Datasheet

4
LT1635
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Feedback Sense Voltage Voltage at Pin 1 with Pin 1 Connected ● 189 200 211 mV
to Pin 8 (Note 6)
TC V
REF
Reference Drift (Note 4) ● 40 120 ppm/°C
Feedback Current Current into Pin 8 3.5 10 nA
● 5.0 15 nA
Line Regulation 0 ≤ I
REF
≤ 1mA, V
REF
= 200mV
V
S
= ±0.6V to ±5V 20 100 ppm/V
V
S
= ±0.65V to ±5V (Note 3) ● 30 200 ppm/V
Load Regulation I
REF
= 0 to 1mA 150 300 ppm/mA
● 200 500 ppm/mA
Reference Amplifier Gain V
O
= 0.2V to 8.5V 45 90 V/mV
V
S
= 10V, 0V ● 25 50 V/mV
±5V OP AMP: The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are
at T
A
= 25°C. V
S
= ±5V; V
CM
= V
OUT
= 0V, unless otherwise noted. (Note 2)
±5V REFERENCE: The ● denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. V
S
= ±5V, unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
A
VOL
Large-Signal Voltage Gain V
O
= –4.5V to 4.5V, No Load ● 175 300 V/mV
V
O
= –4.5V to 4.5V, R
L
= 1.1k ● 15 100 V/mV
V
O
= –4.5V to 4.5V, R
L
= 500Ω ● 10 60 V/mV
V
O
Output Voltage Swing V
S
= ±5V, No Load ● ±4.975 ±4.985 mV
V
S
= ±5V, I
SINK
= 5mA ● ±4.65 ±4.75 mV
V
S
= ±5V, I
SINK
= 10mA ● ±4.5 ±4.6 mV
I
SC
Short-Circuit Current V
S
= ±5V ±20 ±40 mA
PSRR Power Supply Rejection Ratio V
S
= ±1V to ±6V, V
CM
= V
O
= 0V 90 100 dB
● 88 98 dB
I
S
Supply Current 135 215 µA
● 160 280 µA
GBW Gain Bandwidth Product f = 1kHz 175 kHz
SR Slew Rate A
V
= –1, R
L
= ∞ 0.05 V/µs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be imparied.
Note 2: The LT1635C is guaranteed to operate over the commercial
temperature range of 0°C to 70°C. It is designed, characterized and
expected to meet these extended temperature limits, but is not tested at
–40°C and 85°C. The LT1635I is guaranteed to meet the industrial
temperature range.
Note 3: The LT1635 op amp operates on a 1.2V supply over the full
industrial temperature range with an input common mode voltage of 0V to
0.2V. The minimum supply voltage for the reference to operate properly
over this temperature range is 1.3V.
Note 4: This parameter is not 100% tested. Temperature coefficient is
measured by dividing the change in output voltage by specified
temperature range.
Note 5: Shunt gain defines the operation in floating applications when the
output is connected to the V
+
terminal and input common mode is
referred to V
–
.
Note 6: If part is stored outside of the specified temperature range, the
output may shift due to hysteresis.
ELECTRICAL CHARACTERISTICS