 mW @ 2.7 V,
150 µW @ 2.7 V/10 kSPS
Standby current: 1 nA
8-lead package: MSOP package and
3 mm × 3 mm QFN¹ (LFCSP) (SOT-23 size)
Improved 2^nd source to ADS8320 and ADS8325
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
16-Bit, 100 kSPS PulSAR
ADC in MSOP/QFN
AD7683
APPLICATION DIAGRAM
0.5V TO VDD 2.7V TO 5.5V
0 TO V_REF
REF
VDD
+IN
DCLOCK
–IN ^AD7683 DOUT
GND
CS
Figure 1.
3-WIRE SPI
INTERFACE
Table 1. MSOP, QFN (LFCSP)/SOT-23, 16-Bit PulSAR ADC
Type
100 kSPS 250 kSPS 500 kSPS
True Differential
AD7684 AD7687 AD7688
Pseudo
AD7683
Differential/Unipolar
AD7685
AD7694
AD7686
Unipolar
AD7680
GENERAL DESCRIPTION
The AD7683 is a 16-bit, charge redistribution, successive
approximation, PulSAR™ analog-to-digital converter (ADC)
that operates from a single power supply, VDD, between 2.7 V
to 5.5 V. It contains a low power, high speed, 16-bit sampling
ADC with no missing codes (B grade), an internal conversion
clock, and a serial, SPI-compatible interface port. The part also
contains a low noise, wide bandwidth, short aperture delay,
track-and-hold circuit. On the CS falling edge, it 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. Its power scales linearly with
throughput.
The AD7683 is housed in an 8-lead MSOP or an 8-lead QFN
(LFCSP) package, with an operating temperature specified from
−40°C to +85°C.
1 _{QFN package in development. Contact factory for samples and availability.}
Rev. 0
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