SPT9110

100 MSPS SINGLE-TO-DIFFERENTIAL TRACK-AND-HOLD

APPLICATIONS

• THA for Differential ADCs

• RF Demodulation Systems

• Test Instrumentation

• Digital Sampling Oscilloscopes

FEATURES

• 400 MHz Sampling Bandwidth

• 100 MHz Sampling Rate

• Excellent Hold Mode Distortion

• Track Mode Slew Rate: 700 V/

µs

• Low Power:

120 mW Differential Mode

75 mW Single-Ended Mode

• Single +5 V Supply

• Internal +2.5 V Reference

BLOCK DIAGRAM

GENERAL DESCRIPTION

The SPT9110 is a single-to-differential track-and-hold ampli-

fier. It can be operated as a single-end THA only or, in full

configuration, as a single-to-differential THA. An internal

reference provides the common-mode voltage for the single-

to-differential output stage. The THA, inverter and reference

have separate power supply pins so each can be optionally

powered up and used.

This device provides an analog designer with a low cost

single-to-differential THA amplifier for interfacing differential

and single-ended ADCs.

The SPT9110 is offered in a 28-lead SOIC package in the

industrial temperature range.

1X

1X

CLK NCLK

Analog In

(VIN)

+2.5 V

Reference

Ref

Out

Out+

Out-

-

+

Ref

In

Invert InA

AGND

AVCC

(Ref)

AVCC

(INV)

AVCC

(THA)

1 k

Ω

1 k

Ω

Invert InB

R2

R1