Texas Instruments TRIS TMS37122 - 4.2.4 IC Characteristics over Operating Free-air Temperature Range; 4.2.4.1 General IC Characteristics; 4.2.4.2 Input Capacitances; 4.2.4.3 Modulation Capacitor

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August ’01 Chapter 4. Product Specification Data
4.2.4 IC Characteristics over Operating Free-air Temperature Range
4.2.4.1 General IC Characteristics
4.2.4.2 Input Capacitances
4.2.4.3 Modulation Capacitor
Parameter Sign Note Min Nom Max Unit
Package
16-pin
TSSOP
Parameter Sign Note Min Nom Max Unit
Effective Input
Capacitance
(CRFx=CIx+ dCI/dV)
CRF1
VCL = 5 V
25 ºC
CT = off
19 23 27 pF
Input Capacitance CI1
VCL<0.5 V
25 ºC,
CT = off
26 pF
Effective Input
Capacitance
(CRFx=CIx+ dCI/dV)
CRF2
CRF3
VCL = 5 V
25 ºC
CT = off
12 16 20 pF
Input Capacitance
CI2
CI3
VCL<0.5 V
25 ºC,
CT = off
19 pF
Temperature Coefficient of
CI1, C2
dCI/dT -0.1 pF/K
Input Capacitance Change
(CT=off)
dCI/dV
VCL = 3...5V
25 ºC
-0.4 -0.5 pF/V
Input Capacitance Change
(CT=on)
dCI/dV
VCL = 3...5V
25 ºC
-0.05 -0.1 pF/V
Input Capacitance Change
(CT=off)
dCI/dV
VCL = 3...5V
25 ºC
-1.1 pF/V
Input Capacitance Change
(CT=on)
dCI/dV
VC L= 3...5V
25 ºC
-0.2 pF/V
Parameter Sign Note Min Nom Max Unit
Modulation Capacitor CM 25 ºC 89.2 105 120.8 pF
Voltage Coefficient of CM dCM/dV 25 ºC 0.2 pF/V
Temperature Coefficient of CM dCM/dT 0.02 pF/K