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| 型號： | AD9627ABCPZ-125 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 42/76頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT 1255MSPS 64LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 125M |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 功率耗散（最大）： | 800mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 64-LFCSP-VQ（9x9） |
| 包裝： | 托盤 |
| 輸入數(shù)目和類型： | 4 個單端，單極；2 個差分，單極 |
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AD9627
Rev. B | Page 47 of 76
Addr
(Hex)
Register
Name
Bit 7
(MSB)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
(Hex)
Default
Notes/
Comments
0x117
Signal Monitor
Result
Channel A
Register 1
(Global)
Signal Monitor Result Channel A[15:8]
Read only
0x118
Signal Monitor
Result
Channel A
Register 2
(Global)
Open
Signal Monitor Value Channel A[19:16]
Read only
0x119
Signal Monitor
Result
Channel B
Register 0
(Global)
Signal Monitor Result Channel B[7:0]
Read only
0x11A
Signal Monitor
Result
Channel B
Register 1
(Global)
Signal Monitor Result Channel B[15:8]
Read only
0x11B
Signal Monitor
Result
Channel B
Register 2
(Global)
Open
Signal Monitor Result Channel B[19:16]
Read only
MEMORY MAP REGISTER DESCRIPTIONS
For additional information about functions controlled in
Register 0x00 to Register 0xFF, see Application Note AN-877,
Interfacing to High Speed ADCs via SPI.
Sync Control (Register 0x100)
Bit 7—Signal Monitor Sync Enable
Bit 7 enables the sync pulse from the external SYNC input to
the signal monitor block. The sync signal is passed when Bit 7
and Bit 0 are high. This is continuous sync mode.
Bits[6:3]—Reserved
Bit 2—Clock Divider Next Sync Only
If the master sync enable bit (Address 0x100, Bit0) and the clock
divider sync enable bit (Address 0x100, Bit 1) are high, Bit 2 allows
the clock divider to sync to the first sync pulse it receives and to
ignore the rest. The clock divider sync enable bit (Address 0x100,
Bit 1) resets after it syncs.
Bit 1—Clock Divider Sync Enable
Bit 1 gates the sync pulse to the clock divider. The sync signal is
passed when Bit 1 is high and Bit 0 is high. This is continuous
sync mode.
Bit 0—Master Sync Enable
Bit 0 must be high to enable any of the sync functions.
Fast Detect Control (Register 0x104)
Bits[7:4]—Reserved
Bits[3:1]—Fast Detect Mode Select
These bits set the mode of the fast detect output pins (see Table 17).
Bit 0—Fast Detect Enable
Bit 0 is used to enable the fast detect output pins. When the fast
detect output pins are disabled, the outputs go into a high
impedance state. In LVDS mode, when the outputs are
interleaved, the outputs go high-Z only if both channels are
turned off (power-down/standby/output disabled). If only one
channel is turned off (power-down/standby/output disabled), the
fast detect output pins repeat the data of the active channel.
Coarse Upper Threshold (Register 0x105)
Bits[7:3]—Reserved
Bits[2:0]—Coarse Upper Threshold
These bits set the level required to assert the coarse upper
threshold indication (see Table 21).
Fine Upper Threshold (Register 0x106 and Register 0x107)
Register 0x106, Bits[7:0]—Fine Upper Threshold[7:0]
Register 0x107, Bits[7:5]—Reserved
Register 0x107, Bits[4:0]—Fine Upper Threshold[12:8]
These registers provide the fine upper limit threshold. This 13-bit
value is compared with the 13-bit magnitude from the ADC block.
If the ADC magnitude exceeds this threshold value, the F_UT
flag is set.
Fine Lower Threshold (Register 0x108 and Register 0x109)
Register 0x108, Bits[7:0]—Fine Lower Threshold
[7:0]
Register 0x109, Bits[7:5]—Reserved
Register 0x109, Bits[4:0]—Fine Lower Threshold[12:8]
These registers provide the fine lower limit threshold. This 13-bit
value is compared with the 13-bit magnitude from the ADC
block. If the ADC magnitude is less than this threshold value,
the F_LT flag is set.
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