16-Bit 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER
Description
ADS8344 ¤ ADS8344 ¤
ADS8344
SBAS139E – SEPTEMBER 2000 – REVISED SEPTEMBER 2006
16-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER
FEATURES
q PIN FOR PIN WITH ADS7844 q SINGLE SUPPLY: 2.
7V to 5V q 8-CHANNEL SINGLE-ENDED OR
4-CHANNEL DIFFERENTIAL INPUT q UP TO 100kHz CONVERSION RATE q 84dB SINAD q SERIAL INTERFACE q QSOP-20 AND SSOP-20 PACKAGES
APPLICATIONS
q DATA ACQUISITION q TEST AND MEASUREMENT EQUIPMENT q INDUSTRIAL PROCESS CONTROL q PERSONAL DIGITAL ASSISTANTS q BATTERY-POWERED SYSTEMS
DESCRIPTION
The ADS8344 is an 8-channel, 16-bit, sampling Analog-to-Digital (A/D) converter with a synchronous serial interface.
Typical power dissipation is 10mW at a 100kHz throughput rate and a +5V supply.
The reference voltage (VREF) can be varied between 500mV and VCC, providing a corresponding input voltage range of 0V to VREF.
The device includes a shutdown mode that reduces power dissipation to under 15µW.
The ADS8344 is tested down to 2.
7V operation.
Low power, high speed, and an on-board multiplexer make the ADS8344 ideal for battery-operated systems such as personal digital assistants, portable multi-channel data loggers, and measurement equipment.
The serial interface also provides low-cost isolation for remote data acquisition.
The ADS8344 is available in a QSOP-20 or SSOP-20 package and is ensured over the –40°C to +85°C temperature range.
CH0 CH1 CH2 CH3 COM
ADS8341 ADS8343
4-Channel Multiplexer
CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 COM VREF
ADS8344 ADS8345
8-Channel Multiplexer
SAR
CDAC
Comparator
Serial Interface
and Control
DCLK
CS SHDN DIN DOUT
BUSY
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the te...
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