Datasheet

LTC1860/LTC1861
8
18601fa
TYPICAL PERFORMANCE CHARACTERISTICS
Change in Offset Error vs
Reference Voltage Change in Offset vs Temperature
Change in Gain Error vs
Reference Voltage
Change in Gain Error vs
Temperature
Signal-to-(Noise + Distortion)
vs Input Level 4096 Point FFT
Signal-to-(Noise + Distortion)
vs f
IN
Total Harmonic Distortion
vs f
IN
Spurious Free Dynamic Range
vs f
IN
REFERENCE VOLTAGE (V)
0
CHANGE IN OFFSET ERROR (LSB)
5
4
3
2
1
0
–1
–2
–3
–4
–5
4
1860/61 G10
1
2
3
5
T
A
= 25oC
V
CC
= 5V
TEMPERATURE (oC)
–50
CHANGE IN OFFSET (LSB)
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
50
75
1860/61 G11
–25
25
100
125
V
CC
= 5V
REFERENCE VOLTAGE(V)
0
CHANGE IN GAIN ERROR (LSB)
5
4
3
2
1
0
–1
–2
–3
–4
–5
2
4
5
1860/61 G12
1
3
V
CC
= 5V
T
A
= 25oC
TEMPERATURE (oC)
–50
CHANGE IN GAIN ERROR (LSB)
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
50
75
1860/61 G13
–25
25
100
125
V
CC
= 5V
V
REF
= 5V
INPUT LEVEL (dB)
–40
SIGNAL-TO-(NOISE + DISTORTION) (dB)
1195 G20
–30–35
–25
–15–20 –5–10 0
80
70
60
50
40
30
20
10
0
f
IN
= 10kHz
T
A
= 25oC
V
CC
= 5V
f (kHz)
0607090
AMPLITUDE (dB)
0
–20
–40
–60
–80
–100
–120
10 20 30 8040
1860/61 G15
10050
f
S
= 204.1kHz
f
IN
= 99.5kHz
T
A
= 25oC
V
CC
= 5V
f
IN
(kHz)
SIGNAL-TO-(NOISE + DISTORTION) (dB)
100
90
80
70
60
50
40
30
20
10
0
1 100 1000 10000
1860/61 G16
10
T
A
= 25oC
V
CC
= 5V
V
IN
= 0dB
SNR
SINAD
f
IN
(kHz)
1
TOTAL HARMONIC DISTORTION (dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10 100 1000
1860/61 G17
T
A
= 25oC
V
CC
= 5V
V
IN
= 0dB
f
IN
(kHz)
1
SPURIOUS FREE DYNAMIC RANGE (dB)
100
90
80
70
60
50
40
30
20
10
0
10 100 1000
1860/61 G18
T
A
= 25oC
V
CC
= 5V
V
IN
= 0dB