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参数资料
| 型号： | AD7738BRU-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 6/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT 8CH SIG-DEL 28TSSOP |
| 标准包装： | 1,000 |
| 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： | 带卷 (TR) |
| 输入数目和类型： | 8 个单端，单极；8 个单端，双极；4 个差分，单极；4 个差分，双极 |
| 配用： | EVAL-AD7738EBZ-ND - BOARD EVAL FOR AD7738 |
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REV. 0
–14–
AD7738
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 pin on the AD7738.
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
P0
P1
P0 DIR
P1 DIR
RDY FN
0
SYNC
Default
P0 Pin
P1 Pin
1
0
Bit
Mnemonic
Description
7P0
When the AINCOM/P0 pin is configured as a digital output, the P0 bit determines the pin’s output level.
6P1When the P1 pin is configured as an output, the P1 bit determines the pin’s output level. When the P1
pin is configured as an input, the P1 bit reflects the current input level on the pin.
5
P0 DIRWhen set to 1, the AINCOM/P0 pin is configured as an analog input. When set to 0, the AINCOM/P0
pin is configured as a digital output.
4
P1 DIRThis bit determines whether P1 pin is configured as an input or an output. When set to 1, the P1 pin will
be a digital input; when reset to 0, the pin will be a digital output.
3
RDY FN
This bit is used to control the function of the
RDY pin on the AD7738. 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 zero 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 EN bit is set to 1, the
SYNC pin can be used to synchronize the
AD7738 modulator and digital filter with other devices in the system.
Revision Register
8 Bits, Read-Only Register, Address 02h, Default Value 01h + 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
Bit
Mnemonic
Description
7–4
Chip Revision Code
4-Bit Factory Chip Revision Code
3–0
Chip Generic Code
On the AD7738, these bits will read back as 01h.
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.
ADC Status Register
8 Bits, Read-Only Register, Address 04h, Default Value 00h
In conversion modes, the register bits reflect the individual channel status. When a conversion is complete, the corresponding Channel
Data register is updated and the corresponding RDY bit is set to 1. When the Channel Data register is read, the corresponding bit is
reset to 0. The bit is also reset to 0 when no read operation has taken place and the result of the next conversion is being updated to
the Channel Data register. Writing to the Mode register resets all the bits to 0.
In calibration modes, all the register bits are reset to 0 while a calibration is in progress and all the bits are set to 1 when the
calibration is complete.
The
RDY pin output is related to the content of ADC Status register as defined by the RDY Function bit in the I/O Port register.
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
RDY7
RDY6
RDY5
RDY4
RDY3
RDY2
RDY1
RDY0
Default
0
The RDY0 bit corresponds to Channel 0, RDY1 bit to Channel 1, and so on.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7738BRUZ | 功能描述:IC ADC 24BIT 8-CH 28-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7738BRUZ | 制造商:Analog Devices 功能描述:IC 24BIT ADC SMD 7738 TSSOP28 |
| AD7738BRUZ-REEL | 功能描述:IC ADC 24BIT 8CH SIG-DEL 28TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7738BRUZ-REEL7 | 功能描述:IC ADC 24BIT 8CH SIG-DEL 28TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7739 | 制造商:AD 制造商全称:Analog Devices 功能描述:8-Channel, High Throughput, 24-Bit Sigma-Delta ADC |
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