16-Bit, 100 kSPS, Single-Ended
PulSAR ADC in MSOP/QFN
Data Sheet
AD7683
Rev. B Document Feedback
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FEATURES
16-bit resolution with no missing codes
Throughput: 100 kSPS
INL: ±1 LSB typical, ±3 LSB maximum
Pseudo differential analog input range
0 V to V
REF
with V
REF
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 packages:
MSOP
3 mm × 3 mm QFN (LFCSP) (SOT-23 size)
Improved second source to ADS8320 and ADS8325
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
APPLICATION DIAGRAM
AD7683
REF
GND
VDD
+IN
–IN
DCLOCK
D
OUT
CS
3-WIRE SPI
INTERFACE
0.5V TO VDD 2.7V TO 5.5
0V TO V
REF
04301-001
Figure 1.
Table 1. MSOP, QFN (LFCSP)/SOT-23, 14-/16-/18-Bit
PulSAR ADC
Type
100
kSPS
250
kSPS
400 kSPS
to
500 kSPS
≥1000
kSPS
ADC
Driver
18-Bit True
Differential
AD7691 AD7690 AD7982
AD7984
ADA4941-1
ADA4841-1
16-Bit True
Differential
AD7684 AD7687 AD7688
AD7693
ADA4941-1
ADA4841-1
16-Bit
Pseudo
Differential
AD7680
AD7683
AD7685
AD7694
AD7686 AD7980 ADA4841-1
14-Bit
Pseudo
Differential
AD7940 AD7942 AD7946 ADA4841-1
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
and 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.
