6
LT2078/LT 2079
20789fa
TIME (SEC)
0
NOISE
VOLTAGE
(0.4
V/DIV)
8
LT2078/79 TPC04
2
4
6
10
CHANNEL A
CHANNEL B
TA = 25°C
VS = ±2.5V
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Noise Spectrum
0.01Hz to 10Hz Noise
TIME (SEC)
0
NOISE
VOLTAGE
(0.4
V/DIV)
80
LT2078/79 TPC05
20
40
60
100
CHANNEL B
TA = 25°C
VS = ±2.5V
CHANNEL A
0.4
V
FREQUENCY (Hz)
0.1
1
100
10
VOLTAGE
NOISE
DENSITY
(nV/
√
Hz)
CURRENT
NOISE
DENSITY
(fA/
√
Hz)
100
30
1000
300
10
1000
LT2078/79 TPC06
CURRENT
NOISE
VOLTAGE
NOISE
1/f CORNER
0.7Hz
TA = 25°C
VS = ±2.5V
(AT VS = ±15V
VOLTAGE NOISE
IS 4% LESS
CURRENT NOISE
IS UNCHANGED)
Warm-Up Drift
Long Term Stability of Two
Representative Units (LT2078)
10Hz Voltage Noise Distribution
VOLTAGE NOISE DENSITY (nV/
√Hz)
25
LT2078/79 TPC07
30
35
40
PERCENT
OF
UNITS
35
30
25
20
15
10
5
0
TA = 25°C
VS = ±2.5V
TIME AFTER POWER-ON (MINUTES)
0
CHANGE
IN
OFFSET
VOLTAGE
(
V)
LT2078/79 TPC09
12
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
3
TA = 25°C
VS = ±15V
WARM UP DRIFT
AT VS = 5V, 0V IS
IMMEASURABLY LOW
LT2079
LT2078
TIME (MONTHS)
0
OFFSET
VOLTAGE
CHANGE
(
V)
123
4
LT2078/79 TPC08
5
15
10
5
0
–5
–10
–15
TA = 25°C, VS = 5V, 0V
VCM = 0.1V
1A
2B
1B
2A
Output Voltage Swing vs
Load Current
Output Saturation vs Temperature
vs Sink Current
Minimum Supply Voltage
POSITIVE SUPPLY VOLTAGE (V)
0
INPUT
OFFSET
VOLTAGE
(
V)
100
0
–100
–200
–300
–400
–500
LT2078/79 TPC10
1
23
V– = 0V
–0.1V
≤ VCM ≤ 0.4V
125
°C
–55
°C
0
°C
25
°C
70
°C
NONFUNCTIONAL
TEMPERATURE (
°C)
–50
SATURATION
VOLTAGE
(mV)
1000
100
10
1
–25
125
LT2078/79 TPC11
0
25
50
100
75
ISINK = 2mA
ISINK = 1mA
ISINK = 100A
ISINK = 1A
NO LOAD
RL = 5k TO GND
ISINK = 10A
VS = 5V, 0V
SOURCING OR SINKING LOAD CURRENT (mA)
0.01
OUTPUT
VOLTAGE
SWING
(V)
V+
V+ – 1
V+ – 2
V– + 2
V– + 1
V–
10
LT2078/79 TPC11.5
0.1
1
125
°C
25
°C
–55
°C
125
°C
–55
°C
25
°C
0.1Hz to 10Hz Noise