PGA112

PGA113

PGA117

PGA116

PGA116

1

FEATURES

APPLICATIONS

DESCRIPTION

10kW

ADC

G=1

R

F

R

I

Output

Stage

SPI

Interface

SCLK

DIO

CS

7

V

OUT

5

DV

DD

10

AV

DD

1

GND

6

V

REF

4

3

8

9

MSP430

Microcontroller

+3V

+5V

V

REF

PGA112

PGA113

V

/CH0

CAL

2

CH1

CAL3

CAL4

CAL1

CAL2

0.1V

CAL

0.9V

CAL

10kW

80kW

MUX

CAL2/3

C

0.1 F

BYPASS

m

C

0.1 F

BYPASS

m

C

0.1 F

BYPASS

m

PGA112,, PGA113

Single-Supply, Single-Ended, Precision

Programmable Gain Amplifier with MUX

• Remote e-Meter Reading

23

• Rail-to-Rail Input/Output

• Automatic Gain Control

• Offset: 25µV (typ), 100µV (max)

• Portable Data Acquisition

• Zerø Drift: 0.35µV/°C (typ), 1.2µV/°C (max)

• PC-Based Signal Acquisition Systems

• Low Noise: 12nV/√Hz

• Test and Measurement

• Input Offset Current: ±5nA max (+25°C)

• Programmable Logic Controllers

• Gain Error: 0.1% max (G ≤ 32),

• Battery-Powered Instruments

0.3% max (G > 32)

• Handheld Test Equipment

• Binary Gains: 1, 2, 4, 8, 16, 32, 64, 128

(PGA112, PGA116)

• Scope Gains: 1, 2, 5, 10, 20, 50, 100, 200

The PGA112 and PGA113 (binary/scope gains) offer

(PGA113, PGA117)

two analog inputs, a three-pin SPI interface, and

• Gain Switching Time: 200ns

software shutdown in an MSOP-10 package. The

• Two Channel MUX: PGA112, PGA113

PGA116 and PGA117 (binary/scope gains) offer 10

10 Channel MUX: PGA116, PGA117

analog

inputs,

a

four-pin

SPI

interface

with

daisy-chain capability, and hardware and software

• Four Internal Calibration Channels

shutdown in a TSSOP-20 package.

• Amplifier Optimized for Driving CDAC ADCs

All versions provide internal calibration channels for

• Output Swing: 50mV to Supply Rails

system-level calibration. The channels are tied to

• AV

• I

an external voltage connected to Channel 0, is used

as the system calibration reference. Binary gains are:

• Software/Hardware Shutdown: I

1, 2, 4, 8, 16, 32, 64, and 128; scope gains are: 1, 2,

• Temperature Range: –40°C to +125°C

5, 10, 20, 50, 100, and 200.

• SPI™ Interface (10MHz) with Daisy-Chain

Capability

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

SPI is a trademark of Motorola.

3

All other trademarks are the property of their respective owners.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright © 2008, Texas Instruments Incorporated

PRODUCTION DATA information 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.