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參數(shù)資料
| 型號： | MAX1148BCUP+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 9/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 14BIT 116KSPS 20-TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 74 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 116k |
| 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）： | 879mW |
| 電壓電源： | 單電源 |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 8 個單端，單極；8 個單端，雙極；4 個差分，單極；4 個差分，雙極 |
MAX1146–MAX1149
Multichannel, True-Differential,
Serial, 14-Bit ADCs
______________________________________________________________________________________
17
Applications Information
Idle Mode
The device is considered idle when all the bits have been
clocked out or 18 zeros have been clocked in on DIN.
Start Bit
The falling edge of CS alone does not start a conver-
sion. The first logic high clocked into DIN with CS low is
interpreted as a start bit and defines the first bit of the
control byte. The device begins to track on the fifth
falling edge of SCLK after a start bit has been recog-
nized. A conversion starts on the eighth falling edge of
SCLK as the last bit of the control byte is being clocked
in. The start bit is defined as follows:
1) The first high bit clocked into DIN with CS low any
time the converter is idle.
or
2) The first high bit clocked into DIN after bit 5 of a
conversion in progress is clocked onto DOUT
(Figures 10 and 11).
Toggling CS before the current conversion is complete
aborts the conversion and clears the output register.
The fastest the MAX1146–MAX1149 can run with CS held
low between conversions is 18 clocks per conversion.
Figures 10 and 11 show the serial-interface timing neces-
sary to perform a conversion every 18 SCLK cycles.
SCLK
SSTRB
DIN
START SEL2
SEL1
SEL0
PD1
PD0
18
9
16
24
INPUT MUX
INPUT T/H
SET ACCORDING TO PREVIOUS CONTROL BYTE
SET TO CB1
TRACK
HOLD
HIGH-Z
DOUT
tACQ
HIGH-Z
tCONV
CB1
OPEN
RESET TO CB1
D13
D12
D11
D10
D9
D8
D6
D5
D4
D3
D2
D1
D0
D7
CS
SGL/DIF UNI/BIP
Figure 9. Internal Clock Mode Timing—24 Clocks/Conversion Timing
SCLK
SSTRB
DIN
START SEL2
SEL1 SEL0
PD1
PD0
18
INPUT MUX
INPUT T/H
SET ACCORDING TO PREVIOUS
CONTROL BYTE
TRACK
HOLD
DOUT
HIGH-Z
14
TRACK
10
18
11
HOLD
14
D13 D12
10
D5
D4
11
SET TO CB2
SET TO CB1
START SEL2
SEL1 SEL0
PD1
PD0
D13 D12
D5
D4
D3
D2
D1
D0
D3
D2
D1
D0
START SEL2
SEL1 SEL0
15
HOLD
CS
CB1
CB2
tACQ
tCONV
tACQ
SGL/DIF UNI/BIP
UNI/BIP
SGL/DIF
UNI/BIP
SGL/DIF
Figure 10. External Clock Mode—18 Clocks/Conversion Timing
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1148BCUP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 8Ch 116ksps 5V 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 |
| MAX1148BCUP+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 8Ch 116ksps 5V 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 |
| MAX1148BCUP-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 |
| MAX1148BEUP | 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 |
| MAX1148BEUP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 8Ch 116ksps 5V 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 |
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