Datasheet

LTC2991
6
2991fd
For more information www.linear.com/LTC2991
Typical perForMance characTerisTics
T
A
= 25°C, V
CC
= 3.3V, unless otherwise noted.
LTC2991 Differential Noise
Differential Transfer Function
Differential INL
T
INTERNAL
Noise
Remote Diode Noise
LSBs (19.075µV/LSB)
–4
COUNTS
300
400
500
800 READINGS
–1 1
2991 G13
200
100
0
–3 –2
0
2 3
V1-V2 (V)
–0.4
LTC2991 V1-V2 (V)
0
0.2
0.4
2991 G14
–0.2
–0.4
–0.2
0
0.2
–0.3
–0.1
0.1
0.3
0.4
–0.1
0.1
–0.3
0.3
V
IN
(V)
–0.4
INL (LSBs)
0
1
0.4
2991 G15
–1
–2
–0.2
0
0.2
2
(°C)
–0.75 –0.5
0
COUNTS
200
500
1000 READINGS
–0.25
0.25
0.5
2991 G16
100
400
300
0
0.75
(°C)
–0.75 –0.5
0
COUNTS
200
600
1000 READINGS
500
–0.25
0.25
0.5
2991 G17
100
400
300
0
0.75
Single-Ended Transfer Function Single-Ended INL
V
X
(V)
–1
4
5
2 4
2991 G11
3
2
–0 1
3 5 6
1
0
–1
6
LTC2991 VALUE (V)
V
CC
= 5V
V
CC
= 3.3V
V
X
(V)
0
–1.0
INL (LSBs)
–0.5
0
0.5
1.0
1 2 3 4
2991 G12
5
V
CC
= 5V
V
CC
= 3.3V
Single-Ended Noise
LSBs (305.18µV/LSB)
–3
COUNTS
3500
0
2991 G10
2000
1000
–2 –1 1
500
0
4000
4800 READINGS
3000
2500
1500
2 3