TLC251 Datasheet, PDF (13/18 Pages) Texas Instruments – LinCMOSE PROGRAMMABLE LOW-POWER OPERATIONAL AMPLIFIERS

TLC251, TLC251A, TLC251B, TLC251Y
LinCMOS™ PROGRAMMABLE
LOW-POWER OPERATIONAL AMPLIFIERS
SLOS001E – JULY 1983 – REVISED AUGUST 1994
operating characteristics, V_DD = 5 V, T_A = 25°C
TLC251Y
PARAMETER
TEST CONDITIONS
HIGH-BIAS
MODE
MEDIUM-BIAS
MODE
MIN TYP MAX MIN TYP MAX
SR
Slew rate at
unity gain
RL†,
CL = 20 pF
VI(PP) = 1 V
VI(PP) = 2.5 V
3.6
2.9
0.43
0.40
Vn
Equivalent input
noise voltage
f = 1 kHz,
RS = 20 Ω
25
32
BOM
Maximum output
swing bandwidth
VO = VOH, CL = 20 pF,
RL = 10 kΩ
320
55
B1
Unity-gain
bandwidth
VI = 10 mV, CL = 20 pF
1700
525
φ_m
Phase margin
f = B1,
VI = 10 mV,
CL = 20 pF
46°
40°
† _{For high-bias mode, RL = 10 kΩ; for medium-bias mode, RL = 100 kΩ; and for low-bias mode, RL = 1 MΩ.}
LOW-BIAS
MODE
MIN TYP MAX
0.03
0.03
UNIT
V/µs
68
nV/√Hz
4.5
kHz
65
kHz
34°
PARAMETER MEASUREMENT INFORMATION
–
Input
+
BIAS
Low
Medium
High
RL
1 MΩ
100 kΩ
10 kΩ
CL = 100 pF
Output
RL
Figure 1. Unity-Gain Amplifier
IN –
–
IN +
+
N2
N1
Output
25 kΩ
GND
Figure 2. Input Offset Voltage Null Circuit
TYPICAL CHARACTERISTICS
Table of Graphs
IDD
AVD
Supply current
Large-signal differential voltage amplification
Phase shift
vs Bias-select voltage
vs Supply voltage
vs Free-air temperature
Low bias
vs Frequency
Medium bias vs Frequency
High bias vs Frequency
Low bias
vs Frequency
Medium bias vs Frequency
High bias vs Frequency
FIGURE
3
4
5
6
7
8
6
7
8
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