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ADS7946SRTET Datasheet(PDF) 1 Page - Texas Instruments

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Part # ADS7946SRTET
Description  14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital Converters
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7946SRTET Datasheet(HTML) 1 Page - Texas Instruments

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SPI
AV D
D
DVDD
GND
AIN0P
AIN1N
AIN0N
AIN1P
PDEN
SAR
ADC
SCLK
SDO
CS
REFGND
REF
CHSEL
MUX
S/H
ADS7945
SPI
AV D
D
DVDD
GND
AIN0
AIN1GND
AIN0GND
AIN1
PDEN
SAR
ADC
SCLK
SDO
CS
REFGND
REF
CHSEL
MUX
S/H
ADS7946
ADS7945
ADS7946
www.ti.com
SBAS539B
– JUNE 2011 – REVISED SEPTEMBER 2011
14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended,
Ultralow-Power Analog-to-Digital Converters
Check for Samples: ADS7945, ADS7946
1
FEATURES
DESCRIPTION
The ADS7945/6 are 14-bit, 2 MSPS analog-to-digital
23
Sample Rate: 2 MSPS
converters (ADCs), with differential and single-ended
14-Bit, Pin-Compatible with 8/10/12-bit
inputs, respectively. The devices operate at a 2
ADS7947/8/9 Family (ADS7946)
MSPS sample rate with a standard 16-clock data
Outstanding Performance:
frame. The devices feature both outstanding dc
precision and excellent dynamic performance; the
– SNR: 84 dB (ADS7945)
ADS7946 is pin-compatible with the 8/10/12-bit
– No Missing Codes
ADS7947/8/9
devices.
The
devices
include
a
– INL: 1.5 LSB (max) (ADS7945)
two-channel
input
multiplexer
and
a
low-power
successive approximation register (SAR) ADC with
Low Power:
an inherent sample-and-hold (S/H) input stage.
– 11.6 mW at 2 MSPS Operation
The ADS7945/6 support a wide analog supply range
– Auto Power-Down at Lower Speeds:
that allows the full-scale input range to extend to
±5 V
– 7.2 mW at 500 kSPS
differential or 5 V single-ended. A simple SPI
™, with
– 1.4 mW at 100 kSPS
a digital supply that can operate as low as 1.65 V,
allows for easy interfacing to a wide variety of digital
– 0.3 mW at 20 kSPS
controllers. Automatic power-down can be enabled
Wide Supply Range:
when operating at slower speeds to dramatically
– Analog: 2.7 V to 5.25 V
reduce power consumption.
– Digital: 1.65 V to AVDD
Offered in a tiny 3 mm
× 3 mm QFN package, the
Simple Serial Interface (SPI)
ADS7945/6 are fully specified over the extended
temperature range of
–40°C to +125°C and are
Fully Specified from
–40°C to +125°C
suitable for a wide variety of data acquisition
Tiny Footprint: 3 mm
× 3 mm QFN
applications where high performance, low power, and
small package size are key.
APPLICATIONS
Optical Networking
Medical Instrumentation
Battery-Powered Equipment
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
© 2011, 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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