參數(shù)資料
型號： MAX1257BETM+T
廠商： Maxim Integrated Products
文件頁數(shù)： 18/43頁
文件大?。?/td> 0K
描述： IC ADC/DAC 12BIT 48-TQFN
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 2,500
類型： ADC，DAC
分辨率（位）： 12 b
采樣率（每秒）： 225k
數(shù)據(jù)接口： 串行
電壓電源： 模擬和數(shù)字
電源電壓： 2.7 V ~ 3.6 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 48-WFQFN 裸露焊盤
供應商設(shè)備封裝： 48-TQFN-EP（7x7）
包裝： 帶卷 (TR)
MAX1220/MAX1257/MAX1258
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
______________________________________________________________________________________
25
Table 5. Setup Register*
BIT NAME
BIT
FUNCTION
—
7 (MSB)
Set to zero to select setup register.
—
6
Set to one to select setup register.
CKSEL1
5
Clock mode and
CNVST configuration; resets to one at power-up.
CKSEL0
4
Clock mode and
CNVST configuration.
REFSEL1
3
Reference-mode configuration.
REFSEL0
2
Reference-mode configuration.
DIFFSEL1
1
Unipolar-/bipolar-mode register configuration for differential mode.
DIFFSEL0
0 (LSB)
Unipolar-/bipolar-mode register configuration for differential mode.
Table 5a. Clock Modes*
CKSEL1
CKSEL0
CONVERSION CLOCK
ACQUISITION/SAMPLING
CNVST CONFIGURATION
0
Internal
Internally timed.
CNVST
0
1
Internal
Externally timed by
CNVST.
CNVST
1
0
Internal
Internally timed.
AIN15/AIN7
1
External (3.6MHz max)
Externally timed by SCLK.
AIN15/AIN7
Table 5b. Clock Modes 00, 01, and 10
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 internal-conversion clock cycles.
00
Internal (DAC
and ADC)
Temperature
Internal reference required. There is a programmed
delay of 244 internal-conversion clock cycles for the
internal reference to settle after wake-up.
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 internal-conversion clock cycles for the
internal reference to settle after wake-up.
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 internal-
conversion clock cycles.
10
Internal (ADC)
and external
REF1 (DAC)
Temperature
Internal reference required. There is a programmed
delay of 244 internal-conversion clock cycles for the
internal reference to settle after wake-up.
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 internal-conversion clock cycles for the
internal reference to settle after wake-up.
REF2
*
See below for bit details.
*
See the Clock Modes section.
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MAX1257EVKIT 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 Programmers, Development Systems RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
MAX1258BETM 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)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
MAX1258BETM+ 功能描述:ADC / DAC多通道 12-Bit 16Ch 300ksps 5.5V Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)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
MAX1258BETM+T 功能描述:ADC / DAC多通道 12-Bit 16Ch 300ksps 5.5V Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)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
MAX1258BETM-T 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)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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