14-Bit, 1 MSPS, Differential,
Programmable Input PulSAR® ADC
AD7952
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
TEMP REFBUFIN REF REFGND VCC VEE DVDD
AGND
AVDD
SERIAL
CONFIGURATION
14
PORT
PDBUF
SWITCHED
CAP DAC
IN–
OGND
SERIAL DATA
PORT
REF
IN+
OVDD
AD7952
REF
AMP
PDREF
DGND
D[13:0]
SER/PAR
BYTESWAP
PARALLEL
INTERFACE
CLOCK
CNVST
OB/2C
BUSY
PD
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
RESET
RD
CS
06589-001
Multiple pins/software-programmable input ranges
+5 V (10 V p-p), +10 V (20 V p-p), ±5 V (20 V p-p),
±10 V (40 V p-p)
Pins or serial SPI®-compatible input ranges/mode selection
Throughput
1 MSPS (warp mode)
800 kSPS (normal mode)
670 kSPS (impulse mode)
14-bit resolution with no missing codes
INL: ±0.3 LSB typical, ±1 LSB maximum (±61 ppm of FSR)
SNR: 85 dB @ 2 kHz
iCMOS® process technology
5 V internal reference: typical drift 3 ppm/°C; TEMP output
No pipeline delay (SAR architecture)
Parallel (14- or 8-bit bus) and serial 5 V/3.3 V interface
SPI-/QSPI™-/MICROWIRE™-/DSP-compatible
Power dissipation
235 mW @ 1 MSPS
10 mW @ 1 kSPS
48-lead LQFP and 48-lead LFCSP (7 mm × 7 mm)
WARP IMPULSE BIPOLAR TEN
Figure 1.
Table 1. 48-Lead PulSAR Selection
100 to
250
(kSPS)
500 to
570
(kSPS)
570 to
1000
(kSPS)
Input Type
Res
(Bits)
Bipolar
14
AD7951
Differential
Bipolar
14
AD7952
Process controls
Medical instruments
High speed data acquisition
Digital signal processing
Instrumentation
Spectrum analysis
ATE
Unipolar
16
Bipolar
16
AD7610
AD7663
AD7665
AD7612
AD7671
GENERAL DESCRIPTION
Differential
Unipolar
16
AD7675
AD7676
AD7677
>1000
kSPS
APPLICATIONS
AD7653
AD7660
AD7650
AD7661
AD7667
AD7652
AD7664
AD7666
The AD7952 is a 14-bit, charge redistribution, successive
approximation register (SAR) architecture analog-to-digital
converter (ADC) fabricated on Analog Devices, Inc.’s iCMOS
high voltage process. The device is configured through hardware or
via a dedicated write-only serial configuration port for input
range and operating mode. The AD7952 contains a high speed
14-bit sampling ADC, an internal conversion clock, an internal
reference (and buffer), error correction circuits, and both serial
and parallel system interface ports. A falling edge on CNVST
samples the fully differential analog inputs on IN+ and IN−.
The AD7952 features four different analog input ranges and three
different sampling modes: warp mode for the fastest throughput,
normal mode for the fastest asynchronous throughput, and
impulse mode where power is scaled with throughput.
Operation is specified from −40°C to +85°C.
Rev. A
AD7651
AD7621
AD7622
AD7623
Simultaneous/
Multichannel
Unipolar
16
AD7654
AD7655
Differential
Unipolar
18
AD7678
Differential
Bipolar
18
AD7631
AD7679
AD7674
AD7641
AD7643
AD7634
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2007–2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com