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参数资料
| 型号： | AD7322BRUZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 22/37页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT+SAR 2CHAN 14-TSSOP |
| 标准包装： | 2,500 |
| 位数： | 12 |
| 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）： | 30mW |
| 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： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个单端，单极；2 个单端，双极；1 个差分，单极；1 个差分，双极 |
| 配用： | EVAL-AD7322CBZ-ND - BOARD EVALUATION FOR AD7322 |
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AD7322
Data Sheet
Rev. B | Page 28 of 36
AUTOSHUTDOWN MODE (PM1 = 1, PM0 = 0)
Once the autoshutdown mode is selected, the AD7322 auto-
matically enters shutdown on the 15th SCLK rising edge. In
autoshutdown mode, all internal circuitry is powered down. The
AD7322 retains information in the registers during autoshutdown.
The track-and-hold is in hold mode during autoshutdown. On
the rising CS edge, the track-and-hold, which was in hold during
shutdown, returns to track as the AD7322 begins to power up.
The power-up from autoshutdown is 500 s.
When the control register is programmed to transition to autoshut-
shows the part entering autoshutdown mode. Once in autoshut-
down mode, the CS signal must remain low to keep the part in
autoshutdown mode. The AD7322 automatically begins to power
up on the CS rising edge. The tPOWER-UP for autoshutdown is
required before a valid conversion, initiated by bringing the
CS signal low, can take place. When this valid conversion is
rising edge. The CS signal must remain low again to keep the part
in autoshutdown mode.
AUTOSTANDBY MODE (PM1 = 0, PM0 = 1)
In autostandby mode, portions of the AD7322 are powered
down, but the on-chip reference remains powered up. The
reference bit in the control register should be 1 to ensure that
the on-chip reference is enabled. This mode is similar to auto-
shutdown, but allows the AD7322 to power up much faster.
This allows faster throughput rates to be achieved.
As is the case with the autoshutdown mode, the AD7322 enters
standby on the 15th SCLK rising edge when the control register
is updated (see Figure 47). The part retains information in the
registers during standby. Once in autostandby mode, the CS
signal must remain low to keep the part in autostandby mode.
The AD7322 remains in standby until it receives a CS rising
edge. The ADC begins to power up on the CS rising edge. On
the CS rising edge, the track-and-hold, which was in hold mode
while the part was in standby, returns to track. The power-up
time from standby is 750 ns.
The user should ensure that 750 ns have elapsed before bringing
CS low to attempt a valid conversion. Once this valid conversion
rising edge. The CS signal must remain low to keep the part in
standby mode.
Figure 47 shows the part entering autoshutdown mode. The
sequence of events is the same when entering autostandby mode.
In Figure 47, the power management bits are configured for auto-
shutdown. For autostandby mode, the power management bits,
PM1 and PM0, should be set to 0 and 1, respectively.
CS
1
16
15
1
16
15
SCLK
SDATA
DIN
VALID DATA
DATA INTO CONTROL REGISTER
tPOWER-UP
CONTROL REGISTER IS LOADED ON THE FIRST 15 CLOCKS,
PM1 = 1, PM0 = 0
PART ENTERS SHUTDOWN MODE
ON THE 15TH RISING SCLK EDGE
AS PM1 = 1, PM0 = 0
PART BEGINS TO POWER
UP ON CS RISING EDGE
THE PART IS FULLY POWERED UP
ONCE
tPOWER-UP HAS ELAPSED
04863-
042
Figure 47. Entering Autoshutdown/Autostandby Mode
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| AD7322BRUZ-REEL7 | 功能描述:IC ADC 12BIT+ SAR 2CHAN 14TSSOP 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: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 |
| AD7322LYRU | 制造商:Analog Devices 功能描述: |
| AD7323 | 制造商:AD 制造商全称:Analog Devices 功能描述:500 kSPS, 4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC |
| AD7323BRUZ | 功能描述:IC ADC 12BIT+ SAR 4CHAN 16TSSOP 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 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 |
| AD7323BRUZ-REEL | 功能描述:IC ADC 12BIT+SAR 4CHAN 16-TSSOP 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: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 |
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