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參數(shù)資料
| 型號(hào)： | AD7739 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | ADC |
| 英文描述： | 8-Channel, High Throughput, 24-Bit Sigma-Delta ADC |
| 中文描述： | 8通道，高吞吐量，24位Σ-Δ模數(shù)轉(zhuǎn)換器 |
| 文件頁數(shù)： | 16/32頁 |
| 文件大?。?/td> | 380K |
| 代理商： | AD7739 |
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AD7739
I/O PORT REGISTER
8 Bits, Read/Write Register, Address 0x01, Default Value 0x30 + Digital Input Value × 0x40
Rev. 0 | Page 16 of 32
The bits in this register are used to configure and access the digital I/O port on the AD7739.
Bit
Mnemonic
Default
Bit 7
P0
P0 Pin
Bit 6
P1
P1 Pin
Bit 5
P0 DIR
1
Bit 4
P1 DIR
1
Bit 3
RDYFN
0
Bit 2
REDPWR
0
Bit 1
0
0
Bit 0
SYNC
0
Bit
7, 6
Mnemonic
P0, P1
Description
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.
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.
This bit is used to control the function of the RDY pin on the AD7739. 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 go low only if all
enabled channels have unread data.
Reduced Power. If this bit is set to 1, the AD7739 works in the reduced power mode. The maximum MCLK
frequency is limited to 4 MHz in the reduced power mode.
This bit must be 0 for proper operation.
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 AD7739 modulator and digital
filter with other devices in the system.
5, 4
P0 DIR, P1 DIR
3
RDYFN
2
REDPWR
1
0
0
SYNC
REVISION REGISTER
8 Bits, Read-Only Register, Address 0x02, Default Value 0x09 + Chip Revision × 0x10
Bit
Mnemonic
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Chip Revision Code
Chip Generic Code
x
x
x
x
1
0
0
1
Bit
7–4
3–0
Mnemonic
Chip Revision Code
Chip Generic Code
Description
4-Bit Factory Chip Revision Code
On the AD7739, these bits will read back as 0x09.
TEST REGISTER
24 Bits, Read/Write Register, Address 0x03
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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| AD7739BRU-REEL7 | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 3.05Msps 24-bit Serial 24-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 15.133KSPS 24BIT SERL 24TSSOP - Tape and Reel |
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