LTC2440 Linear Technology, LTC2440 Datasheet - Page 16

• Manufacturer Part Number: LTC2440
• Description: 24-Bit High Speed Differential delta-sigma ADC
• Manufacturer: Linear Technology

(EXTERNAL)
APPLICATIO S I FOR ATIO
LTC2440
16
BUSY
SDO
SCK
CS
(EXTERNAL)
CONVERSION
BUSY
SDO
SCK
CS
SLEEP
U
1
BIT 0
EOC
5
SLEEP
U
CONVERSION
Hi-Z
DATA OUTPUT
TEST EOC
Figure 6. External Serial Clock, Reduced Data Output Length
Figure 7. External Serial Clock, CS = 0 Operation (2-Wire)
BIT 31
Hi-Z
W
EOC
TEST EOC
ANALOG INPUT RANGE
REFERENCE VOLTAGE
ANALOG INPUT RANGE
–0.5V
SLEEP
BIT 30
REFERENCE VOLTAGE
–0.5V
Hi-Z
REF
REF
0.1V TO V
TO 0.5V
0.1V TO V
U
BIT 31
TO 0.5V
EOC
BIT 29
SIG
1µF
REF
4.5V TO 5.5V
1µF
CC
4.5V TO 5.5V
1, 8, 9, 16
REF
1, 8, 9, 16
CC
BIT 30
BIT 28
MSB
2
3
4
5
6
2
3
4
5
6
DATA OUTPUT
V
REF
REF
IN
IN
GND
V
REF
REF
IN
IN
GND
CC
+
–
CC
LTC2440
+
–
+
–
LTC2440
+
–
BIT 27
BUSY
BIT 29
BUSY
SDO
SCK
SIG
EXT
SDI
SDO
SCK
CS
EXT
F
SDI
CS
O
F
O
15
14
13
12
11
7
10
15
14
13
12
11
10
7
DATA OUTPUT
BIT 26
BIT 28
MSB
3-WIRE
SPI INTERFACE
V
3-WIRE
SPI INTERFACE
CC
V
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
CC
200nV NOISE, 50/60Hz REJECTION
10-SPEED/RESOLUTION PROGRAMMABLE
2µV NOISE, 880Hz OUTPUT RATE
BIT 27
200nV NOISE, 50/60Hz REJECTION
10-SPEED/RESOLUTION PROGRAMMABLE
2µV NOISE, 880Hz OUTPUT RATE
LSB
BIT 9
BIT 5
24
BIT 8
CONVERSION
Hi-Z
BIT 0
TEST EOC
2410 F06
CONVERSION
sn2440, 2440fas
2440 F07