TLC271_01 Datasheet, PDF (67/82 Pages) Texas Instruments – LinCMOSE PROGRAMMABLE LOW-POWER OPERATIONAL AMPLIFIERS

(see Note A)
TLC271, TLC271A, TLC271B
LinCMOS PROGRAMMABLE LOW-POWER
OPERATIONAL AMPLIFIERS
SLOS090D – NOVEMBER 1987 – REVISED MARCH 2001
APPLICATION INFORMATION (MEDIUM-BIAS MODE)
5V
Gain Control
1 MΩ
1 µF
–+
100 kΩ
10 kΩ
0.1 µF
–+
1 kΩ
100 kΩ
ÏÏÏÏ _–
ÏÏÏÏ _TLC271
ÏÏÏÏ ₊
BIAS
ÏÏÏÏ_SELECT
ÏÏÏÏ_{2.5 V}
1 µF
+–
100 kΩ
NOTE A: Low to medium impedance dynamic mike
Figure 122. Microphone Preamplifier
10 MΩ
VDD
ÏÏÏÏ _–
ÏÏÏÏ _TLC271
ÏÏÏÏ ₊
BIAS
ÏÏÏÏ^SELECT
1 kΩ
15 nF ^{VDD / 2}
150 pF
ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ _VREF
VDD
–
TLC271
+
BIAS
SELECT
VDD / 2
VO
100 kΩ
NOTES: A. NOTES: VDD = 4 V to 15 V
B. Vref = 0 V to VDD – 2 V
Figure 123. Photo-Diode Amplifier With Ambient Light Rejection
VI
ÏÏÏÏÏ₊ÏÏÏÏÏ_–TLCÏÏÏÏÏ^527V1ÏÏÏÏÏ_BSEIAÏÏÏÏÏ_LSECT
IS
2N3821
2.5 V
R
NOTES: A. VI = 0 V TO 3 V
+ _B. IS
VI
R
Figure 124. Precision Low-Current Sink
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
67