Datasheet

LT1722/LT1723/LT1724
8
172234fb
TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current
vs Temperature Input Noise Spectral Density
Open-Loop Gain
vs Resistive Load
Total Noise
vs Unmatched Source Resistance Warm-Up Drift vs Time V
OS
Shift vs V
CM
and V
S
Supply Current vs Temperature
Input Common Mode Range
vs Supply Voltage
Input Bias Current
vs Common Mode Voltage
TEMPERATURE (°C)
–50
SUPPLY CURRENT (mA)
4.0
4.5
5.0
25 75
1723 G01
3.5
3.0
–25 0
50 100 125
2.5
2.0
PER AMPLIFIER
V
S
= 5V
V
S
= ±5V
SUPPLY VOLTAGE (±V)
0
INPUT COMMON MODE RANGE (V)
2
4
5
1723 G02
13
6
7
0.5
V
+
–0.5
–1.0
–1.5
–1.2
2.0
1.5
1.0
0.5
V
–
(V
OS
) < 500µV
T
A
= 25°C
INPUT COMMON MODE VOLTAGE (V)
–5
INPUT BIAS CURRENT (nA)
400
300
200
100
0
–100
–200
–300
–400
3
1723 G03
–3 –1 1 52–4 –2 0 4
V
S
= ±5V
T
A
= –45°C
T
A
= 125°C
T
A
= 25°C
T
A
= 85°C
TEMPERATURE (°C)
–50
INPUT BIAS CURRENT (nA)
20
40
60
25 75
1723 G04
0
–20
–25 0
50
I
B
–
I
B
–
I
B
+
I
B
+
100 125
–40
–60
V
S
= ±5V
V
S
= 5V
FREQUENCY (kHz)
0.01 0.1
1
10
100
0.1
1
10
i
n
1 10 100
1723 G05
INPUT VOLTAGE NOISE (nV/√Hz)
INPUT CURRENT NOISE (pA/√Hz)
e
n
LOAD RESISTANCE ()
100
74.0
OPEN-LOOP GAIN (dB)
76.5
79.0
81.5
84.0
89.0
1000 10000
1723 G06
86.5
T
A
= 25°C
V
S
= ±5V, V
O
= ±3V
V
S
= ±2.5V, V
O
= ±1V
SOURCE RESISTANCE, R
S
(k)
1
TOTAL NOISE VOLTAGE (nV/√Hz)
10
0.01 1 10 100
1723 G07
0.1
0.1
100
V
S
= ±5V
T
A
= 25°C
f = 10kHz
TOTAL NOISE
RESISTOR NOISE
+
–
R
S
TIME AFTER POWER-UP (SEC)
0
OFFSET VOLTAGE DRIFT (µV)
10
20
30
5
15
25
20 40 60 80
1723 G08
10010030507090
LT1722S8
T
A
= 25°C
TYPICAL DATA
V
S
= ±5V
V
S
= ±2.5V
COMMON MODE VOLTAGE (V)
–300
V
OS
SHIFT (µV)
–100
100
300
–200
0
200
–3 –1 1 3
1723 G09
5–4–5 –2 0 2 4
V
S
= ±6.3V
V
S
= ±5V
V
S
= ±4V
V
S
= ±3V
V
S
= ±2.5V
T
A
= 25°C
TYPICAL PART
V
S
= ±6V