SPT9110
100 MSPS SINGLE-TO-DIFFERENTIAL TRACK-AND-HOLD
FEATURES
• 400 MHz Sampling Bandwidth
• 100 MHz Sampling Rate
• Excellent Hold Mode Distortion
-66 dB @ 50 MSPS (f
IN
= 25 MHz)
-58 dB @ 100 MSPS (f
IN
= 50 MHz)
• 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
APPLICATIONS
•
•
•
•
THA for Differential ADCs
RF Demodulation Systems
Test Instrumentation
Digital Sampling Oscilloscopes
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.
BLOCK DIAGRAM
AVCC
(THA)
AVCC
Out+
(INV)
Analog In
(VIN)
1X
1X
Invert InA
CH
OLD
1 kΩ
R1
1 kΩ
R2
-
Out-
+
Invert InB
+2.5 V
Reference
CLK NCLK
AVCC
(Ref)
Ref
Out
Ref
In
AGND
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
