datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

O102 View Datasheet(PDF) - STMicroelectronics

Part Name
Description
View to exact match
O102
ST-Microelectronics
STMicroelectronics ST-Microelectronics
O102 Datasheet PDF : 18 Pages
First Prev 11 12 13 14 15 16 17 18
TSC101
4
Parameter definitions
Parameter definitions
4.1
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 Vp and Vm. The CMR is referred
back to the input so that its effect can be compared with the applied differential signal. The
CMR is defined by the formula:
CMR
=
20
log --------Δ----V----o---u---t--------
ΔVicm Av
4.2
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 VCC. The SVR is referred back to the
input so that its effect can be compared with the applied differential signal. The SVR is
defined by the formula:
SVR = 20 log -Δ----V---Δ-C---VC----o---u---t-A----v--
4.3
Gain (Av) and input offset voltage (Vos)
The input offset voltage is defined as the intersection between the linear regression of the
Vout versus Vsense curve with the X-axis (see Figure 20). If Vout1 is the output voltage with
Vsense=Vsense1=50mV and Vout2 is the output voltage with Vsense=Vsense2=5mV, then Vos
can be calculated with the following formula:
Vos
=
Vsense1
-V----s--e---n---s---e---1---------V----s---e--n---s---e---2-
Vout1 Vout2
Vou
t1
The amplification gain Av is defined as the ratio between output voltage and input differential
voltage:
Av = ----V----o---u---t---
Vsense
Doc ID 13313 Rev 3
11/18
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]