ltc2440cgn-trpbf Linear Technology Corporation, ltc2440cgn-trpbf Datasheet - Page 7

• Manufacturer Part Number: ltc2440cgn-trpbf
• Description: 24-bit High Speed Differential Delta Sigma Adc With Selectable Speed/resolution
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
–2.5
–5.0
–2.5
–5.0
–10
–15
–20
5.0
2.5
5.0
2.5
10
15
–5
20
0
5
0
0
–55
–55
0
Negative Full-Scale Error
vs Temperature
Offset Error vs Conversion Rate
Offset Error vs Temperature
V
V
V
V
V
5.5V
CC
CC
REF
REF
REF
500 1000 1500 2000
4.5V
= 5V
= 5V
+
–
–25
–25
= 5V
= 5V
= GND
V
V
V
V
V
OSR = 256
f
5V
O
CC
REF
REF
REF
IN
= GND
+
CONVERSION RATE (Hz)
= 4.5V
+
–
= V
= 2.5V
TEMPERATURE (°C)
TEMPERATURE (°C)
V
= 2.5V
= GND
5
V
V
V
V
V
OSR = 32768
f
5
CC
O
IN
CC
REF
REF
REF
INCM
V
f
T
= GND
–
O
= 5.5V
A
IN
= 4.5V
= GND
+
–
= GND
= 4.5V
= 25°C
+
= 4.5V
= GND
= 2.25V
= V
35
35
IN
–
V
V
V
V
V
OSR = 256
f
V
O
= GND
CC
REF
REF
REF
IN
CC
65
65
= GND
+
2500 3000 3500
V
V
V
V
V
OSR = 32768
f
= 5.5V, 5V
O
= 4.5V
+
–
= V
CC
REF
REF
REF
INCM
= 5V
= 5V
= GND
= GND
= 5.5V, 5V
IN
+
–
= 5V
–
= 5V
= GND
95
95
= 2.5V
= GND
2440 G25
2440 G19
2440 G22
125
125
–2.5
–5.0
–10
–20
–15
5.0
2.5
20
18
16
14
12
10
15
10
–5
20
5
0
8
6
4
2
0
0
2000
–55
0
Positive Full-Scale Error
vs Temperature
Offset Error vs V
INL vs Output Rate
(OSR = 128) External Clock Sweep
10MHz to 20MHz
V
V
V
V
5.5V
EXTERNAL CLOCK 10MHz
(OR INTERNAL OSCILLATOR)
CC
REF
REF
REF
V
TEMP = 25°C
SWEEP (V
REF
4.5V
= 5V
–25
+
–
= 5V
= 5V
= GND
= V
1
2500
5V
CC
IN
TEMPERATURE (°C)
OUTPUT RATE (Hz)
= 5V
5
V
V
V
V
V
OSR = 32768
f
– V
V
OSR = 32768
f
T
O
O
CC
REF
REF
REF
INCM
A
IN
= GND
2
= GND
= 25°C
REF
V
+
= 4.5V
+
–
INCM
= 4.5V
= V
3000
= 4.5V
= GND
= 2.25V
/2) TO V
35
INCM
IN
(V)
–
= V
3
65
REF
INCM
EXTERNAL
CLOCK 20MHz
V
V
V
V
V
OSR = 32768
f
O
3500
CC
REF
REF
REF
INCM
/2
= GND
= 5.5V, 5V
+
–
= 5V
4
95
= 5V
= GND
= 2.5V
2440 G20
2440 G26
2440 G23
4000
125
5
–2.5
–5.0
5.0
2.5
3.5
3.0
1.0
0.5
2.5
2.0
1.5
0
5
4
3
2
1
0
2000
4.5
–55
Offset Error vs V
RMS Noise vs Temperature
RMS Noise vs Output Rate
(OSR = 128) External Clock
Sweep 10MHz to 20MHz
V
V
V
V
REF
REF
REF
IN
V
TEMP = 25°C
V
+
REF
IN
+
–
= V
–25
= 2.5V
±V
= 2.5V
= GND
4.7
V
V
V
V
V
OSR = 256
f
= V
O
IN
CC
REF
REF
REF
IN
REF
2500
= GND
–
+
CC
= 4.5V
V
V
V
= GND
+
–
/2
= V
= 2.5V
TEMPERATURE (°C)
CC
CC
CC
OUTPUT RATE (Hz)
= 2.5V
= GND
= 5V
5
IN
= 4.5V
= 5V
= 5.5V
4.9
–
V
= GND
OSR = 32768
f
T
O
CC
3000
A
LTC2440
CC
35
= GND
= 25°C
(V)
5.1
V
V
V
V
V
OSR = 256
f
O
CC
REF
REF
REF
IN
65
= GND
+
= 5.5V, 5V
+
–
= V
3500
= 5V
= 5V
= GND
5.3
IN
–
95
= GND
2440 G21
2440 G27
2440 G24
2440fc
7
4000
5.5
125