ADS5203

Features:

· 3.3V Single-Supply Operation
· Dual Simultaneous Sample-and-Hold Inputs
· Differential or Single-Ended Analog Inputs
· Single or Dual Parallel Bus Output
· 60dB SNR at f_IN = 10.5MHz
· 73dB SFDR at f_IN = 10.5MHz
· Low Power: 240mW
· 300MHz Analog Input Bandwidth
· 3.3V TTL/CMOS-Compatible Digital I/O
· Internal or External Reference
· Adjustable Reference Input Range
· Power-Down (Standby) Mode
· TQFP-48 Package

Application

· Digital Communications (Baseband Sampling)
· Video Processing
· Portable Instrumentation
· Ultrasound


Specifications

Supply Voltage: AV_DD to AGND, DV_DD to DGND ...............................0.5V to 3.6V
Supply Voltage: AV_DD to DV_DD, AGND to DGND .............................. 0.5V to 0.5V
Digital Input Voltage Range to DGND .................................0.5V to DV_DD + 0.5V
Analog Input Voltage Range to AGND................................ 0.5V to AV_DD + 0.5V
Digital Output Voltage Applied from Ext. Source to DGND...0.5V to DV_DD + 0.5V
Reference Voltage Input Range to AGND: VREFT, VREFB.....0.5V to AV_DD + 0.5V
Operating Free-Air Temperature Range, T_A (ADS5203I) .............40°C to +85°C
Storage Temperature Range, T_STG ........................................65°C to +150°C
Soldering Temperature 1.6mm (1/16 inch) from case for 10 seconds.........300°C


Description

The ADS5203 is a dual 10-bit, 40MSPS Analog-to-Digital Converter (ADC). It simultaneously converts each analog input signal into a 10-bit, binary coded digital word up to a maximum sampling rate of 40MSPS per channel. All digital inputs and outputs are 3.3V TTL/CMOS compatible.

An innovative dual-pipeline architecture implemented in a CMOS process and the 3.3V supply results in very low power dissipation. In order to provide maximum flexibility, both top and bottom voltage references can be set from user-supplied voltages. Alternatively, if no external references are available, the on-chip internal references can be used. Both ADCs share a common reference to improve offset and gain matching. If external reference voltage levels are available, the internal references can be powered down independently from the rest of the ADS5203, resulting in even greater power savings.

he ADS5203 is characterized for operation from 40°C to +85°C and is available in a TQFP-48 package.