TS1101 Datasheet, PDF (1/11 Pages) Touchstone Semiconductor Inc – A 1uA, +2V to +25V Bidirectional Precision Current-Sense Amplifier

TS1101
A 1µA, +2V to +25V Bidirectional Precision Current-Sense Amplifier
FEATURES
♦ Ultra-Low Supply Current: 1μA
♦ Wide Input Common Mode Range: +2V to +25V
♦ Low Input Offset Voltage: 100μV (max)
♦ Low Gain Error: 0.6% (max)
♦ Voltage Output
♦ SIGN Comparator Output: No “Dead Zone”
at I_LOAD Switchover
♦ Four Gain Options Available:
TS1101-25: Gain = 25V/V
TS1101-50: Gain = 50V/V
TS1101-100: Gain = 100V/V
TS1101-200: Gain = 200V/V
♦ 6-Lead SOT23 Packaging
APPLICATIONS
Notebook Computers
Power Management Systems
Portable/Battery-Powered Systems
Smart Chargers
Smart Phones
DESCRIPTION
The bi-directional, voltage-output TS1101 current-
sense amplifiers are the lowest-power and most
accurate current-sense amplifiers available today.
Consuming a very low 1μA supply current, the
TS1101 high-side current-sense amplifiers exhibit a
100-µV (max) V_OS and a 0.6% (max) gain error, both
specifications optimized for any precision current
measurement. For all high-side bidirectional current-
sensing applications, the TS1101s are self-powered
and feature a wide input common-mode voltage
range from 2V to 25V. A SIGN comparator digital
output is also provided that indicates the direction of
current flow depending on the external connections to
the TS1101’s RS+ and RS- input terminals.
The SOT23 package makes the TS1101 an ideal
choice for pcb-area-critical, supply-current-conscious,
high-accuracy current-sense applications in all
battery-powered and portable instruments.
All TS1101s are specified for operation over the
-40°C to +105°C extended temperature range.
TYPICAL APPLICATION CIRCUIT
SIGN Comparator’s Symmetric I_LOAD Switchover
The Touchstone Semiconductor logo is a registered
trademark of Touchstone Semiconductor, Incorporated.
PA`RT
TS1101-25
TS1101-50
TS1101-100
TS1101-200
GAIN OPTION
25 V/V
50 V/V
100 V/V
200 V/V
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© 2012 Touchstone Semiconductor, Inc. All rights reserved.