PulSAR ADC. AD7952 Datasheet

AD7952 ADC. Datasheet pdf. Equivalent

AD7952 Datasheet
Recommendation AD7952 Datasheet
Part AD7952
Description Programmable Input PulSAR ADC
Feature AD7952; www.DataSheet4U.com 14-Bit, 1 MSPS, Differential, Programmable Input PulSAR® ADC AD7952 FEATURES Mu.
Manufacture Analog Devices
Datasheet
Download AD7952 Datasheet




Analog Devices AD7952
Data Sheet
14-Bit, 1 MSPS, Differential,
Programmable Input PulSAR® ADC
AD7952
FEATURES
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)
APPLICATIONS
Process controls
Medical instruments
High speed data acquisition
Digital signal processing
Instrumentation
Spectrum analysis
ATE
GENERAL DESCRIPTION
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
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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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
FUNCTIONAL BLOCK DIAGRAM
TEMP REFBUFIN REF REFGND VCC VEE DVDD DGND
AGND
AVDD
PDREF
PDBUF
IN+
IN–
REF
AMP
REF
SWITCHED
CAP DAC
CNVST
PD
RESET
CLOCK
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
AD7952
SERIAL DATA
PORT
SERIAL
CONFIGURATION
PORT
14
PARALLEL
INTERFACE
OVDD
OGND
D[13:0]
SER/PAR
BYTESWAP
OB/2C
BUSY
RD
CS
WARP IMPULSE BIPOLAR TEN
Figure 1.
Table 1. 48-Lead PulSAR Selection
Input Type
100 to
Res 250
(Bits) (kSPS)
500 to
570
(kSPS)
Bipolar
14
Differential
Bipolar
14
Unipolar
16 AD7651
AD7660 AD7650
AD7661 AD7652
AD7664
AD7666
Bipolar
16 AD7610 AD7665
AD7663
Differential 16 AD7675 AD7676
Unipolar
Simultaneous/
Multichannel
Unipolar
Differential
Unipolar
Differential
Bipolar
16
18
18
AD7654
AD7655
AD7678 AD7679
AD7631
570 to
1000
(kSPS)
AD7951
AD7952
>1000
kSPS
AD7653
AD7667
AD7612
AD7671
AD7677
AD7621
AD7622
AD7623
AD7674
AD7634
AD7641
AD7643
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



Analog Devices AD7952
AD7952
TABLE OF CONTENTS
Features .............................................................................................. 1 
Applications....................................................................................... 1 
General Description ......................................................................... 1 
Functional Block Diagram .............................................................. 1 
Revision History ............................................................................... 2 
Specifications..................................................................................... 3 
Timing Specifications .................................................................. 5 
Absolute Maximum Ratings............................................................ 7 
ESD Caution.................................................................................. 7 
Pin Configuration and Function Descriptions............................. 8 
Typical Performance Characteristics ........................................... 12 
Terminology .................................................................................... 16 
Theory of Operation ...................................................................... 17 
Overview...................................................................................... 17 
Converter Operation.................................................................. 17 
Modes of Operation ................................................................... 18 
Transfer Functions...................................................................... 18 
Typical Connection Diagram ................................................... 18 
Analog Inputs.............................................................................. 20 
REVISION HISTORY
12/12—Rev. 0 to Rev. A
Added Exposed Pad Note................................................................ 8
Changes to Power Sequencing Section........................................ 23
Deleted Evaluating Performance Section .................................... 31
Updated Outline Dimensions ....................................................... 32
Changes to Ordering Guide .......................................................... 32
2/07—Revision 0: Initial Version
Data Sheet
Driver Amplifier Choice ........................................................... 21 
Voltage Reference Input/Output .............................................. 22 
Power Supplies ............................................................................ 22 
Conversion Control ................................................................... 23 
Interfaces.......................................................................................... 24 
Digital Interface.......................................................................... 24 
Parallel Interface......................................................................... 24 
Serial Interface ............................................................................ 25 
Master Serial Interface............................................................... 25 
Slave Serial Interface .................................................................. 27 
Hardware Configuration ........................................................... 29 
Software Configuration ............................................................. 29 
Microprocessor Interfacing....................................................... 30 
Application Information................................................................ 31 
Layout Guidelines....................................................................... 31 
Outline Dimensions ....................................................................... 32 
Ordering Guide .......................................................................... 32 
Rev. A | Page 2 of 32



Analog Devices AD7952
Data Sheet
AD7952
SPECIFICATIONS
AVDD = DVDD = 5 V; OVDD = 2.7 V to 5.5 V; VCC = 15 V; VEE = −15 V; VREF = 5 V; all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
RESOLUTION
ANALOG INPUTS
Differential Voltage Range, VIN
0 V to 5 V
0 V to 10 V
±5 V
±10 V
Operating Voltage Range
0 V to 5 V
0 V to 10 V
±5 V
±10 V
Common-Mode Voltage Range
5V
10 V
Bipolar Ranges
Analog Input CMRR
Input Current
Input Impedance
THROUGHPUT SPEED
Complete Cycle
Throughput Rate
Time Between Conversions
Complete Cycle
Throughput Rate
Complete Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error2
No Missing Codes2
Differential Linearity Error2
Transition Noise
Zero Error (Unipolar or Bipolar)
Zero-Error Temperature Drift
Full-Scale Error (Unipolar or Bipolar)
Full-Scale Error Temperature Drift
Power Supply Sensitivity
AC ACCURACY
Dynamic Range
Signal-to-Noise Ratio, SNR
Signal-to-(Noise + Distortion), SINAD
Total Harmonic Distortion
Spurious-Free Dynamic Range
−3 dB Input Bandwidth
Aperture Delay
Aperture Jitter
Transient Response
Conditions/Comments
(VIN+) − (VIN−)
VIN = 10 V p-p
VIN = 20 V p-p
VIN = 20 V p-p
VIN = 40 V p-p
VIN+, VIN− to AGND
VIN+, VIN−
fIN = 100 kHz
VIN = ±5 V, ±10 V @ 670 kSPS
See Analog Inputs section
In warp mode
In warp mode
In warp mode
In normal mode
In normal mode
In impulse mode
In impulse mode
AVDD = 5 V ± 5%
fIN = 2 kHz, −60 dB
fIN = 2 kHz
fIN = 20 kHz
fIN = 2 kHz
fIN = 2 kHz
fIN = 2 kHz
VIN = 0 V to 5 V
Full-scale step
Min
Typ Max
Unit
14 Bits
−VREF
−2 VREF
−2 VREF
−4 VREF
−0.1
−0.1
−5.1
−10.1
VREF/2 − 0.1
VREF − 0.2
−0.1
VREF/2
VREF
0
75
2201
+VREF
+2 VREF
+2 VREF
+4 VREF
+5.1
+10.1
+5.1
+10.1
VREF/2 + 0.1
VREF + 0.2
+0.1
V
V
V
V
V
V
V
V
V
V
V
dB
μA
1 μs
1 1 MSPS
1 ms
1.25 μs
0 800 kSPS
1.49 μs
0 670 kSPS
−1 ±0.3 +1 LSB3
14 Bits
−1 +1 LSB
0.55 LSB
−15 +15 LSB
±1 ppm/°C
−20 +20 LSB
±1 ppm/°C
±0.8 LSB
84.5 85.5
dB4
84.5 85.5
dB
85.5 dB
83 85.4
dB
−105
dB
102 dB
45 MHz
2 ns
5 ps rms
500 ns
Rev. A | Page 3 of 32







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