TSM9634
A 1µA, SOT23 Precision Current-Sense Amplifier
FEATURES
♦ Alternate-source for MAX9634
♦ Ultra-Low Supply Current: 1μA
♦ Wide Input Common Mode Range: +1.6V to +28V
♦ Low Input Offset Voltage: 250µV (max)
♦ Low Gain Error: <0.5% (max)
♦ Voltage Output
♦ Four Gain Options Available:
TSM9634T: Gain = 25V/V
TSM9634F: Gain = 50V/V
TSM9634H: Gain = 100V/V
TSM9634W: Gain = 200V/V
♦ 5-Pin SOT23 Packaging
DESCRIPTION
The
voltage-output
TSM9634
current-sense
amplifiers are electrically and form-factor identical to
the MAX9634 current-sense amplifiers. Consuming a
very low 1μA supply current, the TSM9634 high-side
current-sense amplifiers exhibit a 250-µV (max) V
OS
and a 0.5% (max) gain error, both specifications
optimized for any precision current measurement. For
all high-side current-sensing applications, the
TSM9634 features a wide input common-mode
voltage range from 1.6V to 28V.
The SOT23 package makes the TSM9634 an ideal
choice for pcb-area-critical, low-current, high-
accuracy current-sense applications in all battery-
powered portable instruments.
All TSM9634s are specified for operation over the
-40°C to +85°C extended temperature range.
APPLICATIONS
Notebook Computers
Power Management Systems
Portable/Battery-Powered Systems
PDAs
Smart Chargers
Smart Phones
TYPICAL APPLICATION CIRCUIT
Input Offset Voltage Histogram
35
30
PERCENT OF UNITS - %
25
20
15
10
5
0
0
10
20
30
40
50
INPUT OFFSET VOLTAGE - µV
The Touchstone Semiconductor logo is a registered
trademark of Touchstone Semiconductor, Incorporated.
PART
TSM9634T
TSM9634F
TSM9634H
TSM9634W
GAIN OPTION
25 V/V
50 V/V
100 V/V
200 V/V
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