1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

CS

NC

GND

AIN1

AIN2

AIN3

AIN4

ADC78H89

AV

DD

SCLK

DOUT

DIN

GND

AIN7

AIN6

AIN5

DV

DD

ADC78H89

www.ti.com

SNAS201D – APRIL 2003 – REVISED MARCH 2013

ADC78H89 7-Channel, 500 KSPS, 12-Bit A/D Converter

Check for Samples: ADC78H89

1

FEATURES

DESCRIPTION

The ADC78H89 is a low-power, seven-channel

23

•

Seven Input Channels

CMOS

12-bit

analog-to-digital

converter

with

a

•

Variable Power Management

conversion throughput of 500 KSPS. The converter is

•

Independent Analog and Digital Supplies

based

on

a

successive-approximation

register

architecture with an internal track-and-hold circuit. It

•

SPI™/QSPI™/MICROWIRE™/DSP Compatible

can be configured to accept up to seven input signals

•

Packaged in 16-Lead TSSOP

on pins AIN1 through AIN7.

The output serial data is straight binary, and is

APPLICATIONS

compatible with several standards, such as SPI™,

•

Automotive Navigation

QSPI™, MICROWIRE™, and many common DSP

•

Portable Systems

serial interfaces.

•

Medical Instruments

The ADC78H89 may be operated with independent

•

Mobile Communications

can range from +2.7V to +5.25V, and the digital

•

Instrumentation and Control Systems

power consumption using a +3V or +5V supply is

KEY SPECIFICATIONS

1.5 mW and 8.3 mW, respectively. The power-down

•

Conversion Rate: 500 KSPS

feature reduces the power consumption to just

0.3 µW using a +3V supply, or 0.5 µW using a +5V

•

DNL: ± 1 LSB (max)

supply. The ADC78H89 is packaged in a 16-lead

•

INL: ± 1 LSB (max)

TSSOP

package.

Operation

over

the

industrial

•

Power Consumption

temperature range of

−40°C to +85°C is ensured.

–

3V Supply: 1.5 mW (typ)

–

5V Supply: 8.3 mW (typ)

Connection Diagram

Figure 1. 16-Lead TSSOP

See PW Package

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

TRI-STATE is a trademark of Texas Instruments.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2003–2013, 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.