參數資料
| 型號： | MAX1220BETX+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 19/43頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC/DAC 12BIT 36-TQFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 類型： | ADC，DAC |
| 分辨率（位）： | 12 b |
| 采樣率（每秒）： | 225k |
| 數據接口： | 串行 |
| 電壓電源： | 模擬和數字 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 36-WFQFN 裸露焊盤 |
| 供應商設備封裝： | 36-TQFN 裸露焊盤（6x6） |
| 包裝： | 管件 |
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MAX1220/MAX1257/MAX1258
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
26
______________________________________________________________________________________
Table 5c. Clock Mode 11
REFSEL1
REFSEL0
VOLTAGE
REFERENCE
OVERRIDE
CONDITIONS
AUTOSHUTDOWN
REF2
CONFIGURATION
AIN
Internal reference turns off after scan is complete. If
internal reference is turned off, there is a programmed
delay of 218 external conversion clock cycles.
00
Internal (DAC
and ADC)
Temperature
Internal reference required. There is a programmed
delay of 244 external conversion clock cycles for the
internal reference. Temperature-sensor output appears
at DOUT after 188 further external clock cycles.
AIN14/AIN6
AIN
Internal reference not used.
01
External single-
ended (REF1
for DAC and
REF2 for ADC)
Temperature
Internal reference required. There is a programmed
delay of 244 external conversion clock cycles for the
internal reference. Temperature-sensor output appears
at DOUT after 188 further external clock cycles.
REF2
AIN
Default reference mode. Internal reference turns off
after scan is complete. If internal reference is turned
off, there is a programmed delay of 218 external
conversion clock cycles.
10
Internal (ADC)
and external
REF1 (DAC)
Temperature
Internal reference required. There is a programmed
delay of 244 external conversion clock cycles for the
internal reference. Temperature-sensor output appears
at DOUT after 188 further external clock cycles.
AIN14/AIN6
AIN
Internal reference not used.
11
External
differential
(ADC), external
REF1 (DAC)
Temperature
Internal reference required. There is a programmed
delay of 244 external conversion clock cycles for the
internal reference. Temperature-sensor output appears
at DOUT after 188 further external clock cycles.
REF2
Table 5d. Differential Select Modes
DIFFSEL1 DIFFSEL0
FUNCTION
0
No data follows the command setup byte. Unipolar-mode and bipolar-mode registers remain unchanged.
0
1
No data follows the command setup byte. Unipolar-mode and bipolar-mode registers remain unchanged.
1
0
1 byte of data follows the command setup byte and is written to the unipolar-mode register.
1
1 byte of data follows the command setup byte and is written to the bipolar-mode register.
The ADC reference is always on if any of the following
conditions are true:
1) The FBGON bit is set to one in the reset register.
2) At least one DAC output is powered up and
REFSEL[1:0] (in the setup register) = 00.
3) At least one DAC is powered down through the
100k
to VREF and REFSEL[1:0] = 00.
If any of the above conditions exist, the ADC reference
is always on, but there is a 188 clock-cycle delay
before temperature-sensor measurements begin, if
requested.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1220BETX+ | 功能描述:ADC / DAC多通道 12-Bit 8Ch 300ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 轉換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX1220BETX+T | 功能描述:ADC / DAC多通道 12-Bit 8Ch 300ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 轉換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX1220BETX-T | 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX1221BETX | 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX1221BETX+ | 功能描述:ADC / DAC多通道 12-Bit 8Ch 300ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 轉換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-40 |
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