Successive Approximation Register and Control Logic

Clock

BUSY

Comparator

BYTE

CS

R/C

CDAC

Buffer

REF

CAP

± 10 V Input

2 k

Ω

25.67 k

Ω

7 k

Ω

Internal

+4.096 V Ref

4 k

Ω

Output

Latches

and

Three

State

Drivers

Three

State

Parallel

Data

Bus

ADS8515

www.ti.com

SLAS460D – JUNE 2007 – REVISED SEPTEMBER 2010

16-Bit 250-kSPS Sampling CMOS ANALOG-TO-DIGITAL CONVERTER

Check for Samples: ADS8515

1

FEATURES

DESCRIPTION

2

•

Standard ±10-V Input Range

The

ADS8515

is

a

complete

16-bit

sampling

analog-to-digital (A/D) converter using state-of-the-art

•

90-dB Min SNR with 20-kHz Input

CMOS structures. It contains a complete 16-bit,

•

±2.0 LSB Max INL

capacitor-based, SAR A/D converter with sample and

•

±1 LSB Max DNL, 16 Bits, No Missing Code

hold

(S/H),

reference,

clock,

interface

for

•

5-V Analog Supply, Flexible I/O Supply Voltage

microprocessor use, and 3-state output drivers.

at 1.65 V to 5.25 V

The ADS8515 is specified at a 250-kHz sampling rate

•

Pin-Compatible with ADS7805/10 (Low Speed),

over the full temperature range. Precision resistors

and 12-Bit ADS7804/8504

provide an industry standard ±10-V input range, while

the innovative design allows operation from a single

•

Uses Internal or External Reference

+5-V supply, with power dissipation under 100 mW.

•

Full Parallel Data Output

The ADS8515 is available in a 28-pin SSOP package

•

100-mW Typ Power Dissipation at 250 kSPS

and is fully specified for operation over the industrial

•

28-Pin SSOP Package

–40°C to 85°C temperature range.

APPLICATIONS

•

Industrial Process Control

•

Data Acquisition Systems

•

Digital Signal Processing

•

Medical Equipment

•

Instrumentation

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

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2010, 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.