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参数资料
| 型号： | AD7851KRZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/36页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT SRL 333KSPS 24-SOIC |
| 标准包装： | 31 |
| 位数： | 14 |
| 采样率（每秒）： | 333k |
| 数据接口： | 8051，QSPI?，串行，SPI? µP |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 89.25mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | 0°C ~ 85°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 W |
| 包装： | 管件 |
| 输入数目和类型： | 1 个伪差分，单极；1 个伪差分，双极 |
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–11–
REV. B
AD7851
CONTROL REGISTER
The arrangement of the control register is shown below. The control register is a write-only register and contains 14 bits of data. The
control register is selected by putting two 1s in ADDR1 and ADDR0. The function of the bits in the control register are described
below. The power-up status of all bits is 0.
MSB
ZERO
PMGT1
PMGT0
RDSLT1
RDSLT0
2/3 MODE
CONVST
CALMD
CALSLT1
CALSLT0
STCAL
LSB
Control Register Bit Function Descriptions
Bit No.
Mnemonic
Comment
13
ZERO
These four bits must be set to 0 when writing to the control register.
12
ZERO
11
ZERO
10
ZERO
9PMGT1
Power Management Bits. These two bits are used with the
SLEEP pin for putting the part into various
8PMGT0
power-down modes (see Power-Down section for more details).
7
RDSLT1
Theses two bits determine which register is addressed for the read operations. See Table II.
6
RDSLT0
52/
3 MODE
Interface Mode Select Bit. With this bit set to 0, Interface Mode 2 is enabled. With this bit set to 1,
Interface Mode 1 is enabled where DIN is used as an output as well as an input. This bit is set to 0 by
default after every read cycle; thus when using Interface Mode 1, this bit needs to be set to 1 in every
write cycle.
4
CONVST
Conversion Start Bit. A Logic 1 in this bit position starts a single conversion, and this bit is automati-
cally reset to 0 at the end of conversion. This bit may also be used in conjunction with system calibration
(see Calibration section).
3
CALMD
Calibration Mode Bit. A 0 here selects self-calibration and a 1 selects a system calibration (see Table III).
2
CALSLT1
Calibration Selection Bits and Start Calibration Bit. These bits have two functions:
1
CALSLT0
With the STCAL bit set to 1, the CALSLT1 and CALSLT0 bits determine the type of calibration per-
0
STCAL
formed by the part (see Table III). The STCAL bit is automatically reset to 0 at the end of calibration.
With the STCAL bit set to 0, the CALSLT1 and CALSLT0 bits are decoded to address the calibration
register for read/write of calibration coefficients (see section on Calibration Registers for more details).
Table III. Calibration Selection
CALMD
CALSLT1
CALSLT0
Calibration Type
00
0
A full internal calibration is initiated where the internal DAC is calibrated followed by the
internal gain error, and finally the internal offset error is calibrated out. This is the default setting.
00
1
Here the internal gain error is calibrated out followed by the internal offset error calibrated
out.
01
0This calibrates out the internal offset error only.
01
1This calibrates out the internal gain error only.
10
0
A full system calibration is initiated here where first the internal DAC is calibrated, fol-
lowed by the system gain error, and finally the system offset error is calibrated out.
10
1Here the system gain error is calibrated out followed by the system offset error.
11
0This calibrates out the system offset error only.
11
1This calibrates out the system gain error only.
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相关代理商/技术参数 |
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| AD7851KRZ3 | 制造商:AD 制造商全称:Analog Devices 功能描述:14-Bit 333 kSPS Serial A/D Converter |
| AD7851KRZ-REEL | 功能描述:IC ADC 14BIT SRL 333KSPS 24-SOIC 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 |
| AD7851KRZ-REEL3 | 制造商:AD 制造商全称:Analog Devices 功能描述:14-Bit 333 kSPS Serial A/D Converter |
| AD7853 | 制造商:AD 制造商全称:Analog Devices 功能描述:3 V to 5 V Single Supply, 200 kSPS 12-Bit Sampling ADCs |
| AD7853AN | 制造商:Analog Devices 功能描述:ADC Single SAR 200ksps 12-bit Serial 24-Pin PDIP 制造商:Analog Devices 功能描述:ADC SGL SAR 200KSPS 12-BIT SERL 24PDIP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:SELF CAL.SERIAL 12-BIT ADC I.C. - Bulk 制造商:Analog Devices 功能描述:3 V to 5 V Single Supply, 200 kSPS 12-Bit Sampling ADCs |
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