參數資料
型號: MAX191BENG+
廠商: Maxim Integrated Products
文件頁數: 14/24頁
文件大?。?/td> 0K
描述: IC ADC 12BIT 100KSPS 24-DIP
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 15
位數: 12
采樣率(每秒): 100k
數據接口: MICROWIRE?,并聯,QSPI?,串行,SPI?
轉換器數目: 1
功率耗散(最大): 1.07W
電壓電源: 雙 ±
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 24-DIP(0.300",7.62mm)
供應商設備封裝: 24-PDIP
包裝: 管件
輸入數目和類型: 2 個單端,單極;2 個單端,雙極;1 個差分,單極;1 個差分,雙極
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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相關代理商/技術參數
參數描述
MAX191BENG+ 功能描述:模數轉換器 - ADC 12Bit 100ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX191BEWG 功能描述:模數轉換器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX191BEWG+ 功能描述:模數轉換器 - ADC 12Bit 100ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX191BEWG+T 功能描述:模數轉換器 - ADC 12Bit 100ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX191BEWG-T 功能描述:模數轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32