參數資料
型號： AD7322BRUZ-REEL7
廠商： Analog Devices Inc
文件頁數： 19/37頁
文件大小： 0K
描述： IC ADC 12BIT+ SAR 2CHAN 14TSSOP
標準包裝： 1,000
位數： 12
采樣率（每秒）： 1M
數據接口： DSP，MICROWIRE?，QSPI?，串行，SPI?
轉換器數目： 1
功率耗散（最大）： 30mW
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： 14-TSSOP（0.173"，4.40mm 寬）
供應商設備封裝： 14-TSSOP
包裝： 帶卷 (TR)
輸入數目和類型： 2 個單端，單極；2 個單端，雙極；1 個差分，單極；1 個差分，雙極
配用： EVAL-AD7322CBZ-ND - BOARD EVALUATION FOR AD7322
Data Sheet
AD7322
Rev. B | Page 25 of 36
SEQUENCER OPERATION
The AD7322 can be configured to convert a sequence of
consecutive channels (see Figure 44). This sequence begins by
converting on Channel 0 and ends with a final channel selected
by Bit ADD0 in the control register. To operate the AD7322 in
this mode, set Seq1 to 1 and Seq2 to 0, and then select the final
channel in the sequence by programming Bit ADD0 in the
control register.
When the control register is configured to operate the AD7322
in this mode, the DIN line can be held low, or the write bit can
be set to 0. To return to traditional multichannel operation, a
write to the control register to set Seq1 to 0 and Seq2 to 0 is
necessary.
When Seq1 and Seq2 are both set to 0, or when both are set to 1,
the AD7322 is configured to operate in traditional multichannel
mode, where a write to Channel Address Bit ADD0 in the control
register selects the next channel for conversion.
04
86
3-
0
32
DIN: WRITE TO RANGE REGISTER TO SELECT THE RANGE
FOR THE ANALOG INPUT CHANNELS.
DOUT: CONVERSION RESULT FROM CHANNEL 0, ± 10V
RANGE, SINGLE-ENDED MODE.
CS
DIN: WRITE BIT = 0 OR DIN LINE HELD LOW TO CONTINUE
THROUGH SEQUENCE OF CONSECUTIVE CHANNELS.
DOUT: CONVERSION RESULT FROM CHANNEL1, RANGE AS
SELECTED IN RANGE REGISTER.
CS
DIN: WRITE BIT = 0 OR DIN LINE HELD LOW TO CONTINUE TO
CONVERT THROUGH THE SEQUENCE OF
CONSECUTIVE CHANNELS.
DOUT: CONVERSION RESULT FROM CHANNEL 0, RANGE AS
SELECTED IN RANGE REGISTER.
CS
DIN: WRITE TO CONTROL REGISTER TO SELECT THE FINAL
CHANNEL IN THE CONSECUTIVE SEQUENCE, SET Seq1 = 1
AND Seq2 = 0. SELECT OUTPUT CODING FOR SEQUENCE.
DOUT: CONVERSION RESULT FROM CHANNEL 0,
RANGE SELECTED IN RANGE REGISTER 1,
SINGLE-ENDED MODE.
CS
POWER ON.
DIN TIED LOW/WRITE BIT = 0.
CONTINUOUSLY CONVERT
ON CONSECUTIVE SEQUENCE
OF CHANNELS.
DIN: WRITE TO CONTROL
REGISTER TO STOP THE
SEQUENCE, Seq1 = 0, Seq2 = 0.
DOUT: CONVERSION RESULT
FROM CHANNEL IN SEQUENCE.
CS
STOPPING
A SEQUENCE.
Figure 44. Flowchart for Consecutive Sequence of Channels
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