LT1014DSW Datasheet, PDF (9/26 Pages) Linear Integrated Systems – Single Supply Operation Input Voltage Range Extends to Ground

typical performance characteristics
LT1013/LT1014
Output Short-Circuit Current
vs Time
40
–55°C
V_S = ±15V
30
25°C
20
125°C
10
0
–10
125°C
Voltage Gain vs Load Resistance
10M
T_A = 25°C, V_S = ±15V
T_A = –55°C, V_S = ±15V
T_A = 125°C, V_S = ±15V
T_A = –55°C, V_S = 5V, 0V
T_A = 25°C, V_S = 5V, 0V
1M
T_A = 125°C, V_S = 5V, 0V
Voltage Gain vs Frequency
140
T_A = 25°C
120
C_L = 100pF
100
80
V_S = 5V, 0V V_S = ±15V
60
40
–20
25°C
–30
–55°C
–40
0
1
2
3
TIME FROM OUTPUT SHORT TO GROUND (MINUTES)
1013/14 TPC19
100k
100
V_O = ±10V WITH V_S = ±15V
V_O = 20mV TO 3.5V
WITH V_S = 5V, 0V
1k
10k
LOAD RESISTANCE TO GROUND (Ω)
1013/14 TPC20
20
0
–20
0.01 0.1 1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1013/14 TPC21
Gain, Phase vs Frequency
Channel Separation
vs Frequency
80
T_A = 25°C
20
PHASE
V_CM = 0V
C_L = 100pF
100
±15V
120
10
±15V
GAIN
140
160
0
5V, 0V
5V, 0V
180
200
–10
160
V_S = ±15V
T_A = 25°C
140
V_IN = 20Vp-p to 5kHz
R_L = 2k
LIMITED BY
120 THERMAL
INTERACTION
R_S = 100Ω
R_S = 1kΩ
100
LIMITED BY
80
PIN TO PIN
CAPACITANCE
0.1
0.3
1
3
10
FREQUENCY (MHz)
1013/14 TPC22
60
10
100
1k
10k 100k 1M
FREQUENCY (Hz)
1013/14 TPC23
applications information
Single Supply Operation
The LT1013/LT1014 are fully specified for single supply
operation, i.e., when the negative supply is 0V. Input
common mode range includes ground; the output swings
within a few millivolts of ground. Single supply operation,
however, can create special difficulties, both at the input
and at the output. The LT1013/LT1014 have specific circuitry
which addresses these problems.
At the input, the driving signal can fall below 0V—in-
advertently or on a transient basis. If the input is more
than a few hundred millivolts below ground, two distinct
problems can occur on previous single supply designs,
such as the LM124, LM158, OP-20, OP-21, OP-220,
OP‑221, OP‑420:
a) When the input is more than a diode drop below
ground, unlimited current will flow from the substrate
(V ^– terminal) to the input. This can destroy the unit. On
the LT1013/LT1014, the 400Ω resistors, in series with the
input (see Schematic Diagram), protect the devices even
when the input is 5V below ground.
10134fd