ADS5120| Datasheet

Datasheet preview, take a look at Datasheets before downloading (Data Sheet is available on manufacturer site)

ADS5120
SBAS247E MARCH 2002 REVISED NOVEMBER 2005

8-Channel, 10-Bit, 40MSPS, 1.8V CMOS ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 8 DIFFERENTIAL ANALOG INPUTS q 1VPP DIFFERENTIAL INPUT RANGE q INT/EXT VOLTAGE REFERENCE q ANALOG/DIGITAL SUPPLY 1.8V q DIGITAL I/O SUPPLY 1.8V/3.3V q INTEGRAL NONLINEARITY: 0.8LSB q SIGNAL-TO-NOISE: 58dB at fIN = 20MHz q SPURIOUS-FREE DYNAMIC RANGE: 72dB at fIN = 20MHz q 794mW POWER DISSIPATION q INDIVIDUAL CHANNEL POWER-DOWN q 257-LEAD, 0.8 BALL PITCH, PLASTIC MicroSTAR BGATM (16 16mm)

DESCRIPTION
The ADS5120 is a low-power, 8-channel, 10-bit, 40MSPS CMOS Analog-to-Digital Converter (ADC) that operates from a single 1.8V supply, while offering 1.8V and 3.3V digital I/O flexibility. A single-ended input clock is used for simultaneous sampling of up to eight analog differential input channels. The flexible duty cycle adjust circuit (DCASEL) allows the use of a non-50% clock duty cycle. Individual standby pins allow users the ability to power-down any number of ADCs. A sample-andhold stage is added in front of the ADC and a digital error correction circuit is used to generate the final digital code. The internal reference can be bypassed to use an external reference to suit the accuracy and temperature drift requirements of the application. A 10-bit parallel bus on eight channels is provided with 3-state outputs. The speed, resolution, and low-power of the ADS5120 makes it ideal for applications requiring high-density signal processing in low-power environments. The ADS5120 is characterized for operation
from 0 C to 70 C.

APPLICATIONS
q PORTABLE ULTRASOUND q PORTABLE INSTRUMENTATION
CLK AINA+ AVDD

STBY (x8)

DRVDD

DVDD

T&H AINA

10-Bit ADC

3-State Output Buffers

D[9:0]A

AINH T&H AINH+ 10-Bit ADC

3-State Output Buffers

D[9:0]H

IREFR

Internal Reference Circuit

CM DCASEL

AGND

PDREF REFT REFB CML DRVGND

DGND

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. MicroSTAR BGA is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

www.ti.com