LTC1250_05 Datasheet, PDF (5/12 Pages) Linear Technology – Very Low Noise Zero-Drift Bridge Amplifier

TYPICAL PERFOR A CE CHARACTERISTICS
LTC1250
Transient Response
1µs/DIV
A_V = 1, R_L = 100k, C_L = 50pF, V_S = ±5V
Output Swing vs Output Current,
±5V Supply
5
4 ^{VS = ±5V}
3
2
1
0
–1
–2
–3
–4
–5
0.01
0.1
1
OUTPUT CURRENT (mA)
10
1250 G16
Output Swing vs Load
Resistance, Dual Supplies
10
9
8
V_S = ±8V
R_L TO GND
7
6
5
V_S = ±5V
4
3
V_S = ±2.5V
2
NEGATIVE SWING
1
POSITIVE SWING
0
0 1 2 3 4 5 6 7 8 9 10
LOAD RESISTANCE (kΩ)
1250 G14
Output Swing vs Output Current,
Single 5V Supply
6
V_S = SINGLE 5V
5
4
3
2
1
0
0.01
0.1
1
OUTPUT CURRENT (mA)
10
1250 G17
Output Voltage Swing vs Load
Resistance, Single Supply
18
16
V_S = 16V
14
12
V_S = 10V
10
8
6
V_S = 5V
4
2
V^– = GND
R_L TO GND
0
0 1 2 3 4 5 6 7 8 9 10
LOAD RESISTANCE (kΩ)
1250 G15
Short-Circuit Current
vs Temperature
40
V_S = ±15V
30
20
V_OUT = V ^–
10
0
–10
– 20
V_OUT = V ⁺
– 30
– 40
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1250 G18
TEST CIRCUITS
Offset Test Circuit
100pF
100k
5V
2_– 7
10Ω
LTC1250
6
OUTPUT
3₊
4
–5V
1250 TC01
DC to 10Hz Noise Test Circuit
100pF
(for DC to 1Hz Multiply All Capacitor Values by 10)
100k
5V
5V
2_– 7
10Ω
LTC1250
3₊
4
6
800k
2
–⁸
1/2
3
LT1057
+
4
1
800k
0.04µF ⁶ _–
800k
1/2
LT1057
5₊
7
OUTPUT
–5V
0.02µF
–5V
0.01µF
1250 TC02
1250fb
5