Datasheet

LT1638/LT1639
9
16389fg
FREQUENCY (kHz)
OUTPUT IMPEDANCE (Ω)
10k
1k
100
10
1
0.1
0.1 10 100 1000
1638/39 G20
1
A
V
= 1
A
V
= 100
A
V
= 10
V
S
= ±2.5V
TYPICAL PERFORMANCE CHARACTERISTICS
PSRR vs Frequency
Output Impedance vs Frequency
LOAD RESISTANCE (kΩ)
1
GAIN BANDWIDTH PRODUCT (kHz)
PHASE MARGIN (DEG)
1500
1400
1300
1200
1100
1000
900
800
10 100
1638/39 G17
60
50
40
30
20
10
0
–10
V
S
= ±2.5V
A
V
= –1
R
F
= R
G
= 100k
f = 1kHz
PHASE MARGIN
GAIN BANDWIDTH
PRODUCT
Gain and Phase Shift vs
Frequency
FREQUENCY (kHz)
1
10
GAIN (dB)
PHASE SHIFT (DEG)
20
30
40
50
10 100 1000
1638/39 G12
0
–10
–20
80
60
70
40
50
60
70
80
30
20
10
0
90
100
V
S
= ±2.5V
PHASE
GAIN
FREQUENCY (kHz)
POWER SUPPLY REJECTION RATIO (dB)
90
80
70
60
50
40
30
20
10
0
–10
1 10 100 1000
1638/39 G16
V
S
= ±2.5V
POSITIVE SUPPLY
NEGATIVE SUPPLY
TEMPERATURE (°C)
–50
SLEW RATE (V/μs)
0
50
75
1638/39 G14
–25
25
100
125
RISING, V
S
= ±15V
RISING, V
S
= ±2.5V
FALLING, V
S
= ±2.5V
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
FALLING, V
S
= ±15V
Slew Rate vs Temperature
Gain Bandwidth Product and
Phase Margin vs Supply Voltage
TOTAL SUPPLY VOLTAGE (V)
0
1000
GAIN BANDWIDTH PRODUCT (kHz)
1200
1500
10
20
25 45
1638/39 G15
1100
1400
1300
PHASE MARGIN (DEG)
10
30
60
20
50
40
515
30
35
40
PHASE MARGIN
GAIN BANDWIDTH
Gain Bandwidth Product and
Phase Margin vs Load Resistance
FREQUENCY (kHz)
COMMON MODE REJECTION RATIO (dB)
120
110
100
90
80
70
60
50
40
30
20
1 10 100 1000
1638/39 G18
V
S
= ±15V
CMRR vs Frequency
FREQUENCY (kHz)
0.1
CHANNEL SEPARATION (dB)
130
120
110
100
90
80
70
60
1 10 100
1638/39 G19
V
S
= ±15V
Channel Separation vs Frequency
TEMPERATURE (°C)
–50
GAIN BANDWIDTH PRODUCT (kHz)
1500
1400
1300
1200
1100
1000
900
800
0
50
75
1638/39 G13
–25
25
100
125
V
S
= ±15V
V
S
= ±2.5V
f = 1kHz
Gain Bandwidth Product vs
Temperature