TSC1031 STMicroelectronics, TSC1031 Datasheet - Page 13

• Manufacturer Part Number: TSC1031
• Description: High-voltage high side current sense amplifier
• Manufacturer: STMicroelectronics

Specifications of TSC1031

• Wide Common-mode Operating Range: 2.9 to 70 V in single-supply configuration -2.1 to 65 V in dual-supply configuration
• Wide Common-mode Surviving Range: -16 to 75 V (reversed battery and load-dump conditions)
• Supply Voltage Range: 2.7 to 5.5 V in single supply configuration
• Low Current Consumption: ICCmax = 360 μA
• Pin Selectable Gain: 50 V/V or 100 V/V

TSC1031
5
5.1
5.2
5.3
Parameter definitions
Common mode rejection ratio (CMR)
The common mode rejection ratio (CMR) measures the ability of the current sensing
amplifier to reject any DC voltage applied on both inputs V
back to the input so that its effect can be compared with the applied differential signal. The
CMR is defined by the formula:
Supply voltage rejection ratio (SVR)
The supply voltage rejection ratio (SVR) measures the ability of the current-sensing
amplifier to reject any variation of the supply voltage V
input so that its effect can be compared with the applied differential signal. The SVR is
defined by the formula:
Gain (Av) and input offset voltage (V
The input offset voltage is defined as the intersection between the linear regression of the
V
V
calculated with the following formula.
out
sense
vs. V
= V
sense
sense1
curve with the X-axis (see
and V
V
os
out2
=
SVR
is the output voltage with V
V
CMR
sense1
Doc ID 16875 Rev 2
=
=
–
–
20
–
⎛
⎝
20
V
----------------------------------------------- -
⋅
sense1
V
⋅
log
out1
log
Figure
----------------------------- -
ΔV
------------------------------
ΔV
–
–
ΔV
CC
V
V
ΔV
icm
sense2
out2
out
⋅
17.). If V
out
⋅
Av
Av
sense
⋅
CC
os
V
. The SVR is referred back to the
out1
out1
)
p
= V
and V
⎞
⎠
is the output voltage with
sense2
m
. The CMR is referred
Parameter definitions
, then V
os
can be
13/26