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參數(shù)資料
| 型號： | AD7992BRMZ-1REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 21/29頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 2CHAN I2C 10MSOP |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 79k |
| 數(shù)據(jù)接口： | I²C，串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 2.2mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 2 個單端，單極 |
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AD7992
Rev. 0 | Page 27 of 28
9
11
SCL
9
S
7-BIT ADDRESS
WA
COMMAND/ADDRESS
POINT BYTE
A
SDA
FIRST DATA BYTE
(MSBs)
A
SECOND DATA BYTE
(LSBs)
FIRST DATA BYTE
(MSBs)
SECOND DATA BYTE
(LSBs)
A
Sr
7-BIT ADDRESS
RA
SDA
9
1
SCL
9
8
ACK BY
AD7992
ACK BY
AD7992
ACK BY
MASTER
ACK BY
MASTER
ACK BY
MASTER
ACK BY
AD7992
A
9
RESULT FROM CH1
RESULT FROM CH2
A/A
03263-0-013
Figure 33. Mode 2 Sequence Operation
MODE 3—AUTOMATIC CYCLE MODE
An automatic conversion cycle can be selected and enabled by
writing a value to the cycle timer register. A conversion cycle
interval can be set up on the AD7992 by programming the
relevant bits in the 8-bit cycle timer register, as decoded in
Table 23. Only the 3 LSBs are used; the 5 MSBs should contain
0s (see the Sample Delay and Bit Trial Delay section). When the
3 LSBs of the register are programmed with any configuration
other than all 0s, a conversion takes place every X ms; the cycle
interval, X, depends on the configuration of these three bits in
the cycle timer register. There are seven different cycle time
intervals to choose from, as shown in Table 23. Once the
conversion has taken place, the part powers down again until
the next conversion occurs. To exit this mode of operation, the
user must program the 3 LSBs of the cycle timer register to
contain all 0s. For cycle interval options, see Table 23.
To select a channel(s) for operation in cycle mode, set the
corresponding channel bit(s), D5 to D4, of the configuration
register. If more than one channel bit is set in the configuration
register, the ADC automatically cycles through the channel
sequence, starting with the lowest channel. Once the sequence
is complete, the ADC starts converting on the lowest channel
again, continuing to loop through the sequence until the cycle
timer register contents are set to all 0s. This mode is useful for
monitoring signals, such as battery voltage and temperature,
alerting only when the limits are violated.
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| AD7993BRU-0 | 功能描述:IC ADC 10BIT 4CH W/I2C 16-TSSOP RoHS:否 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 個單端，單極 |
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