Datasheet

5
LT2078/LT2079
20789fa
LT2078AC/LT2079AC LT2078C/LT2079C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
OS
Input Offset Voltage LT2078 ● 70 330 90 460 µV
LT2079 ● 80 410 100 540 µV
∆V
OS
Input Offset Voltage Drift LT2078 ● 0.5 1.8 0.6 2.5 µV/°C
∆T (Note 6) LT2079 ● 0.6 3.0 0.7 3.8 µV/°C
I
OS
Input Offset Current ● 0.06 0.35 0.06 0.50 nA
I
B
Input Bias Current ● 69 611 nA
A
VOL
Large-Signal Voltage Gain V
O
= ±10V, R
L
= 5k ● 300 1200 250 1200 V/mV
CMRR Common Mode Rejection Ratio V
CM
= 13V, –15V ● 95 112 92 112 dB
PSRR Power Supply Rejection Ratio V
S
= 5V, 0V to ±18V ● 98 112 95 112 dB
Maximum Output Voltage Swing R
L
= 5k ● ±11.0 ±13.6 ±11.0 ±13.6 V
I
S
Supply Current per Amplifier ● 49 73 50 85 µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Typical parameters are defined as the 60% yield of parameter
distributions of individual amplifiers, i.e., out of 100 LT2079s (or 100
LT2078s) typically 240 op amps (or 120) will be better than the indicated
specification.
Note 3: This parameter is tested on a sample basis only. All noise
parameters are tested with V
S
= ±2.5V, V
O
= 0V.
Note 4: This parameter is guaranteed by design and is not tested.
Note 5: Power supply rejection ratio is measured at the minimum supply
voltage. The op amps actually work at 1.8V supply but with a typical offset
skew of –300µV.
Note 6: This parameter is not 100% tested.
Note 7: The LT2078C/LT2079C are designed, characterized and expected
to meet the industrial temperature limits, but are not tested at –40°C and
85°C. I-grade parts are guaranteed.
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= ±15V, 0°C ≤ T
A
≤ 70°C, unless otherwise noted (Note 7).
Input Bias Current vs
Common Mode Voltage
COMMON MODE VOLTAGE (V)
–1
INPUT BIAS CURRENT (nA)
0
–2
–4
–6
–8
–10
–12
0123
LT2078/79 • TPC03
4
T
A
= 125°C
T
A
= –55°C
V
S
= 5V, 0V
T
A
= 25°C
Input Bias and Offset Currents vs
Temperature
TEMPERATURE (°C)
–50
BIAS CURRENT (nA) OFFSET CURRENT (pA)
100
50
0
–5
–6
–7
0
50
75
LT2078/79 • TPC02
–25
25
100
125
I
OS
I
B
V
S
= 5V, 0V TO ±15V
Distribution of Offset Voltage
Drift with Temperature
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
PERCENT OF UNITS (%)
25
20
15
10
5
0
LT2078/79 • TPC01
–2
–1
0 1
2
V
S
= 5V, 0V
V
CM
= 0.1V
80 LT2078'S
25 LT2079'S
= 260 OP AMPS