參數(shù)資料
型號(hào)： MAX1249ACPE+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 22/24頁(yè)
文件大?。?/td> 0K
描述： IC ADC 10BIT SERIAL 16-DIP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 25
位數(shù)： 10
采樣率（每秒）： 133k
數(shù)據(jù)接口： MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 842mW
電壓電源： 單電源
工作溫度： 0°C ~ 70°C
安裝類型： 通孔
封裝/外殼： 16-DIP（0.300"，7.62mm）
供應(yīng)商設(shè)備封裝： 16-PDIP
包裝： 管件
輸入數(shù)目和類型： 4 個(gè)單端，單極；4 個(gè)單端，雙極；2 個(gè)差分，單極；2 個(gè)差分，雙極
MAX1248/MAX1249
+2.7V to +5.25V, Low-Power, 4-Channel,
Serial 10-Bit ADCs in QSOP-16
_______________________________________________________________________________________
7
NAME
FUNCTION
1
VDD
Positive Supply Voltage
2–5
CH0–CH3
Sampling Analog Inputs
PIN
6
COM
Ground reference for analog inputs. Sets zero-code voltage in single-ended mode. Must be stable to
±0.5LSB.
7
SHDN
Three-Level Shutdown Input. Pulling SHDN low shuts the MAX1248/MAX1249 down; otherwise, the
devices are fully operational. Pulling SHDN high puts the reference-buffer amplifier in internal compen-
sation mode. Letting SHDN float puts the reference-buffer amplifier in external compensation mode.
12
DOUT
Serial Data Output. Data is clocked out at SCLK’s falling edge. High impedance when CS is high.
11
DGND
Digital Ground
9
REFADJ
Input to the Reference-Buffer Amplifier. To disable the reference-buffer amplifier, tie REFADJ to VDD.
8
VREF
Reference-Buffer Output/ADC Reference Input. Reference voltage for analog-to-digital conversion. In
internal reference mode (MAX1248 only), the reference buffer provides a 2.500V nominal output,
externally adjustable at REFADJ. In external reference mode, disable the internal buffer by pulling
REFADJ to VDD.
16
SCLK
Serial Clock Input. Clocks data in and out of serial interface. In external clock mode, SCLK also sets
the conversion speed. (Duty cycle must be 40% to 60%.)
15
CS
Active-Low Chip Select. Data will not be clocked into DIN unless CS is low. When CS is high, DOUT is
high impedance.
14
DIN
Serial Data Input. Data is clocked in at SCLK’s rising edge.
13
SSTRB
Serial Strobe Output. In internal clock mode, SSTRB goes low when the MAX1248/MAX1249 begin the
A/D conversion and goes high when the conversion is completed. In external clock mode, SSTRB
pulses high for one clock period before the MSB decision. High impedance when CS is high (external
clock mode).
______________________________________________________________Pin Description
VDD
6k
DGND
DOUT
CLOAD
50pF
CLOAD
50pF
DGND
6k
DOUT
a) High-Z to VOH and VOL to VOH
b) High-Z to VOL and VOH to VOL
VDD
6k
DGND
DOUT
CLOAD
50pF
CLOAD
50pF
DGND
6k
DOUT
a) VOH to High-Z
b) VOL to High-Z
Figure 1. Load Circuits for Enable Time
Figure 2. Load Circuits for Disable Time
10
AGND
Analog Ground
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1249ACPE+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 4Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1249AEEE 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1249AEEE+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 4Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1249AEEE+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 4Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1249AEEE-T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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