参数资料
| 型号： | AD7195BCPZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/45页 |
| 文件大小： | 0K |
| 描述： | IC AFE 24BIT 4.8K 32LFSP |
| 设计资源： | Precision Weigh Scale Design Using AD7195 with Internal PGA and AC Excitation (CN0155) |
| 标准包装： | 1,500 |
| 位数： | 24 |
| 通道数： | 4 |
| 电压 - 电源，模拟： | 4.75 V ~ 5.25 V |
| 电压 - 电源，数字： | 2.7 V ~ 5.25 V |
| 封装/外壳： | 32-WFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-WQ（5x5） |
| 包装： | 带卷 (TR) |
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AD7195
Rev. 0 | Page 24 of 44
OFFSET REGISTER
(RS2, RS1, RS0 = 1, 1, 0; Power-On/Reset = 0x800000)
The offset register holds the offset calibration coefficient for the
ADC. The power-on reset value of the offset register is
0x800000. The AD7195 has four offset registers; therefore, each
channel has a dedicated offset register (see Table 25). Each of
these registers is a 24-bit read/write register. This register is
used in conjunction with its associated full-scale register to
form a register pair. The power-on reset value is automatically
overwritten if an internal or system zero-scale calibration is
initiated by the user. The AD7195 must be placed in power-
down mode or idle mode when writing to the offset register.
FULL-SCALE REGISTER
(RS2, RS1, RS0 = 1, 1, 1; Power-On/Reset = 0x5XXXX0)
The full-scale register is a 24-bit register that holds the full-scale
calibration coefficient for the ADC. The AD7195 has four full-
scale registers; therefore, each channel has a dedicated full-scale
register (see Table 25). The full-scale registers are read/write
registers. However, when writing to the full-scale registers, the
ADC must be placed in power-down mode or idle mode. These
registers are configured at power-on with factory-calibrated
full-scale calibration coefficients, the calibration being performed
at gain = 1. Therefore, every device has different default coeffic-
ients. The default value is automatically overwritten if an
internal or system full-scale calibration is initiated by the user
or if the full-scale register is written to.
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