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PDF TSC102 Data sheet ( Hoja de datos )
| Número de pieza | TSC102 | |
| Descripción | High-side current sense amplifier plus signal conditioning amplifier | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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TSC102
High-side current sense amplifier plus signal conditioning amplifier
Features
■ Independent supply and input common-mode
voltages
■ Wide common-mode operating range:
2.8 to 30 V
■ Wide common-mode surviving range:
-16 to 60 V (reversed battery and load-dump
conditions)
■ Low current consumption: ICC max = 420 µA
■ Output amplifier for tailor-made signal
conditioning
■ -40 to 125° C operating temperature range
■ 4 kV ESD protection
Applications
■ Battery chargers
■ Automotive current monitoring
■ Notebook computers
■ DC motor control
■ Photovoltaic systems
www.DataS■heePt4rUe.cciosmion current sources
■ Uninterruptible power supplies
■ High-end power supplies
Description
The TSC102 measures a small differential voltage
on a high-side shunt resistor and translates it into
a ground-referenced output voltage.
The device’s wide input common-mode voltage
range, low quiescent current and tiny TSSOP8
packaging enable use in a wide variety of
applications (also available in SO-8 package).
The input common-mode and power supply
voltages are independent. The common-mode
voltage can range from 2.8 to 30 V in operating
conditions.
P
TSSOP8
(Plastic package)
D
SO-8
(Plastic package)
Vm 1
Gnd 2
A1 3
A2 4
Pin connections
(top view)
8 Vp
7 A3
6 Vcc
5 Out
The TSC102 is rugged against abnormal
conditions on the input pins: Vp and Vm can
withstand up to 60 V in case of voltage spikes, as
little as -16 V in case of reversed battery, and up
to 4 kV in case of electrostatic discharge.
In addition to the current sensing amplifier, the
TSC102 offers a fully accessible amplifier for
output signal conditioning.
The device’s overall current consumption is lower
than 420 µA.
November 2009
Doc ID 16754 Rev 1
1/24
www.st.com
24
1 page  
TSC102
3 Electrical characteristics
Electrical characteristics
Unless otherwise specified, the electrical characteristics given in the following tables have
been measured under the following test conditions.
● Tamb = 25° C, VCC = 5 V, Vsense = Vp-Vm = 50 mV, Vm = 12 V.
● No load on Out pin.
● Signal conditioning amplifier used as a buffer (pin A3 connected to pin Out and pin A1
connected to pin A2).
Table 4.
Symbol
Supply
Parameter
ICC Total supply current
ICC1 Total supply current
Test conditions
Vsense = 0 V, pin A1 open, pin
A2 shorted to Gnd
Tmin < Tamb < Tmax
Vsense = 50 mV, pin A1
connected to pin A2
Tmin < Tamb < Tmax
Min.
Typ.
240
420
Max.
420
700
Table 5. Current sensing amplifier input stage
Symbol
Parameter
Test conditions
DC
CMR1
DC common mode rejection
Variation of Va1 versus Vicm
referred to input(1)
2.8 V < Vm < 30 V
-40° C < Tamb < 150° C
AC common mode rejection
AC CMR1 Variation of Va1 versus Vicm
referred to input (peak-to-peak
voltage variation)
2.8 V< Vm < 30 V
1 kHz sine wave
2.8 V < Vm < 30 V
10 kHz sine wave
Supply voltage rejection
SVR1 Variation of Va1 versus VCC(2)
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Vos Input offset voltage(3)
dVos/dT Input offset drift versus T
Ilk Input leakage current
Iib Input bias current
3.5 V< VCC < 5.5 V
-40° C < Tamb < 125° C
Tamb = 25° C
-40° C < Tamb < 125° C
-40° C < Tamb < 125° C
VCC = 0 V
Tmin < Tamb < Tmax
Vsense = 0 V
Tmin < Tamb < Tmax
1. See Chapter 6: Parameter definitions on page 12 for the definition of CMR.
2. See Chapter 6 for the definition of SVR.
3. See Chapter 6 for the definition of Vos.
Min. Typ. Max.
90 100
75
60
85 90
±1.5
±2.3
±3 ±8
1
57
Unit
µA
µA
Unit
dB
dB
dB
dB
mV
µV/°C
µA
µA
Doc ID 16754 Rev 1
5/24
5 Page 
TSC102
Electrical characteristics curves: signal conditioning amplifier
5 Electrical characteristics curves: signal conditioning
amplifier
Unless otherwise specified, the test conditions for the following curves are:
● Tamb = 25° C, VCC = 5 V
● no load on Out.
● signal conditioning amplifier tested as standalone amplifier.
Figure 14. Input offset voltage versus input
common-mode voltage
0.4
0.2
0.0 T=25°C
-0.2 T=-40°C
-0.4
-0.6
-0.8
-1.0 T=125°C
-1.2
-1.4
Figure 15. Input offset voltage versus supply
voltage (Vicm = Vcc/2)
0.4
0.2
0 T=25°C
T=-40°C
-0.2
-0.4
T=125°C
-0.6
-0.8
-1
Vicm (V)
Figure 16. Output current versus output
voltage
50
40 sink
Vid=-1V
30
20
www.DataSheet4U.com
10
0
-10 T=-40°C
-20
-30
-40
-50
T=25°C
T=125°C
source
Vid=1V
Vcc (V)
Figure 17. Bode diagram (Vout = Vcc/2,
RL = 10 kΩ, Cload = 100 pF)
50 210
40 180
30 150
20 120
10 90
0 60
-10 30
-20 0
-30 -30
Vout (V)
Doc ID 16754 Rev 1
11/24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet TSC102.PDF ] | |
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