Datasheet

LTC1966
6
1966fb
Typical perForMance characTerisTics
Gain and Offsets vs V
SS
Supply
V
SS
(V)
–6
–0.5
GAIN ERROR (%)
OFFSET VOLTAGE (mV)
–0.4
–0.2
–0.1
0
0.5
0.2
–5
–4
0
1966 G11
–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
–2
–3
–1
V
DD
= 5V
V
IOS
V
OOS
GAIN ERROR
NOMINAL
SPECIFIED
CONDITIONS
V
DD
(V)
2.5
–0.5
GAIN ERROR (%)
OFFSET VOLTAGE (mV)
–0.4
–0.2
–0.1
0
0.5
0.2
3.0
3.5
5.5
1966 G10
–0.3
0.3
0.4
0.1
–1.0
–0.8
–0.4
–0.2
0
1
0.4
–0.6
0.6
0.8
0.2
4.5
4.0
5.0
V
SS
= GND
V
IOS
V
OOS
GAIN ERROR
AC Linearity
Performance vs Crest FactorGain and Offsets vs V
DD
Supply
V
IN1
(V
RMS
)
0
–20
V
OUT
(mV DC) – V
IN
(mV
RMS
)
–15
–10
–5
0
5
10
0.5 1 1.5 2
1966 G24
2.5
1% ERROR
AC INPUTS = 60Hz
SINEWAVES
V
IN2
= GND
–1% ERROR
AC INPUT
V
DD
= 3V
AC INPUT
V
DD
= 5V
DC INPUT
V
DD
= 5V
Output Accuracy vs Signal
Amplitude
CREST FACTOR
1.0
199.8
OUTPUT VOLTAGE (mV DC)
200.0
200.2
200.4
200.6
2.0 3.0
4.0
5.0
1966 G15
200.8
201.0
1.5 2.5
3.5
4.5
20Hz 60Hz
100Hz
200mV
RMS
SCR WAVEFORMS
C
AVE
= 10µF
V
DD
= 5V
O.1%/DIV
Performance vs Large Crest Factors
CREST FACTOR
1
OUTPUT VOLTAGE (mV DC)
220
4
1966 G12
190
170
2 3 5
160
150
230
210
200
180
6 7 8
200mV
RMS
SCR WAVEFORMS
C
AVE
= 4.7µF
V
DD
= 5V
5%/DIV
20Hz
100Hz
60Hz
250Hz
FUNDAMENTAL
FREQUENCY
DC Linearity
V
IN1
(mV)
–500
V
OUTDC
– |V
INDC
| (mV)
0.02
0.06
0.10
300
1966 G14
–0.02
–0.06
0
0.04
0.08
–0.04
–0.08
–0.10
–300
–100
100
500
EFFECT OF OFFSETS
MAY BE POSITIVE
OR NEGATIVE
C
AVE
= 1µF
V
IN2
= GND
Quiescent Supply Currents
vs Supply Voltage
V
DD
SUPPLY VOLTAGE (V)
0
–25
SUPPLY CURRENT (µA)
0
50
75
100
4
200
1966 G16
25
2 6
3
1 5
125
150
175
V
SS
= GND
I
DD
I
SS
Shutdown Currents
vs ENABLE Voltage
ENABLE PIN VOLTAGE (V)
0
250
200
I
DD
I
EN
150
100
50
0
–50
–100
500
250
0
–250
–500
3 5
1966 G18
1 2
4 6
SUPPLY CURRENT (µA)
ENABLE PIN CURRENT (nA)
V
DD
= 5V
I
SS
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
1966 G13
100 200 300 50035050 150 250 450
60Hz SINEWAVES
C
AVE
= 1µF
V
IN2
= GND