LT1991 Linear Technology, LT1991 Datasheet - Page 6

• Manufacturer Part Number: LT1991
• Description: Precision / 100uA Gain Selectable Amplifier
• Manufacturer: Linear Technology

LT1991
ELECTRICAL CHARACTERISTICS
SYMBOL
PSRR
V
I
BW
GBWP
t
t
SR
I
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The P3/M3 and P9/M9 inputs should not be taken more than 0.2V
beyond the supply rails. The P1/M1 inputs can withstand ±60V if P9/M9
are grounded and V
“High Voltage CM Difference Amplifi ers”).
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum ratings.
Note 4: Both the LT1991C and LT1991I are guaranteed functional over the
–40°C to 85°C temperature range. The LTC1991H is guaranteed functional
over the –40°C to 125°C temperature range.
Note 5: The LT1991C is guaranteed to meet the specifi ed performance
from 0°C to 70°C and is designed, characterized and expected to meet
specifi ed performance from –40°C to 85°C but is not tested or QA sampled
at these temperatures. The LT1991I is guaranteed to meet specifi ed
performance from –40°C to 85°C. The LT1991H is guaranteed to meet
specifi ed performance from –40°C to 125°C.
temperature range of –40°C to 125°C for H-grade parts, otherwise specifi cations are at T
V
6
SC
r
s
s
, t
OUT
S
f
= 5V, 0V or ±15V; V
S
= ±15V (see Applications Information section about
PARAMETER
Power Supply Rejection Ratio
Minimum Supply Voltage
Output Voltage Swing (to Either Rail)
Output Short-Circuit Current (Sourcing)
Output Short-Circuit Current (Sinking)
–3dB Bandwidth
Op Amp Gain Bandwidth Product
Rise Time, Fall Time
Settling Time to 0.01%
Slew Rate
Supply Current
CM
= V
REF
= half supply, unless otherwise noted.
CONDITIONS
V
No Load
V
V
V
1mA Load
V
V
V
Drive Output Positive;
Short Output to Ground
Drive Output Negative;
Short Output to V
G = 1
G = 3
G = 9
f = 10kHz
G = 1; 0.1V Step; 10% to 90%
G = 9; 0.1V Step; 10% to 90%
G = 1; V
G = 1; V
G = 1; V
G = 1; V
V
V
V
V
S
S
S
S
S
S
S
S
S
S
S
= ±1.35V to ±18V (Note 8)
= 5V, 0V
= 5V, 0V
= ±15V
= 5V, 0V
= 5V, 0V
= ±15V
= 5V, 0V; V
= ±15V; V
= 5V, 0V
= ±15V
The
S
S
S
S
l
= 5V, 0V; 2V Step
= 5V, 0V; –2V Step
= ±15V, 10V Step
= ±15V, –10V Step
denotes the specifi cations which apply over the operating
OUT
OUT
Note 6: This parameter is not 100% tested.
Note 7: Input voltage range is guaranteed by the CMRR test at V
For the other voltages, this parameter is guaranteed by design and through
correlation with the ±15V test. See the Applications Information section to
determine the valid input voltage range under various operating conditions.
Note 8: Offset voltage, offset voltage drift and PSRR are defi ned as
referred to the internal op amp. You can calculate output offset as follows.
In the case of balanced source resistance, V
+ I
resistance at the op amp positive and negative terminal respectively.
Note 9: Applies to resistors that are connected to the inverting inputs.
Resistor matching is not tested directly, but is guaranteed by the gain
error test.
Note 10: Input impedance is tested by a combination of direct
measurements and correlation to the CMRR and gain error tests.
Note 11: I
= ±10V; V
S
= 1V to 4V
OS
or Midsupply
• 450k + I
B
MEAS
and I
B
= ±5V
OS
• 450k • (1– R
are tested at V
A
= 25°C. Difference amplifi er confi guration,
l
l
l
l
l
l
l
l
l
l
l
l
P
/R
S
N
) where R
= 5V, 0V only.
0.06
0.08
MIN
105
8
4
8
4
www.DataSheet4U.com
OS,OUT
P
0.12
0.12
TYP
and R
135
150
110
560
114
100
130
2.4
40
12
21
78
40
42
48
74
3
8
= V
N
OS
are the total
• NOISEGAIN
MAX
120
225
300
340
110
180
160
250
2.7
55
75
S
= ±15V.
UNITS
1991fg
V/μs
V/μs
kHz
kHz
kHz
kHz
mV
mV
mV
mV
mV
mV
mA
mA
mA
mA
dB
μA
μA
μA
μA
μs
μs
μs
μs
μs
μs
V