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參數(shù)資料
| 型號： | MAX191BCNG+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT 100KSPS W/REF 24DIP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 15 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 100k |
| 數(shù)據(jù)接口： | MICROWIRE?，并聯(lián)，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 1.07W |
| 電壓電源： | 雙 ± |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 24-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 24-PDIP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 2 個(gè)單端，單極；2 個(gè)單端，雙極；1 個(gè)差分，單極；1 個(gè)差分，雙極 |
| 產(chǎn)品目錄頁面： | 1393 (CN2011-ZH PDF) |
Wire-wrap boards are not recommended. Board layout
should ensure that digital- and analog-signal lines are
separated from each other. Do not run analog and digi-
tal (especially clock) lines parallel to one another, or
digital lines underneath the ADC package.
Figure 23 shows the recommended system ground
connections. Establish a single-point ground (“star”
ground point) at AGND, separate from the logic
ground. Connect all other analog grounds and DGND
to it. No other digital-system ground should be con-
nected to this single-point analog ground. The ground
return to the power supply for this star ground should
be low impedance and as short as possible for noise-
free operation.
High-frequency noise in the VDD power supply may
affect the high-speed comparator in the ADC. Bypass
these supplies to the single-point analog ground with
MAX191
Low-Power, 12-Bit Sampling ADC
with Internal Reference and Power-Down
______________________________________________________________________________________
21
MAX191
AIN +
AIN -
D0–D11
VIN
R7
10k
R8
10k
VREF
R6
10k
R5
10k
R1
10k
R2
100
R3
10k
R4
49.9
VREF
R9*
20k
0.1
F*
R10*
49.9
* CONNECT AIN- TO AGND WHEN USING DUAL SUPPLIES
MAX480
Figure 21b. Offset (±10mV) and Gain (±1%) Trim Circuit
01 . . . 111
01 . . . 110
00 . . . 010
00 . . . 001
11 . . . 111
11 . . . 110
00 . . . 000
10 . . . 001
10 . . . 000
11 . . . 101
0V
VREF - 1LSB
VREF
––––
2
0V
SINGLE SUPPLY
VREF
AIN- = ––––
2
(
)
DUAL SUPPLY
AIN- = 0V
VREF
–––– - 1LSB
2
-VREF
––––
2
Figure 22. Bipolar Transfer Function
SUPPLIES
+5V
-5V
GND
VDD
AGND
VSS DGND
+5V
DGND
R* = 10
DIGITAL
CIRCUITRY
*OPTIONAL
MAX191
Figure 23. Power-Supply Grounding Connection
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX191BCNG+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12Bit 100ksps 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 |
| MAX191BCWG | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) 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 |
| MAX191BCWG+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12Bit 100ksps 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 |
| MAX191BCWG+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12Bit 100ksps 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 |
| MAX191BCWG-T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) 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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