Datasheet

LT1970
3
1970fe
For more information www.linear.com/LT1970
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. See Test Circuit for standard test conditions.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
R
IN
Input Resistance Common Mode
Differential Mode
500
100
kΩ
kΩ
C
IN
Input Capacitance Pin 8 and Pin 9 to Ground 6 pF
V
CM
Input Voltage Range Typical
Guaranteed by CMRR Test
l
–14.5
–12.0
13.6
12.0
V
V
CMRR Common Mode Rejection Ratio –12V < V
CM
< 12V
l
92 105 dB
PSRR Power Supply Rejection Ratio V
EE
= V
–
= –5V, V
CC
= V
+
= 3V to 30V
V
EE
= V
–
= –5V, V
CC
= 30V, V
+
= 2.5V to 30V
V
EE
= V
–
= –3V to –30V, V
CC
= V
+
= 5V
V
EE
= –30V, V
–
= –2.5V to –30V, V
CC
= V
+
= 5V
l
l
l
l
90
110
90
110
100
130
100
130
dB
dB
dB
dB
A
VOL
Large-Signal Voltage Gain R
L
= 1k, –12.5V < V
OUT
< 12.5V
l
100
75
150 V/mV
V
/mV
R
L
= 100Ω, –12.5V < V
OUT
< 12.5V
l
80
40
120 V/mV
V
/mV
R
L
= 10Ω, –5V < V
OUT
< 5V, V
+
= –V
–
= 8V
l
20
5
45 V/mV
V
/mV
V
OL
Output Sat Voltage Low V
OL
= V
OUT
– V
–
R
L
= 100, V
CC
= V
+
= 15V, V
EE
= V
–
= –15V
R
L
= 10, V
CC
= –V
EE
= 15V, V
+
= –V
–
= 5V
l
1.9
0.8
2.5 V
V
V
OH
Output Sat Voltage High V
OH
= V
+
– V
OUT
R
L
= 100, V
CC
= V
+
= 15V, V
EE
= V
–
= –15V
R
L
= 10, V
CC
= –V
EE
= 15V, V
+
= –V
–
= 5V
l
1.7
1.0
2.3 V
V
I
SC
Output Short-Circuit Current Output Low, R
SENSE
= 0Ω
Output High, R
SENSE
= 0Ω
500
–1000
800
–800
1200
–500
mA
mA
SR Slew Rate –10V < V
OUT
< 10V, R
L
= 1k 0.7 1.6 V/µs
FPBW Full Power Bandwidth V
OUT
= 10V
PEAK
(Note 5) 11 kHz
GBW Gain Bandwidth Product f = 10kHz 3.6 MHz
t
S
Settling Time 0.01%, V
OUT
= 0V to 10V, A
V
= –1, R
L
= 1k 8 µs
Current Sense Characteristics
V
SENSE(MIN)
Minimum Current Sense Voltage VC
SRC
= VC
SNK
= 0V
l
0.1
0.1
4 7
10
mV
mV
V
SENSE(4%)
Current Sense Voltage 4% of Full Scale VC
SRC
= VC
SNK
= 0.2V
l
15 20 25 mV
V
SENSE(10%)
Current Sense Voltage 10% of Full Scale VC
SRC
= VC
SNK
= 0.5V
l
45 50 55 mV
V
SENSE(FS)
Current Sense Voltage 100% of Full Scale VC
SRC
= VC
SNK
= 5V
l
490
480
500
500
510
520
mV
mV
I
BI
Current Limit Control Input Bias Current VC
SRC
, VC
SNK
Pins
l
–1 –0.2 0.1 µA
I
SENSE
– SENSE
–
Input Current 0V < (VC
SRC
, VC
SNK
) < 5V
l
–500 500 nA
I
FILTER
FILTER Input Current 0V < (VC
SRC
, VC
SNK
) < 5V
l
–500 500 nA
I
SENSE
+ SENSE
+
Input Current VC
SRC
= VC
SNK
= 0V
VC
SRC
= 5V, VC
SNK
= 0V
VC
SRC
= 0V, VC
SNK
= 5V
VC
SRC
= VC
SNK
= 5V
l
l
l
l
–500
200
–300
–25
250
–250
500
300
–200
25
nA
nA
nA
nA
Current Sense Change with Output Voltage
VC
SRC
= VC
SNK
= 5V, –12.5V < V
OUT
< 12.5V ±0.1 %
Current Sense Change with Supply Voltage VC
SRC
= VC
SNK
= 5V, 6V < (V
CC
, V
+
) < 18V
2.5V < V
+
< 18V, V
CC
= 18V
–18V < (V
EE
, V
–
) < –2.5V
–18V < V
–
< –2.5V, V
EE
= –18V
±0.05
±0.01
±0.05
±0.01
%
%
%
%
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