LTC1968CMS8 Linear Technology, LTC1968CMS8 Datasheet - Page 6

• Manufacturer Part Number: LTC1968CMS8
• Description: IC CONVERTER RMS-DC PREC 8MSOP
• Manufacturer: Linear Technology

Specifications of LTC1968CMS8

• Current - Supply: 2.3mA
• Voltage - Supply: 5.0V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1968
TYPICAL PERFOR A CE CHARACTERISTICS
6
–10
–15
–20
202
201
199
197
196
195
200
198
10
–5
5
0
0
0
Output Accuracy
vs Signal Amplitude
Bandwidth to 500kHz
0.5%/DIV
C
V
–1% ERROR
AVE
IN
1% ERROR
= 200mV
= 10µF
100
0.5
INPUT FREQUENCY (kHz)
RMS
200
V
IN1
(V
1
RMS
300
V
IN2
)
= MIDSUPPLY
AC – 60Hz
SINEWAVE
1.5
W
400
DC
1967 G17
1968 G14
U
500
2
0.001
0.01
–10
0.1
40
35
30
25
20
15
10
–5
5
1
0
10k
–30
Output Noise vs Input Frequency
DC Transfer Function Near Zero
PEAK NOISE MEASURED
IN 10 SECOND PERIOD
C
V
THREE REPRESENTATIVE UNITS
AVE
IN2
= MIDSUPPLY
–20
= 10µF
C
AVE
INPUT FREQUENCY (Hz)
–10
= 1µF
V
IN1
100k
(mV DC)
0
C
AVE
10
= 100µF
20
1967 G18
1968 G15
1M
30
0.01
0.1
90
80
70
60
50
40
30
20
10
0
1
10
1k
Input Common Mode Rejection
Ratio vs Frequency
Output Noise vs Device
4.5V COMMON
MODE INPUT
CONVERSION
TO DC OUTPUT
AVE CAPACITOR CHOSEN FOR EACH DEVICE
TO GIVE A 1 SECOND, 0.1% SETTLING TIME
C
AVE
LTC1966
C
100
AVE
= 1µF
LTC1967
= 1.5µF
INPUT FREQUENCY (Hz)
INPUT FREQUENCY (Hz)
10k
1k
10k
100k
100k
LTC1968
C
AVE
= 6.8µF
1M
1968 G19
1967 G16
1968f
10M
1M