LT1498/LT1499
14989fg
12
ELECTRICAL CHARACTERISTICS
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: A heat sink may be required to keep the junction temperature
below the absolute maximum rating when the output is shorted
indefi nitely.
Note 3: This parameter is not 100% tested.
Note 4: The LT1498C/LT1499C are guaranteed to meet specifi ed
performance from 0°C to 70°C. The LT1498C/LT1499C are designed,
characterized and expected to meet specifi ed performance from –40°C
to 85°C but are not tested or QA sampled at these temperatures. The
LT1498I/LT1499I are guaranteed to meet specifi ed performance from
–40°C to 85°C. The LT1498H/LT1499H are guaranteed to meet specifi ed
performance from –40°C to 125°C. The LT1498MP is guaranteed to meet
specifi ed performance from –55°C to 125°C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage V
CM
= V
+
– 0.5V
V
CM
= V
–
+ 0.5V
l
l
350
350
1300
1300
μV
μV
V
OS
TC Input Offset Voltage Drift (Note 3)
V
CM
= V
+
– 0.5V
l
l
1.0
2.0
μV/°C
μV/°C
ΔV
OS
Input Offset Voltage Shift V
CM
= V
–
+ 0.5V to V
+
– 0.5V
l
250 1500 μV
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
–
+ 0.5V, V
+
– 0.5V (Note 5)
l
400 2200 μV
I
B
Input Bias Current V
CM
= V
+
– 0.5V
V
CM
= V
–
+ 0.5V
l
l
0
–1200
500
–500
1200
0
nA
nA
ΔI
B
Input Bias Current Shift V
CM
= V
–
+ 0.5V to V
+
– 0.5V
l
1000 2400 nA
Input Bias Current Match (Channel-to-Channel) V
CM
= V
+
– 0.5V (Note 5)
V
CM
= V
–
+ 0.5V (Note 5)
l
l
0
–400
40
–40
400
0
nA
nA
I
OS
Input Offset Current V
CM
= V
+
– 0.5V
V
CM
= V
–
+ 0.5V
l
l
40
40
300
300
nA
nA
ΔI
OS
Input Offset Current Shift V
CM
= V
–
+ 0.5V to V
+
– 0.5V
l
80 600 nA
A
VOL
Large-Signal Voltage Gain V
O
= –14.5V to 14.5V, R
L
= 10k
l
40 400 V/mV
Channel Separation V
O
= –10V to 10V, R
L
= 2k
l
110 120 dB
CMRR Common Mode Rejection Ratio V
CM
= V
–
+ 0.5V to V
+
– 0.5V
l
86 100 dB
CMRR Match (Channel-to-Channel) (Note 5) V
CM
= V
–
+ 0.5V to V
+
– 0.5V
l
80 100 dB
PSRR Power Supply Rejection Ratio V
S
= ±5V to ±15V
l
88 100 dB
PSRR Match (Channel-to-Channel) (Note 5) V
S
= ±5V to ±15V
l
80 100 dB
V
OL
Output Voltage Swing (Low) (Note 6) No Load
I
SINK
= 0.5mA
I
SINK
= 10mA
l
l
l
25
50
275
75
100
520
mV
mV
mV
V
OH
Output Voltage Swing (High) (Note 6) No Load
I
SOURCE
= 0.5mA
I
SOURCE
= 10mA
l
l
l
3.5
65
500
20
120
1400
mV
mV
mV
I
SC
Short-Circuit Current
l
±7.5 ±12 mA
I
S
Supply Current per Amplifi er
l
2.5 3.2 mA
GBW Gain-Bandwidth Product (Note 7)
l
5.8 8.5 MHz
SR Slew Rate A
V
= –1, R
L
= Open, V
O
= ±10V
Measure at V
O
= ±5V
l
2.2 4.75 V/μs
The l denotes the specifi cations which apply over the temperature range
–55°C < T
A
< 125°C. V
S
= ±15V, V
CM
= 0V, V
OUT
= 0V, unless otherwise noted. (Note 4)
Note 5: Matching parameters are the difference between amplifi ers A and
D and between B and C on the LT1499; between the two amplifi ers on the
LT1498.
Note 6: Output voltage swings are measured between the output and
power supply rails.
Note 7: V
S
= 3V, V
S
= ±15V GBW limit guaranteed by correlation to
5V tests.
Note 8: V
S
= 3V, V
S
= 5V slew rate limit guaranteed by correlation to
±15V tests.
