- 您现在的位置：买卖IC网 > PDF目录1980 > AD7327BRUZ-REEL7 (Analog Devices Inc)IC ADC 12BIT+ SAR 8CHAN 20TSSOP PDF资料下载
参数资料
| 型号： | AD7327BRUZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/37页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT+ SAR 8CHAN 20TSSOP |
| 标准包装： | 1,000 |
| 位数： | 12 |
| 采样率（每秒）： | 500k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 17mW |
| 电压电源： | 双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-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-AD7327CBZ-ND - BOARD EVALUATION FOR AD7327 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页当前第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
AD7327
Rev. B | Page 22 of 36
REGISTERS
The AD7327 has four programmable registers: the control register, sequence register, Range Register 1, and Range Register 2.
These registers are write-only registers.
ADDRESSING REGISTERS
A serial transfer on the AD7327 consists of 16 SCLK cycles. The three MSBs on the DIN line during the 16 SCLK transfer are decoded to
determine which register is addressed. The three MSBs consist of the write bit, the Register Select 1 bit, and the Register Select 2 bit. The
register select bits are used to determine which of the four on-board registers is selected. The write bit determines if the data on the DIN
line following the register select bits loads into the addressed register. If the write bit is 1, the bits load into the register addressed by the register
select bits. If the write bit is 0, the data on the DIN line does not load into any register.
Combinations of the write bit, the Register Select 1 bit, and the Register Select 2 bit other than those specified in Table 8 access registers
for Analog Devices internal use only. Do not access these registers, as doing so may lead to unspecified operation of the device.
Table 8. Decoding Register Select Bits and Write Bit
Write
Register Select 1
Register Select 2
Description
0
Data on the DIN line during this serial transfer is ignored.
1
0
This combination selects the control register. The subsequent 12 bits are loaded into
the control register.
1
0
1
This combination selects Range Register 1. The subsequent 8 bits are loaded into
Range Register 1.
1
0
This combination selects Range Register 2. The subsequent 8 bits are loaded into
Range Register 2.
1
This combination selects the sequence register. The subsequent 8 bits are loaded into
the sequence register.
CONTROL REGISTER
The control register is used to select the analog input channel, analog input configuration, reference, coding, and power mode. The control
register is a write-only, 12-bit register. Data loaded on the DIN line corresponds to the AD7327 configuration for the next conversion. If
the sequence register is being used, data should be loaded into the control register after the range registers and the sequence register have
been initialized. The bit functions of the control register are shown in Table 9 (the power-up status of all bits is 0).
MSB
LSB
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Write
Register
Select 1
Register
Select 2
ADD2
ADD1
ADD0
Mode 1
Mode 0
PM1
PM0
Coding
Ref
Seq1
Seq2
ZERO
0
Table 9. Control Register Details
Bit
Mnemonic
Description
12, 11, 10
ADD2, ADD1,
ADD0
These three channel address bits are used to select the analog input channel for the next conversion if the
sequencer is not being used. If the sequencer is being used, the three channel address bits are used to
select the final channel in a consecutive sequence.
9, 8
Mode 1, Mode 0
These two mode bits are used to select the configuration of the eight analog input pins, VIN0 to VIN7. These
pins are used in conjunction with the channel address bits. On the AD7327, the analog inputs can be
configured as eight single-ended inputs, four fully differential inputs, four pseudo differential inputs, or
seven pseudo differential inputs (see Table 10).
7, 6
PM1, PM0
The power management bits are used to select different power mode options on the AD7327 (see Table 11).
5
Coding
This bit is used to select the type of output coding the AD7327 uses for the next conversion result. If
coding = 0, the output coding is twos complement. If coding = 1, the output coding is straight binary.
When operating in sequence mode, the output coding for each channel is the value written to the coding
bit during the last write to the control register.
4
Ref
The reference bit is used to enable or disable the internal reference. If Ref = 0, the external reference is
enabled and used for the next conversion and the internal reference is disabled. If Ref = 1, the internal
reference is used for the next conversion. When operating in sequence mode, the reference used for each
channel is the value written to the Ref bit during the last write to the control register.
3, 2
Seq1, Seq2
The Sequence 1 and Sequence 2 bits are used to control the operation of the sequencer (see Table 12).
1
ZERO
A 0 should be written to this bit at all times.
相关PDF资料 |
PDF描述 |
|---|---|
| AD7328BRUZ-REEL | IC ADC 12BIT+SAR 8CHAN 20-TSSOP |
| AD7329BRUZ-REEL7 | IC ADC 12BIT+SAR 8CHAN 24-TSSOP |
| AD73311ARSZ | IC ANALOG FRONT END 20-SSOP |
| AD73322LARUZ-REEL | IC PROCESSOR FRONTEND DL 28TSSOP |
| AD73322LYRZ | IC ANALOG FRONT END DUAL 28-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7328 | 制造商:AD 制造商全称:Analog Devices 功能描述:8-Channel, Software-Selectable True Bipolar Input, 12-Bit Plus Sign ADC |
| AD7328BRUZ | 功能描述:IC ADC 12BIT+ SAR 8CHAN 20TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:iCMOS® 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 |
| AD7328BRUZ | 制造商:Analog Devices 功能描述:A/D Converter (A-D) IC |
| AD7328BRUZ-REEL | 功能描述:IC ADC 12BIT+SAR 8CHAN 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:iCMOS® 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7328BRUZ-REEL7 | 功能描述:IC ADC 12BIT+ SAR 8CHAN 20TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:iCMOS® 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
发布紧急采购，3分钟左右您将得到回复。