参数资料
型号: AD7734BRUZ
厂商: Analog Devices Inc
文件页数: 6/32页
文件大小: 0K
描述: IC ADC 24BIT 4-CH 28-TSSOP
标准包装: 50
位数: 24
采样率(每秒): 15.4k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 100mW
电压电源: 模拟和数字
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 28-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 28-TSSOP
包装: 管件
输入数目和类型: 4 个单端,单极;4 个单端,双极
产品目录页面: 779 (CN2011-ZH PDF)
配用: EVAL-AD7734EBZ-ND - BOARD EVALUATION FOR AD7734
AD7734
Data Sheet
Rev. A | Page 14 of 32
REGISTER DESCRIPTION
Table 11. Register Summary
Register
Addr
Dir
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(hex)
Default Value
Communications
00
W
0
R/W
6-Bit Register Address
I/O Port
01
R/W
P0
P1
P0 DIR
P1 DIR
RDYFN
0
SYNC
P0 Pin
P1 Pin
1
0
Revision
02
R
Chip Revision Code
Chip Generic Code
x
0
1
0
Test
03
R/W
24-Bit Manufacturing Test Register
ADC Status
04
R
RDY3
RDY2
RDY1
RDY0
0
Checksum
05
R/W
16-Bit Checksum Register
ADC Zero-Scale Calibration
06
R/W
24-Bit ADC Zero-Scale Calibration Register
800000h
ADC Full-Scale
07
R/W
24-Bit ADC Full-Scale Register
800000h
Channel Data1
08–0B
R
16-/24-Bit Data Registers
8000h
Channel Zero-Scale Cal.1
10–13
R/W
24-Bit Channel Zero-Scale Calibration Registers
800000h
Channel Full-Scale Cal. 1
18–1B
R/W
24-Bit Channel Full-Scale Calibration Registers
200000h
Channel Status1
20–23
R
0
CH1
CH0
0/P0
RDY/P1
NOREF
SIGN
OVR
Channel Number
0
Channel Setup1
28–2B
R/W
0
Stat OPT
ENABLE
0
RNG1
RNG0
0
Channel Conversion Time1
30–33
R/W
CHOP
FW (7-Bit Filter Word)
1
11h
Mode2
38–3B
R/W
MD2
MD1
MD0
CLKDIS
DUMP
Cont RD
24/16 BIT
CLAMP
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
Idle Mode
0
1
Continuous Conversion Mode
0
1
0
Single Conversion Mode
0
1
Power-Down (Standby) Mode
1
0
ADC Zero-Scale Self-Calibration
1
0
1
For Future Use
1
0
Channel Zero-Scale System Calibration
1
Channel Full-Scale System Calibration
Table 13. Input Range Summary
RNG1
RNG0
Nominal Input Voltage Range
0
±10 V
0
1
0 V to +10 V
1
0
±5 V
1
0 V to +5 V
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