參數(shù)資料
型號(hào)： AD7734
廠商： Analog Devices, Inc.
英文描述： 4-Channel, +-10 V Input Range, High Throughput, 24-Bit sigma ∆ ADC
文件頁數(shù)： 14/32頁
文件大?。?/td> 1542K
代理商： AD7734
AD7734
REGISTER DESCRIPTION
Table 11. Register Summary
Register
Communications
I/O Port
Revision
Test
ADC Status
Checksum
ADC Zero-Scale Calibration
ADC Full-Scale
Channel Data
1
Channel Zero-Scale Cal.
1
Channel Full-Scale Cal.
1
Channel Status
1
Channel Setup
1
Channel Conversion Time
1
Mode
2
Rev. 0 | Page 14 of 32
Addr
(hex)
00
01
02
03
04
05
06
07
08–0B
10–13
18–1B
20–23
28–2B
30–33
38–3B
Dir
W
R/W
R
R/W
R
R/W
R/W
R/W
R
R/W
R/W
R
R/W
R/W
R/W
Bit 7
Bit 6
Bit 5
Bit 4
Default Value
Bit 3
Bit 2
Bit 1
Bit 0
0
P0
R/W
P1
P1 Pin
Chip Revision Code
x
6-Bit Register Address
RDYFN
0
P0 DIR
1
P1 DIR
1
0
0
0
0
SYNC
0
P0 Pin
Chip Generic Code
0
x
x
24-Bit Manufacturing Test Register
x
0
1
0
–
0
–
0
–
0
–
0
RDY3
0
RDY2
0
RDY1
0
RDY0
0
16-Bit Checksum Register
24-Bit ADC Zero-Scale Calibration Register
800000h
24-Bit ADC Full-Scale Register
800000h
16-/24-Bit Data Registers
8000h
24-Bit Channel Zero-Scale Calibration Registers
800000h
24-Bit Channel Full-Scale Calibration Registers
200000h
CH0
0/P0
Channel Number
0
0
Stat OPT
0
0
CHOP
1
MD2
MD1
MD0
0
0
0
0
CH1
RDY/P1
0
ENABLE
0
NOREF
0
0
0
SIGN
0
RNG1
0
OVR
0
RNG0
0
0
0
0
0
FW (7-Bit Filter Word)
11h
CLKDIS
DUMP
0
Cont RD
0
24/16 BIT
0
CLAMP
0
0
1
The two LSBs of the register address, i.e., Bit 1 and Bit 0 in the communication register, specify the channel number of the register being accessed.
2
There is only one mode register, although the mode register can be accessed in one of four address locations. The address used to write the mode register specifies
the ADC channel on which the mode will be applied. Only address 38h must be used for reading from the mode register.
Table 12. Operational Mode Summary
MD2
MD1
MD0
Mode
0
0
0
Idle Mode
0
0
1
Continuous Conversion Mode
0
1
0
Single Conversion Mode
0
1
1
Power-Down (Standby) Mode
1
0
0
ADC Zero-Scale Self-Calibration
1
0
1
For Future Use
1
1
0
Channel Zero-Scale System Calibration
1
1
1
Channel Full-Scale System Calibration
Table 13. Input Range Summary
RNG1
RNG0
0
0
0
1
1
0
1
1
Nominal Input Voltage Range
±10 V
0 V to +10 V
±5 V
0 V to +5 V
相關(guān)PDF資料
PDF描述
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