AD7294BSUZ Analog Devices Inc, AD7294BSUZ Datasheet - Page 27

• Manufacturer Part Number: AD7294BSUZ
• Description: IC ADC 12BIT W/DAC/TEMP 64TQFP
• Manufacturer: Analog Devices Inc
• Type: ADC, DACr

Specifications of AD7294BSUZ

• Resolution (bits): 12 b
• Data Interface: Serial
• Sampling Rate (per Second): 22.22k
• Voltage Supply Source: Analog and Digital
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -55°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Sampling Rate: 22.22kSPS
• Input Channel Type: Differential, Single Ended
• Supply Voltage Range - Digital: 4.5V To 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REGISTER SETTING
The AD7294 contains internal registers (see Figure 49) that
store conversion results, high and low conversion limits, and
information to configure and control the device.
Each data register has an address to which the address pointer
register points when communicating with it. The command
register is the only register that is a write-only register; the rest
are read/write registers.
ADDRESS POINTER REGISTER
The address pointer register is an 8-bit register, in which the
6 LSBs are used as pointer bits to store an address that points
to one of the AD7294 data registers, see Table 9.
REGISTER
ADDRESS
POINTER
Figure 49. AD7294 Register Structure
SERIAL BUS INTERFACE
T
T
REGISTERS × 3
REGISTERS × 3
REGISTERS × 2
POWER-DOWN
CONFIGURATION
REGISTERS × 18
SENSE
SENSE
HYSTERESIS
REGISTERS
SEQUENCE
COMMAND
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
CHANNEL
DATA HIGH /
REGISTER
DATA LOW
RESULT
ALERT
DAC
RESULT
OFFSET
SDA
SCL
Rev. F | Page 27 of 48
Table 9. AD7294 Register Address
Address in Hex
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
20
21
22
23
24
25
26
27
40
41
Registers (R is Read/W is Write)
Command Register (W)
Result Register (R)/DAC
T
T
T
Alert Register A (R/W)
Alert Register B (R/W)
Alert Register C (R/W)
Channel Sequence Register (R/W)
Configuration Register (R/W)
Power-Down Register (R/W)
DATA
DATA
Hysteresis Register V
DATA
DATA
Hysteresis Register V
DATA
DATA
Hysteresis Register V
DATA
DATA
Hysteresis Register V
DATA
DATA
Hysteresis Register I
DATA
DATA
Hysteresis Register I
DATA
DATA
Hysteresis Register T
DATA
DATA
Hysteresis Register T
DATA
DATA
Hysteresis Register T
T
T
Factory Test Mode
Factory Test Mode
SENSE
SENSE
SENSE
SENSE
SENSE
1 Result (R)/DAC
2 Result (R)/DAC
INT Result (R)/DAC
1 Offset Register (R/W)
2 Offset Register (R/W)
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
LOW
HIGH
Register V
Register V
Register, V
Register V
Register I
Register I
Register T
Register T
Register T
Register V
Register V
Register V
Register V
Register I
Register I
Register T
Register T
Register T
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
IN
IN
IN
SENSE
SENSE
SENSE
IN
IN
IN
IN
IN
SENSE
SENSE
0 (R/W)
1 (R/W)
3 (R/W)
0 (R/W)
1 (R/W)
2 (R/W)
2 (R/W)
3 (R/W)
SENSE
SENSE
SENSE
IN
IN
IN
IN
B
C
0 (R/W)
1 (R/W)
2 (R/W)
3 (R/W)
1 (R/W)
2 (R/W)
1 (R/W)
2 (R/W)
1 (R/W)
2 (R/W)
INT (R/W)
Value (W)
Value (W)
1 (R/W)
2 (R/W)
INT (R/W)
A
D
1 (R/W)
2 (R/W)
1 (R/W)
2 (R/W)
INT (R/W)
Value (W)
Value (W)
AD7294