16-Bit, 100 kSPS PulSAR
ADC in MSOP/QFN
AD7683
FEATURES
16-bit resolution with no missing codes
Throughput: 100 kSPS
INL: 鹵1 LSB typ, 鹵3 LSB max
Pseudodifferential 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廬/QSPI鈩?MICROWIRE鈩?DSP-compatible
Power dissipation : 4 mW @ 5 V, 1.5 mW @ 2.7 V,
150 碌W @ 2.7 V/10 kSPS
Standby current: 1 nA
8-lead package: MSOP package and
3 mm 脳 3 mm QFN
1
(LFCSP) (SOT-23 size)
Improved 2
nd
source to ADS8320 and ADS8325
APPLICATION DIAGRAM
0.5V TO VDD 2.7V TO 5.5V
0 TO V
REF
+IN
鈥揑N
REF
VDD
DCLOCK
3-WIRE SPI
INTERFACE
04301-001
AD7683
GND
D
OUT
CS
Figure 1.
Table 1. MSOP, QFN (LFCSP)/SOT-23, 16-Bit PulSAR ADC
Type
True Differential
Pseudo
Differential/Unipolar
Unipolar
100 kSPS
AD7684
AD7683
AD7680
250 kSPS
AD7687
AD7685
AD7694
500 kSPS
AD7688
AD7686
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
GENERAL DESCRIPTION
The AD7683 is a 16-bit, charge redistribution, successive
approximation, PulSAR鈩?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, 鈥揑N. 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
鈭?0擄C to +85擄C.
1
QFN package in development. Contact factory for samples and availability.
Rev. 0
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