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LTC1968CMS8#PBF
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P28
4
L
TC1968
1968f
TYPICAL PERFOR A CE CHAR
AC
TERIST
ICS
UW
Gain and Offset
vs Output Common Mode Voltage
Gain and Offset
vs Input Common Mode Voltage
INPUT COMMON MODE VOLTAGE (V)
0
–
0.5
GAIN ERROR (%)
OFFSET VOLTAGE (mV)
–
0.4
–
0.2
–
0.1
0
0.5
0.2
1.0
2.0
2.5
5.0
4.5
1968 G01
–
0.3
0.3
0.4
0.1
–1.0
–
0.8
–
0.4
–
0.2
0
1.0
0.4
–
0.6
0.6
0.8
0.2
0.5
1.5
3.0
3.5
4.0
V
IOS
V
OOS
GAIN ERROR
50mV
≤
V
IN
≤
350mV
OUTPUT COMMON MODE VOLTAGE (V)
0
–
0.5
GAIN ERROR (%)
OFFSET VOLTAGE (mV)
–
0.4
–
0.2
–
0.1
0
0.5
0.2
1.0
2.0
2.5
5.0
4.5
1968 G02
–
0.3
0.3
0.4
0.1
–1.0
–
0.8
–
0.4
–
0.2
0
1.0
0.4
–
0.6
0.6
0.8
0.2
0.5
1.5
3.0
3.5
4.0
V
IOS
V
OOS
GAIN ERROR
50mV
≤
V
IN
≤
350mV
Gain and Offset vs Temperature
Gain and Offset vs Supply Voltage
SUPPLY VOLTAGE (V)
4.5
GAIN ERROR (%)
OFFSET VOLTAGE (mV)
0.1
0.3
0.5
5.7
1968 G03
–0
.1
–0
.3
0
0.2
0.4
–0
.2
–0
.4
–0
.5
0.2
0
0.6
1.0
–
0.2
–
0.6
0.4
0.8
–
0.4
–
0.8
–1.0
4.8
5.1
5.4
6.0
V
OOS
V
IOS
GAIN ERROR
50mV
≤
V
IN
≤
350mV
TEMPERATURE (
°
C)
–40
–
0.5
GAIN ERROR (%)
OFFSET VOLTAGE (mV)
–
0.4
–
0.2
–
0.1
0
0.5
0.2
–15
10
85
1968 G04
–
0.3
0.3
0.4
0.1
–
0.5
–
0.4
–
0.2
–
0.1
0
0.5
0.2
–
0.3
0.3
0.4
0.1
35
60
V
IOS
V
OOS
GAIN ERROR
50mV
≤
V
IN
≤
350mV
5
L
TC1968
1968f
TYPICAL PERFOR A CE CHAR
AC
TERIST
ICS
UW
Performance vs Large Crest Factor
AC Linearity
DC Linearity
Supply Current vs Supply Voltage
Supply Current vs Temperature
Power Supply and ENABLE Pin
Current vs ENABLE Voltage
Input Signal Bandwidth
vs RMS Value
Performance vs Crest Factor
ENABLE PIN VOLTAGE (V)
0
3.0
2.5
2.0
1.5
–0.5
1.0
0.5
0
–1.0
0
–100
100
I
S
I
EN
–200
200
–300
300
–400
35
1968 G11
12
46
SUPPLY CURRENT (mA)
ENABLE PIN CURRENT (nA)
Input Signal Bandwidth
CREST FACTOR
1
199.0
199.8
199.6
199.4
199.2
OUTPUT VOLTAGE (mV DC)
200.0
200.2
200.4
200.6
23
4
5
1kHz
10kHz
1968 G05
200.8
201.0
200mV
RMS
SCR WAVEFORMS
C
AVE
= 10
µ
F
O.1%/DIV
60Hz
20Hz
CREST FACTOR
1
OUTPUT VOLTAGE (mV DC)
220
4
1968 G06
190
170
23
5
160
150
140
130
120
210
200
180
678
200mV
RMS
SCR WAVEFORMS
C
AVE
= 10
µ
F
5%/DIV
60Hz
40kHz
10kHz
1kHz
20Hz
V
IN1
(mV AC
RMS
)
0
V
OUT
(mV DC) – V
IN
(mV AC
RMS
)
0.20
0.15
0.10
0.05
0
–
0.05
–
0.10
–
0.15
–
0.20
400
60Hz
40kHz
1968 G07
100
200
300
500
SINEWAVES
C
AVE
= 10
µ
F
V
IN2
= MIDSUPPLY
