Datasheet

LT1970
2
1970fc
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
to V
EE
) ..................................... 36V
Positive High Current Supply (V
+
) ................... V
to V
CC
Negative High Current Supply(V
) ....................V
EE
to V
+
Amplifi er Output (OUT) ..................................... V
to V
+
Current Sense Pins
(SENSE
+
, SENSE
, FILTER) ........................... V
to V
+
Logic Outputs (ISRC, ISNK, TSD) ....... COMMON to V
CC
Input Voltage (–IN, +IN) ............ V
EE
– 0.3V to V
EE
+ 36V
Input Current ......................................................... 10mA
Current Control Inputs
(VC
SRC
, VC
SNK
) ..............COMMON to COMMON + 7V
Enable Logic Input .............................. COMMON to V
CC
COMMON ....................................................... V
EE
to V
CC
Output Short-Circuit Duration ......................... Indefi nite
Operating Temperature Range (Note 2)....40°C to 85°C
Specifi ed Temperature Range (Note 3) .... –40°C to 85°C
Maximum Junction Temperature.......................... 150°C
Storage Temperature Range ................... 65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Note 1)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Op Amp Characteristics
V
OS
Input Offset Voltage
0°C < T
A
< 70°C
–40°C < T
A
< 85°C
l
l
200 600
1000
1300
µV
µV
µV
Input Offset Voltage Drift (Note 4)
l
10 –4 10 µV/°C
I
OS
Input Offset Current V
CM
= 0V
l
–100 100 nA
I
B
Input Bias Current V
CM
= 0V
l
–600 –160 nA
Input Noise Voltage 0.1Hz to 10Hz 3 µV
P-P
e
n
Input Noise Voltage Density 1kHz 15 nV/√Hz
i
n
Input Noise Current Density 1kHz 3 pA/√Hz
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LT1970#TRPBF LT1970#TR LT1970CFE 20-Lead Plastic TSSOP –40°C to 85°C
LT1970#TRPBF LT1970#TR LT1970IFE 20-Lead Plastic TSSOP –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/
ORDER INFORMATION
PIN CONFIGURATION
FE PACKAGE
20-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
V
EE
V
OUT
SENSE
+
FILTER
SENSE
V
CC
–IN
+IN
V
EE
V
EE
V
+
TSD
ISNK
ISRC
ENABLE
COMMON
VC
SRC
VC
SNK
V
EE
+
21
T
JMAX
= 150°C, θ
JA
= 40°C/W (NOTE 8)
EXPOSED PAD (PIN 21) IS CONNECTED TO V
EE
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. See Test Circuit for standard test conditions.
ELECTRICAL CHARACTERISTICS