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TSM9938 Datasheet(PDF) 3 Page - Touchstone Semiconductor Inc

Part No. TSM9938
Description  A 1uA, SOT23 Precision Current-Sense Amplifier
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Manufacturer  TOUCHSTONE [Touchstone Semiconductor Inc]
Direct Link  http://www.touchstonesemi.com
Logo TOUCHSTONE - Touchstone Semiconductor Inc

TSM9938 Datasheet(HTML) 3 Page - Touchstone Semiconductor Inc

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TSM9938
TSM9938DS r1p0
Page 3
RTFDS
ELECTRICAL CHARACTERISTICS
VRS+ = VRS- = 3.6V; VSENSE = (VRS+ - VRS-) = 0V; TA = -40°C to +85°C, unless otherwise noted. Typical values are at
TA = +25°C. See Note 1
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Current (Note 2)
ICC
VRS+ = 5V, TA = +25°C
0.5
0.85
μA
VRS+ = 5V, -40°C < TA < +85°C
1.1
VRS+ = 28V, TA = +25°C
1.1
1.8
VRS+ = 28V, -40°C < TA < +85°C
2.5
Common-Mode Input Range
VCM
Guaranteed by CMRR , -40°C < TA < +85°C
1.6
28
V
Common-Mode Rejection
Ratio
CMRR
1.6V < VRS+ < 28V, -40°C < TA < +85°C
94
130
dB
Input Offset Voltage (Note 3)
VOS
TA = +25°C
±100
±500
μV
-40°C < TA < +85°C
±600
Gain
G
TSM9938T
25
V/V
TSM9938F
50
TSM9938H
100
TSM9938W
200
Gain Error (Note 4)
GE
TSM9938T/TSM9938F/
TSM9938H
TA = +25°C
±0.1
±0.5
%
-40°C < TA < +85°C
±0.6
TSM9938W
TA = +25°C
±0.1
±0.7
-40°C < TA < +85°C
±0.8
Output Resistance
ROUT
(Note 5)
TSM9938T/F/H
7.0
10
13.2
TSM9938W
14.0
20
26.4
OUT Low Voltage
VOL
Gain = 25
1.5
15
mV
Gain = 50
3
30
Gain = 100
6
60
Gain = 200
12
120
OUT High Voltage
VOH
VOH = VRS- - VOUT (Note 6)
0.1
0.2
V
Note 1: All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by product
characterization.
Note 2: Extrapolated to VOUT = 0. ICC is the total current into the RS+ and the RS- pins.
Note 3: Input offset voltage VOS is extrapolated from VOUT with VSENSE set to 1mV.
Note 4: Gain error is calculated by applying two values for VSENSE and then calculating the error of the actual slope vs. the
ideal transfer characteristic:
For GAIN = 25, the applied VSENSE is 20mV and 120mV.
For GAIN = 50, the applied VSENSE is 10mV and 60mV.
For GAIN = 100, the applied VSENSE is 5mV and 30mV.
For GAIN = 200, the applied VSENSE is 2.5mV and 15mV.
Note 5: The device is stable for any capacitive load at VOUT.
Note 6: VOH is the voltage from VRS- to VOUT with VSENSE = 3.6V/GAIN.


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