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參數(shù)資料
| 型號(hào)： | AD7327BRUZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 24/37頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT+ SAR 8CHAN 20TSSOP |
| 標(biāo)準(zhǔn)包裝： | 75 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 500k |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 17mW |
| 電壓電源： | 雙 ± |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 8 個(gè)單端，單極；8 個(gè)單端，雙極；4 個(gè)差分，單極；4 個(gè)差分，雙極 |
| 產(chǎn)品目錄頁面： | 777 (CN2011-ZH PDF) |
| 配用： | EVAL-AD7327CBZ-ND - BOARD EVALUATION FOR AD7327 |
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Data Sheet
AD7327
Rev. B | Page 29 of 36
AUTOSHUTDOWN MODE
(PM1 = 1, PM0 = 0)
Once the autoshutdown mode is selected, the AD7327 auto-
matically enters shutdown on the 15th SCLK rising edge. In
autoshutdown mode, all internal circuitry is powered down.
The AD7327 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 autoshutdown, returns to track as the AD7327
begins to power up. The power-up from autoshutdown is 500 s.
When the control register is programmed to transition to
autoshutdown mode, it does so on the 15th SCLK rising edge.
Figure 50 shows the part entering autoshutdown mode. The
AD7327 automatically begins to power up on the CS rising
edge. The tPOWER-UP is required before a valid conversion, initiated
by bringing the CS signal low, can take place. Once this valid
conversion is complete, the AD7327 powers down again on the
15th SCLK 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 AD7327 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 AD7327 to power up much faster,
which allows faster throughput rates.
As is the case with autoshutdown mode, the AD7327 enters
standby on the 15th SCLK rising edge once the control register is
updated (see Figure 50). The part retains information in the
registers during standby. The AD7327 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 700 ns. The user should
ensure that 700 ns have elapsed before bringing CS low to
attempt a valid conversion. Once this valid conversion is
complete, the AD7327 again returns to standby on the 15th
SCLK rising edge. The CS signal must remain low to keep the
part in standby mode.
Figure 50 shows the part entering autoshutdown mode. The
sequence of events is the same when entering autostandby
mode. In Figure 50, the power management bits are configured
for autoshutdown. 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
05401-
042
Figure 50. Entering Autoshutdown/Autostandby Mode
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參數(shù)描述 |
|---|---|
| AD7327BRUZ-REEL | 功能描述:IC ADC 12BIT+SAR 8CHAN 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極 |
| AD7327BRUZ-REEL7 | 功能描述:IC ADC 12BIT+ SAR 8CHAN 20TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極 |
| AD7328 | 制造商:AD 制造商全稱:Analog Devices 功能描述:8-Channel, Software-Selectable True Bipolar Input, 12-Bit Plus Sign ADC |
| AD7328BRUZ | 功能描述:IC ADC 12BIT+ SAR 8CHAN 20TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:iCMOS® 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個(gè)單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD7328BRUZ | 制造商:Analog Devices 功能描述:A/D Converter (A-D) IC |
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