Datasheet

5
LTC1968
1968f
TYPICAL PERFOR A CE CHARACTERISTICS
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
= 10µF
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
= 10µF
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
= 10µF
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
= 10µF
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
234
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
= 10µF
V
IN
= 200mV
RMS