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参数资料
| 型号： | AD7680BRM-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT LP UNIPOLR 8MSOP TR |
| 标准包装： | 1,000 |
| 系列： | PulSAR® |
| 位数： | 16 |
| 采样率（每秒）： | 100k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 26.4mW |
| 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： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个单端，单极 |
AD7680
Rev. A | Page 15 of 24
POWER-DOWN MODE
This mode is intended for use in applications where slower
throughput rates are required. Either the ADC is powered
down between each conversion, or a series of conversions may
be performed at a high throughput rate, and then the ADC is
powered down for a relatively long duration between these
bursts of several conversions. When the AD7680 is in
power-down, all analog circuitry is powered down.
To enter power-down, the conversion process must be
interrupted by bringing CS high anywhere after the second
falling edge of SCLK and before the 10th falling edge of SCLK
as shown in
. Once
CS has been brought high in this
window of SCLKs, the part enters power-down, the conversion
that was initiated by the falling edge of CS is terminated, and
SDATA goes back into three-state. If CS is brought high before
the second SCLK falling edge, the part remains in normal mode
and will not power down. This avoids accidental power-down
due to glitches on the CS line.
In order to exit this mode of operation and power up the
AD7680 again, a dummy conversion is performed. On the
falling edge of CS, the device begins to power up and continues
to power up as long as CS is held low until after the falling edge
of the 10th SCLK. The device is fully powered up once at least
16 SCLKs (or approximately 6 μs) have elapsed and valid data
results from the next conversion as shown in
. If
CS is
brought high before the 10th falling edge of SCLK, regardless of
the SCLK frequency, the AD7680 goes back into power-down
again. This avoids accidental power-up due to glitches on the
CS line or an inadvertent burst of 8 SCLK cycles while CS is low.
So although the device may begin to power-up on the falling
edge of CS, it powers down again on the rising edge of CS as
long as it occurs before the 10th SCLK falling edge.
03643-0-010
SCLK
SDATA
1
2
10
20
THREE-STATE
CS
Figure 17. Entering Power-Down Mode
03643-0-011
110
20
1
20
SDATA
SCLK
CS
INVALID DATA
VALID DATA
THE PART IS FULLY POWERED
UP WITH VIN FULLY ACQUIRED
THE PART BEGINS
TO POWER UP
tPOWER UP
Figure 18. Exiting Power-Down Mode
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7680BRMZ | 功能描述:IC ADC 16BIT LP UNIPOLAR 8-MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 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 |
| AD7680BRMZ | 制造商:Analog Devices 功能描述:IC 16BIT ADC SMD 7680 MSOP8 |
| AD7680BRMZ-REEL | 功能描述:IC ADC 16BIT LP UNIPOLR 8MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 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 |
| AD7680BRMZ-REEL7 | 功能描述:IC ADC 16BIT LP UNIPOLR 8MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 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 |
| AD7682 | 制造商:AD 制造商全称:Analog Devices 功能描述:14-Bit, 8-Channel, 250 kSPS PulSAR ADC |
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