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参数资料
| 型号： | EVAL-AD7734EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/32页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7734 |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 24 |
| 采样率（每秒）： | 15.4k |
| 数据接口： | 串行 |
| 输入范围： | ±10 V |
| 在以下条件下的电源（标准）： | 85mW @ 5V |
| 工作温度： | -40°C ~ 105°C |
| 已用 IC / 零件： | AD7734 |
| 已供物品： | 板，缆线，CD |
| 产品目录页面： | 779 (CN2011-ZH PDF) |
| 相关产品： | AD7734BRUZ-REEL7TR-ND - IC ADC 24BIT 4CH SIG-DEL 28TSSOP AD7734BRUZ-REEL-ND - IC ADC 24BIT 4CH SIG-DEL 28TSSOP AD7734BRUZ-ND - IC ADC 24BIT 4-CH 28-TSSOP AD7734BRU-ND - IC ADC 24BIT 4-CH 28-TSSOP |
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AD7734
Data Sheet
Rev. A | Page 16 of 32
I/O PORT REGISTER
8 Bits, Read/Write Register, Address 01h, Default Value 30h + Digital Input Value × 40h
The bits in this register are used to configure and access the digital I/O port on the AD7734.
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
P0
P1
P0 DIR
P1 DIR
RDYFN
0
SYNC
Default
P0 Pin
P1 Pin
1
0
Bit
Mnemonic
Description
7, 6
P0, P1
When the P0 and P1 pins are configured as outputs, the P0 and P1 bits determine the pins’ output level. When
the P0 and P1 pins are configured as inputs, the P0 and P1 bits reflect the current input level on the pins.
5, 4
P0 DIR, P1 DIR
These bits determine whether the P0 and P1 pins are configured as inputs or outputs. When set to 1, the
corresponding pin will be an input; when reset to 0, the corresponding pin will be an output.
3
RDYFN
This bit is used to control the function of the RDY pin on the AD7734. When this bit is reset to 0, the RDY pin
goes low when any channel has unread data. When this bit is set to 1, the RDY pin will only go low if all
enabled channels have unread data.
2, 1
0
These bits must be 0 for proper operation.
0
SYNC
This bit enables the SYNC pin function. By default, this bit is 0 and SYNC/P1 can be used as a digital I/O pin.
When the SYNC bit is set to 1, the SYNC pin can be used to synchronize the AD7734 modulator and digital
filter with other devices in the system.
REVISION REGISTER
8 Bits, Read-Only Register, Address 02h, Default Value 02h + Chip Revision × 10h
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
Chip Revision Code
Chip Generic Code
Default
x
0
1
0
Bit
Mnemonic
Description
7–4
Chip Revision Code
4-Bit Factory Chip Revision Code
3–0
Chip Generic Code
On the AD7734, these bits will read back as 02h.
TEST REGISTER
24 Bits, Read/Write Register, Address 03h
This register is used for testing the part in the manufacturing process. The user must not change the default configuration of this register.
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