ADS8344NB/1K Multi Channel 8 Bit Shift Register IC , Da Converter Circuit For Battery Operated Systems

ADS8344NB/1K Data Converter IC ADC 16-Bit 8-Ch Serial Output Sampling

1 FEATURES

● PIN FOR PIN WITH ADS7844

● SINGLE SUPPLY: 2.7V to 5V

● 8-CHANNEL SINGLE-ENDED OR 4-CHANNEL DIFFERENTIAL INPUT

● UP TO 100kHz CONVERSION RATE

● 84dB SINAD

● SERIAL INTERFACE

● QSOP-20 AND SSOP-20 PACKAGES

2 APPLICATIONS

● DATA ACQUISITION
● TEST AND MEASUREMENT EQUIPMENT

● INDUSTRIAL PROCESS CONTROL
● PERSONAL DIGITAL ASSISTANTS
● BATTERY-POWERED SYSTEMS

3 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 dissi- pation 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 log- gers, 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.