V
IN1
(mV)
–500
{V
OUTDC
– |V
INDC
|} (mV)
0.02
0.06
0.10
300
1968 G08
–
0.02
–
0.06
0
0.04
0.08
–
0.04
–
0.08
–
0.10
–300
–100
100
500
C
AVE
= 10
µ
F
V
IN2
= MIDSUPPLY
EFFECT OF OFFSETS
MAY BE POSITIVE OR
NEGATIVE AT V
IN
= 0V
SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT (mA)
0.5
1.0
1.5
2.0
3.0
1
23
4
1968 G09
56
2.5
TEMPERATURE (
°
C)
–55
2.30
SUPPLY CURRENT (mA)
2.32
2.36
2.38
2.40
–15
25
45
125
1968 G10
2.34
–35
5
65
85
105
2.44
2.42
INPUT SIGNAL FREQUENCY (Hz)
1k
10k
10
OUTPUT DC VOLTAGE (mV)
100
1000
100k
1M
10M
100M
1968 G12
–3dB
1% ERROR
1% ERROR
INPUT SIGNAL FREQUENCY (Hz)
100
190
OUTPUT DC VOLTAGE (mV)
192
194
196
198
1k
10k
100k
1M
10M
1968 G13
188
186
184
182
200
202
1%/DIV
C
AVE
= 10
µ
F
V
IN
= 200mV
RMS
6
L
TC1968
1968f
TYPICAL PERFOR A CE CHAR
AC
TERIST
ICS
UW
Bandwidth to 500kHz
DC Transfer Function Near Zero
Input Common Mode Rejection
Ratio vs Frequency
Output Accuracy
vs Signal Amplitude
Output Noise vs Input Frequency
INPUT FREQUENCY (kHz)
0
199
200
202
400
1968 G14
198
197
100
200
300
500
196
195
201
OUTPUT VOLTAGE (mV)
0.5%/DIV
C
AVE
= 10
µ
F
V
IN
= 200mV
RMS
V
IN1
(mV DC)
–30
–10
V
OUT
(mV DC)
0
10
20
–2
0
–10
01
0
1968 G15
20
30
40
–5
5
15
25
35
30
V
IN2
= MIDSUPPLY
THREE REPRESENTATIVE UNITS
INPUT FREQUENCY (Hz)
10
0
INPUT CMRR (dB)
20
40
60
100
1k
10k
100k
1967 G16
1M
80
10
30
50
70
90
10M
4.5V COMMON
MODE INPUT
CONVERSION
TO DC OUTPUT
V
IN1
(V
RMS
)
0
–20
{V
OUT
(mV DC) – V
IN
(mV
RMS
)} (mV)
–15
–10
–5
0
5
10
0.5
1
1.5
DC
2
1967 G17
1% ERROR
V
IN2
= MIDSUPPLY
–1% ERROR
AC – 60Hz
SINEWAVE
INPUT FREQUENCY (Hz)
10k
0.001
PEAK OUTPUT NOISE (% OF READING)
0.01
0.1
1
100k
1M
1967 G18
PEAK NOISE MEASURED
IN 10 SECOND PERIOD
C
AVE
= 1
µ
F
C
AVE
= 100
µ
F
C
AVE
= 10
µ
F
Output Noise vs Device
INPUT FREQUENCY (Hz)
1k
0.01
PEAK OUTPUT NOISE (% OF READING)
0.1
1
10k
100k
1M
1968 G19
LTC1966
C
AVE
= 1
µ
F
LTC1967
C
AVE
= 1.5
µ
F
LTC1968
C
AVE
= 6.8
µ
F
AVE CAPACITOR CHOSEN FOR EACH DEVICE
TO GIVE A 1 SECOND, 0.1% SETTLING TIME
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P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
P25-P27
P28-P28
LTC1968CMS8#PBF
Mfr. #:
Buy LTC1968CMS8#PBF
Manufacturer:
Analog Devices Inc.
Description:
Power Management Specialized - PMIC Prec Wide B&width, RMS-to-DC Conv
Lifecycle:
New from this manufacturer.
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