ltc2435-1 Linear Technology Corporation, ltc2435-1 Datasheet - Page 6

• Manufacturer Part Number: ltc2435-1
• Description: 20-bit No Latency Delta Sigma Adcs With Differential Input And Differential Reference
• Manufacturer: Linear Technology Corporation

LTC2435/LTC2435-1
TYPICAL PERFOR A CE CHARACTERISTICS
6
–340
–345
–350
–355
–360
–10
–4
–6
10
–2
–8
8
6
4
2
0
–2.5
–2.5
Total Unadjusted Error (V
V
Integral Nonlinearity (V
V
F
V
V
V
F
V
V
V
REF
REF
O
CC
REF
INCM
O
CC
REF
INCM
= GND
= GND
= 5V
= 5V
= 5V
= 5V
–1.5
= 5V)
= 5V)
–1.5
= V
= V
INCM
T
INCM
A
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= 85°C
= 2.5V
–0.5
= 2.5V
–0.5
30
25
20
15
10
–330
5
0
Noise Histogram (Output Rate =
15Hz, V
T
10,000 CONSECUTIVE READINGS
V
V
V
V
F
T
A
O
A
CC
REF
IN
INCM
–329
= 25°C
T
= GND
= 25°C
T
= 0V
A
= 5V
A
0.5
0.5
= 5V
= –45°C
= 25°C
= 2.5V
–328
T
OUTPUT CODE(ppm OF V
A
CC
CC
= –45°C
–327
W
T
= 5V, V
CC
1.5
= 5V,
A
1.5
= 85°C
= 5V,
–326 –325
2435 G04
2435 G01
U
2.5
REF
2.5
–324 –323 –322
= 5V)
GAUSSIAN
DISTRIBUTION
m = –325.4ppm
σ = 0.79ppm
REF
–680
–685
–690
–695
–700
–705
–710
)
–1
–2
–3
–1.25
–1.25
3
2
1
0
2435 G07
Integral Nonlinearity (V
V
Total Unadjusted Error (V
V
F
V
V
V
F
V
V
V
REF
–321
REF
O
CC
REF
INCM
O
CC
REF
INCM
= GND
= GND
= 5V
= 5V
T
= 2.5V
–0.75
= 2.5V
–0.75
= 2.5V)
= 2.5V)
A
= V
= V
= 85°C
INCM
INCM
T
A
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= –45°C
–0.25
–0.25
= 1.25V
= 1.25V
T
A
= 25°C
0.25
0.25
T
A
= 25°C
T
CC
A
T
= 85°C
CC
0.75
0.75
A
= 5V,
14
12
10
= –45°C
8
6
4
2
0
= 5V,
Noise Histogram (Output Rate =
15Hz, V
–372 –370 –368 –366 –364 –362 –360 –358
10,000 CONSECUTIVE READINGS
V
V
V
V
F
T
2435 G02
2435 G05
O
A
CC
REF
IN
INCM
= GND
= 25°C
= 0V
1.25
1.25
= 2.7V
= 2.5V
= 2.5V
OUTPUT CODE (ppm OF V
CC
= 2.7V, V
–320
–330
–340
–350
–360
–10
– 2
– 4
– 6
– 8
10
–1.25
–1.25
8
6
4
2
0
Total Unadjusted Error (V
V
Integral Nonlinearity (V
V
F
V
V
V
F
V
V
V
REF
REF
O
O
CC
REF
INCM
CC
REF
INCM
= GND
= GND
REF
= 2.7V
= 2.7V
–0.75
= 2.5V
= 2.5V
–0.75
= 2.5V)
= 2.5V)
GAUSSIAN
DISTRIBUTION
m = –365ppm
σ = 1.55ppm
= V
= V
= 2.5V)
INCM
INCM
REF
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
T
A
)
–0.25
–0.25
= 1.25V
= 1.25V
= –45°C
2435 G08
T
A
= 25°C
T
A
0.25
0.25
= –45°C
T
A
T
A
CC
= 25°C
= 85°C
CC
0.75
0.75
= 2.7V,
T
A
= 2.7V,
= 85°C
2435 G03
2435 G06
24351fb
1.25
1.25