TLE2682 Datasheet, PDF (28/49 Pages) Texas Instruments – HIGH-SPEED JFET-INPUT DUAL OPERATIONAL AMPLIFIER WITH SWITCHED-CAPACITOR VOLTAGE CONVERTER

TLE2682
HIGHĆSPEED JFETĆINPUT DUAL OPERATIONAL AMPLIFIER
WITH SWITCHEDĆCAPACITOR VOLTAGE CONVERTER
SLOS127 − JUNE 1993
TYPICAL CHARACTERISTICS^†
SWITCHED-CAPACITOR SECTION
AVERAGE SUPPLY CURRENT
vs
OUTPUT CURRENT
140
120
100
OUTPUT VOLTAGE LOSS
vs
INPUT CAPACITANCE
1.4
1.2
IO = 100 mA
1.0
80
60
40
20
0
0
20
40
60
80
100
IO − Output Current − mA
Figure 63
0.8
IO = 50 mA
0.6
IO = 10 mA
0.4
0.2
0
0
Inverter Configuration
COUT = 100-µF Tantalum
fosc = 25 kHz
10 20 30 40 50 60 70 80 90 100
CIN − Input Capacitance − µF
Figure 64
OUTPUT VOLTAGE LOSS
vs
OSCILLATOR FREQUENCY
2.5
Inverter Configuration
2.25 CIN = 10-µF Tantalum
COUT = 100-µF Tantalum
2
1.75
1.5
IO = 100 mA
1.25
1
IO = 50 mA
0.75
0.5
IO = 10 mA
0.25
0
1
2
4
7 10
20 40
100
fosc − Oscillator Frequency − kHz
Figure 65
OUTPUT VOLTAGE LOSS
vs
OSCILLATOR FREQUENCY
2.5
Inverter Configuration
2.25 CIN = 100-µF Tantalum
COUT = 100-µF Tantalum
2
1.75
1.5
1.25
IO = 100 mA
1
IO = 50 mA
0.75
0.5
0.25
IO = 10 mA
0
1
2
4
10
20 40
100
fosc − Oscillator Frequency − kHz
Figure 66
† _{Data applies to the switched-capacitor block only. Amplifier block is not connected.}
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