參數(shù)資料
型號： MAX125CEAX+D
廠商： Maxim Integrated Products
文件頁數(shù)： 12/15頁
文件大?。?/td> 0K
描述： IC DAS 14BIT 2X4CH 36-SSOP
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 30
類型： 數(shù)據(jù)采集系統(tǒng)（DAS）
分辨率（位）： 14 b
數(shù)據(jù)接口： 并聯(lián)
電壓電源： 模擬和數(shù)字，雙 ±
電源電壓： ±4.75 V ~ 5.25 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 36-BSOP（0.295"，7.50mm 寬）
供應商設(shè)備封裝： 36-SSOP
包裝： 管件
產(chǎn)品目錄頁面： 1393 (CN2011-ZH PDF)
_______________Detailed Description
The MAX125/MAX126 use a successive-approximation
conversion technique and four simultaneous-sampling
track/hold (T/H) amplifiers to convert analog signals into
14-bit digital outputs. Each T/H has two multiplexed
inputs, allowing a total of eight inputs. Each T/H output
is converted and stored in memory to be accessed
sequentially by the parallel interface with successive
read cycles. The MAX125/MAX126 internal micro-
sequencer can be programmed to digitize one, two,
three, or four inputs sampled simultaneously from either
of the two banks of four inputs (see Figure 2).
The conversion timing and control sequences are
derived from a 16MHz external clock, the CONVST
MAX125/MAX126
2x4-Channel, Simultaneous-Sampling
14-Bit DAS
6
_______________________________________________________________________________________
NAME
FUNCTION
1, 2
CH2B, CH2A
Channel 2 Multiplexed Inputs, single-ended
3, 4
CH1B, CH1A
Channel 1 Multiplexed Inputs, single-ended
PIN
5
AVDD
+5V ±5% Analog Supply Voltage
6
REFIN
External Reference Input/Internal Reference Output. Bypass with a 0.1F capacitor to AGND.
17
DVDD
+5V ±5% Digital Supply Voltage
9–16
D13–D6
Data Bits. D13 = MSB.
8, 36
AGND
Analog Ground. Both pins must be tied to ground.
7
REFOUT
Reference-Buffer Output. Bypass with a 4.7F capacitor to AGND.
26
CS
Chip-Select Input (active-low)
25
CLK
Clock Input (duty cycle must be 30% to 70%).
21–24
D3/A3–D0/A0
Bidirectional Data Bits/Address Bits. D0/A0 = LSB.
19, 20
D5, D4
Data Bits
18
DGND
Digital Ground
______________________________________________________________Pin Description
27
WR
Write Input (active-low)
28
RD
Read Input (active-low)
29
CONVST
Conversion-Start Input. Rising edge initiates sampling and conversion sequence.
30
INT
Interrupt Output. Falling edge indicates the end of a conversion sequence.
31
AVSS
-5V ±5% Analog Supply Voltage
32, 33
CH4A, CH4B
Channel 4 Multiplexed Inputs, single-ended
34, 35
CH3A, CH3B
Channel 3 Multiplexed Inputs, single-ended
Figure 1. Load Circuit for Access Time and Bus Relinquish Time
TO OUTPUT
PIN
120pF
1.0mA
1.6mA
1.6V
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MAX125EVB16 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MAX125B16 Eval Kit 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
MAX125EVKIT 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MAX125/126 Eval Kit 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
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