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ADS7948SRTET Datasheet(PDF) 1 Page - Texas Instruments

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Part # ADS7948SRTET
Description  12/10/8-Bit, 2MSPS, Dual-Channel, Unipolar, Pseudo-Differential, Ultralow-Power SAR Analog-to-Digital Converters
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7948SRTET Datasheet(HTML) 1 Page - Texas Instruments

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SPI
AV D
D
DVDD
GND
AIN0P
AIN1P
AIN0N
AIN1N
PDEN
SAR
ADC
SCLK
SDO
CS
REFGND
REF
CHSEL
MUX
S/H
ADS7947
ADS7948
ADS7949
www.ti.com
SLAS708 – SEPTEMBER 2010
12/10/8-Bit, 2MSPS, Dual-Channel, Unipolar, Pseudo-Differential, Ultralow-Power
SAR Analog-to-Digital Converters
Check for Samples: ADS7947 , ADS7948, ADS7949
1
FEATURES
DESCRIPTION
23
Sample Rate: 2MSPS
The ADS7947/8/9 are 12-bit, 10-bit, and 8-bit 2MSPS
analog-to-digital
converters
(ADCs),
respectively.
Pin-Compatible Family: 12/10/8-Bit
Devices operate at 2MSPS sample rate with a
Outstanding Performance:
standard 16 clock data frame. In addition, it is
No Missing Codes
possible
to
operate
the
ADS7947
(12-bit)
at
INL: 1LSB (max)
2.1MSPS, the ADS7948 (10-bit) at 2.57MSPS, and
the ADS7949 (8-bit) at 3MSPS with a short data
SNR: 72dB (min)
frame optimized for the number of clocks sufficient for
Low Power:
conversion with no drop in performance. The devices
7.5mW at 2MSPS Operation
feature both outstanding dc precision and excellent
dynamic performance, this family of pin-compatible
Auto Power-Down at Lower Speeds:
devices includes a two-channel input multiplexer and
3.8mW at 500kSPS
a low-power successive approximation register (SAR)
0.8mW at 100kSPS
ADC with an inherent sample-and-hold (S/H) input
stage.
0.16mW at 20kSPS
Wide Supply Range:
The ADS7947/8/9 support a wide analog supply
range that allows the full-scale input range to extend
Analog: 2.7V to 5.5V
to 5V. A simple SPI™, with a digital supply that can
Digital: 1.65V to AVDD
operate as low as 1.65V, allows for easy interfacing
Simple Serial Interface (SPI)
to a wide variety of digital controllers. Automatic
power-down can be enabled when operating at
Fully Specified from –40°C to +125°C
slower
speeds
to
dramatically
reduce
power
Tiny Footprint: 3mm × 3mm QFN
consumption.
Offered in a tiny 3mm × 3mm QFN package, the
APPLICATIONS
ADS7947/8/9 are fully specified over the extended
Communication Systems
temperature range of –40°C to +125°C and are
Optical Networking
suitable for a wide variety of data acquisition
Medical Instrumentation
applications where high performance, low power, and
Battery-Powered Equipment
small size are key.
Data Acquisition Systems
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
SPI is a trademark of Motorola.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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