Datasheet

2
LTC1968
1968f
Supply Voltage
V
+
to GND ............................................................. 6V
Input Currents (Note 2) ..................................... ±10mA
Output Current (Note 3) ..................................... ±10mA
ENABLE Voltage ......................................... –0.3V to 6V
OUT RTN Voltage........................................ –0.3V to V
+
Operating Temperature Range (Note 4)
LTC1968C/LTC1968I ......................... – 40°C to 85°C
Specified Temperature Range (Note 5)
LTC1968C/LTC1968I ......................... – 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
ORDER PART
NUMBER
LTC1968CMS8
LTC1968IMS8
T
JMAX
= 150°C, θ
JA
= 220°C/ W
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
(Note 1)
MS8 PART MARKING
LTAFG
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are T
A
= 25°C. V
+
= 5V, V
OUTRTN
= 2.5V, C
AVE
= 10µF, V
IN
= 200mV
RMS
, V
ENABLE
= 0.5V
unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The temperature grade (I or C) is indicated on the shipping container.
1
2
3
4
GND
IN1
IN2
NC
8
7
6
5
ENABLE
V
+
OUT RTN
V
OUT
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Conversion Accuracy
G
ERR
Low Frequency Gain Error 50Hz to 20kHz Input (Notes 6, 7) ±0.1 ±0.3 %
● ±0.4 %
V
OOS
Output Offset Voltage (Notes 6, 7) 0.2 0.75 mV
∆V
OOS
/∆T Output Offset Voltage Drift (Note 11) ● 210µV/°C
LIN
ERR
Linearity Error 50mV to 350mV (Notes 7, 8) ● ±0.02 ±0.15 %
PSRRG Power Supply Rejection (Note 9) ±0.02 ±0.20 %/V
● ±0.25 %/V
V
IOS
Input Offset Voltage (Notes 6, 7, 10) 0.4 1.5 mV
∆V
IOS
/∆T Input Offset Voltage Drift (Note 11) ● 210µV/°C
Additional Error vs Crest Factor (CF)
CF = 3 60Hz Fundamental, 200mV
RMS
● 0.2 mV
CF = 5 60Hz Fundamental, 200mV
RMS
● 5mV
Input Characteristics
V
IMAX
Maximum Peak Input Swing Accuracy = 1% (Note 14) ● 1 1.05 V
I
VR
Input Voltage Range ● 0V
+
V
Z
IN
Input Impedance Average, Differential (Note 12) 1.2 MΩ
Average, Common Mode (Note 12) 100 MΩ
CMRRI Input Common Mode Rejection (Note 13) ● 50 400 µV/V
V
IMIN
Minimum RMS Input ● 5mV
PSRRI Power Supply Rejection (Note 9) ● 250 700 µV/V