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参数资料
| 型号： | AD7477AAKSZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/29页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 1MSPS LP SC70-6 |
| 标准包装： | 10,000 |
| 位数： | 10 |
| 采样率（每秒）： | 1M |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 17.5mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-TSSOP，SC-88，SOT-363 |
| 供应商设备封装： | SC-70-6 |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个单端，单极 |
| 配用： | EVAL-AD7477CBZ-ND - BOARD EVALUATION FOR AD7477 |
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AD7476A/AD7477A/AD7478A
Rev. F | Page 19 of 28
SDATA
SCLK
CS
1
10
12
14
16
AD7476A/AD7477A/AD7478A
02930-020
VALID DATA
Figure 20. Normal Mode Operation
THREE-STATE
SDATA
SCLK
CS
1
10
12
14
16
2
02930-021
Figure 21. Entering Power-Down Mode
INVALID DATA
SDATA
SCLK
CS
1
10
12
14
16
A
1
16
VALID DATA
THE PART IS FULLY
POWERED UP WITH
VIN FULLY ACQUIRED
THE PART
BEGINS TO
POWER UP
02930-022
Figure 22. Exiting Power-Down Mode
When power supplies are first applied to the AD7476A/AD7477A/
AD7478A, the ADC can power up in either the power-down or
normal modes. Because of this, it is best to allow a dummy cycle
to elapse to ensure that the part is fully powered up before
attempting a valid conversion. Likewise, if it is intended to keep
the part in the power-down mode while not in use and the user
wishes the part to power up in power-down mode, the dummy
cycle can be used to ensure that the device is in power-down by
executing a cycle such as that shown in Figure 22. Once supplies
are applied to the AD7476A/AD7477A/AD7478A, the power-up
time is the same as that when powering up from the power-down
mode. It takes approximately 1 μs to power up fully if the part
powers up in normal mode. It is not necessary to wait 1 μs before
executing a dummy cycle to ensure the desired mode of operation.
Instead, a dummy cycle can occur directly after power is
supplied to the ADC. If the first valid conversion is performed
directly after the dummy conversion, care must be taken to
ensure that an adequate acquisition time has been allowed. As
mentioned earlier, when powering up from the power-down
mode, the part returns to track upon the first SCLK edge
applied after the falling edge of CS. However, when the ADC
initially powers up after supplies are applied, the track-and-hold
is already in track. This means, assuming one has the facility to
monitor the ADC supply current, if the ADC powers up in the
desired mode of operation and thus a dummy cycle is not
required to change the mode, a dummy cycle is not required to
place the track-and-hold into track.
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相关代理商/技术参数 |
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|---|---|
| AD7477AAKSZ-REEL3 | 制造商:AD 制造商全称:Analog Devices 功能描述:2.35 V to 5.25 V, 1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SC70 |
| AD7477AAKSZ-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 10-bit Serial 6-Pin SC-70 T/R |
| AD7477AAKSZ-REEL73 | 制造商:AD 制造商全称:Analog Devices 功能描述:2.35 V to 5.25 V, 1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SC70 |
| AD7477AARM | 制造商:Rochester Electronics LLC 功能描述:10-BIT LOW POWER ADC IN USOIC PKG I.C - Bulk 制造商:Analog Devices 功能描述:IC 10BIT ADC SMD 7477 MSOP8 |
| AD7477AARM-REEL | 制造商:Analog Devices 功能描述:ADC SGL SAR 1MSPS 10-BIT SERL 8MSOP - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:10-BIT LOW POWER ADC IN USOIC PKG I.C - Tape and Reel |
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