LT1251 Ver la hoja de datos (PDF) - Linear Technology
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LT1251 Datasheet PDF : 24 Pages
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LT1251/LT1256
SIG AL A PLIFIER AC CHARACTERISTICS
0°C ≤ TA ≤ 70°C, VS = ±5V, VIN = 1VRMS, f = 1kHz, AVMAX = 1, RF1 = RF2 = 1.5k, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND,
unless otherwise noted.
SYMBOL
SR
BW
PARAMETER
Gain Supply Rejection
External Resistor Gain
50% Input 1
Slew Rate
Control Feedthrough
Full Power Bandwidth
Small-Signal Bandwidth
Differential Gain (Notes 4,5)
Differential Phase (Notes 4,5)
THD
Total Harmonic Distortion
tr, tf
Rise Time, Fall Time
OS
Overshoot
tPD
Propagation Delay
tS
Settling Time
CONDITIONS
VC = 1.25V, VS = ±5V to ±15V
Pins 5,10 = Open, External 5k Resistors
from Pins 4,11 to Ground, VC = 1.25V
VIN = ±2.5V, VO at ±2V, RL = 150Ω
VC = 1.25VDC + 2.5VP-P at 1kHz
VO = 1VRMS
VS = ±5V
VS = ±15V
Control = 0% or 100%
Control = 25% or 75%
Control = 0% or 100%
Control = 25% or 75%
Gain = 100%
Gain = 50%
Gain = 10%
10% to 90%, VO = 100mV
VO = 100mV
VO = 100mV
0.1%, ∆VO = 2V
MIN TYP MAX
q
0.03 0.10
q
45
55
q 150
300
2.5
20
30
40
0.02
0.90
0.02
0.55
0.002
0.015
0.4
11
3
10
65
UNITS
%/ V
%
V/ µs
mVP-P
MHz
MHz
MHz
%
%
DEG
DEG
%
%
%
ns
%
ns
ns
SIG AL A PLIFIER DC CHARACTERISTICS
0°C ≤ TA ≤ 70°C, VS = ±5V, VCM = 0V, VFS = 2.5V, IC = IFS = NULL = Open, Pins 5,10 = GND, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
VOS
Input Offset Voltage
Either Input
q
Difference Between Inputs
q
Input Offset Voltage Drift
IIN+
Noninverting Input Bias Current
IIN–
Inverting Input Bias Current
Inverting Input Bias Current Null Change
Either Input
q
Either Input
q
Difference Between Inputs
q
Null (Pin 6) Open to V –
q
en
+in
–in
RIN
CIN
CMRR
PSRR
Input Noise Voltage Density
f = 1kHz
Noninverting Input Noise Current Density
f = 1kHz
Inverting Input Noise Current Density
f = 1kHz
Input Resistance
Either Noninverting Input
q
Input Capacitance
Either Noninverting Input
q
Input Voltage Range
VS = ±5V
q
VS = 5V
q
Common Mode Rejection Ratio
VCM = – 3V to 3V
q
VS = 5V, VCM = 2V to 3V, VO = 2.5V q
Inverting Input Current Common Mode Rejection
VCM = – 3V to 3V
q
VS = 5V, VCM = 2V to 3V, VO = 2.5V q
Power Supply Rejection Ratio
VS = ±5V to ±15V
q
Noninverting Input Current Power Supply Rejection VS = ±5V to ±15V
q
Inverting Input Current Power Supply Rejection
VS = ±5V to ±15V
q
MIN
–3
– 2.5
– 30
–1
– 280
5
±3
2
55
50
70
TYP MAX
2
5
1
3
10
0.5
2.5
10
30
0.5
1
– 170 – 60
2.7
1.5
29
17
1.5
±3.2
3
61
57
0.07 0.25
0.17 0.70
76
30
100
30
200
UNITS
mV
mV
µV/°C
µA
µA
µA
µA
nV/√Hz
pA/√Hz
pA/√Hz
MΩ
pF
V
V
dB
dB
µA/ V
µA/ V
dB
nA / V
nA / V
3
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