16-Bit, 100 kSPS, Single-Ended
PulSAR ADC in MSOP/QFN
AD7683
APPLICATION DIAGRAM
FEATURES
0.5V TO VDD 2.7V TO 5.5V
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 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
REF
VDD
0V TO V
REF
+IN
–IN
DCLOCK
3-WIRE SPI
INTERFACE
AD7683
D
OUT
CS
GND
Figure 1.
Standby current: 1 nA
8-lead packages:
MSOP
3 mm × 3 mm QFN (LFCSP) (SOT-23 size)
Improved second source to ADS8320 and ADS8325
Table 1. MSOP, QFN (LFCSP)/SOT-23, 14-/16-/18-Bit
PulSAR ADC
400 kSPS
100
kSPS
250
kSPS
to
≥1000
500 kSPS kSPS
ADC
Driver
Type
18-Bit True
Differential
AD7691 AD7690
AD7982 ADA4941
APPLICATIONS
ADA4841
AD7984
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
16-Bit True
Differential
AD7684 AD7687 AD7688
AD7693
ADA4941
ADA4841
16-Bit Pseudo AD7680 AD7685 AD7686
Differential AD7683 AD7694
AD7980 ADA4841
14-Bit Pseudo AD7940 AD7942 AD7946
Differential
ADA4841
GENERAL DESCRIPTION
CS
track-and-hold circuit. On the
falling edge, it samples an
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,
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.
Rev. A
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