TLC27L1 Datasheet, PDF (19/32 Pages) Texas Instruments – LinCMOSE LOW-POWER OPERATIONAL AMPLIFIERS

TLC27L1, TLC27L1A, TLC27L1B
LinCMOS™ LOW-POWER
OPERATIONAL AMPLIFIERS
SLOS154 – DECEMBER 1995
TYPICAL CHARACTERISTICS^†
PHASE MARGIN
EQUIVALENT INPUT NOISE VOLTAGE
vs
37°
35°
CAPACITIVE LOAD
VDD = 5 mV
VI = 10 mV
TA = 25°C
See Figure 35
ÁÁ 200
ÁÁ ₁₇₅
ÁÁÁÁ ₁₅₀
33°
vs
FREQUENCY
ÁÁÁÁÁ VDD = 5 V
RS = 20Ω
ÁÁÁÁÁ _{TA = 25°C}
ÁÁÏÏÁÁÏÏÁÁÏÏÁÁÏÏÁÁÏÏ ^{See Figure 34}
125
31°
100
ÁÁÁÁ29°
75
50
27°
25
25°
0 10 20 30 40 50 60 70 80 90 100
0
1
CL – Capacitive Load – pF
Figure 31
10
100
f – Frequency – Hz
Figure 32
1000
† _{Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.}
PARAMETER MEASUREMENT INFORMATION
single-supply versus split-supply test circuits
Because the TLC27L1 is optimized for single-supply operation, circuit configurations used for the various tests
often present some inconvenience since the input signal, in many cases, must be offset from ground. This
inconvenience can be avoided by testing the device with split supplies and the output load tied to the negative
rail. A comparison of single-supply versus split-supply test circuits is shown below. The use of either circuit gives
the same result.
VDD
VDD ₊
VO
VO
VI
CL
RL
VI
CL
RL
(a) SINGLE SUPPLY
VDD _–
(b) SPLIT SUPPLY
Figure 33. Unity-Gain Amplifier
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