參數(shù)資料
型號: MAX1294EVKIT
廠商: Maxim Integrated Products
文件頁數(shù): 18/19頁
文件大小: 0K
描述: EVALUATION KIT FOR MAX1294
產(chǎn)品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 1
ADC 的數(shù)量: 1
位數(shù): 12
采樣率(每秒): 420k
數(shù)據(jù)接口: 并聯(lián)
輸入范圍: ±VREF/2
在以下條件下的電源(標準): 10mW @ 420kSPS
工作溫度: 0°C ~ 70°C
已用 IC / 零件: MAX1294,MAX1295
已供物品:
MAX1294/MAX1296
420ksps, +5V, 6-/2-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
8
_______________________________________________________________________________________
Pin Description (continued)
PIN
MAX1296
REF
21
25
MAX1294
NAME
Bandgap Reference Buffer Output/External Reference Input. Add a 4.7F capacitor
to GND when using the internal reference.
FUNCTION
26
22
VDD
Analog +5V Power Supply. Bypass with a 0.1F capacitor to GND.
27
23
D11
Three-State Digital Output (D11)
28
24
D10
Three-State Digital Output (D10)
_______________Detailed Description
Converter Operation
The MAX1294/MAX1296 ADCs use a successive-approx-
imation (SAR) conversion technique and an input
track/hold (T/H) stage to convert an analog input signal to
a 12-bit digital output. This output format provides easy
interface to standard microprocessors (Ps). Figure 2
shows the simplified internal architecture of the MAX1294/
MAX1296.
T/H
THREE-STATE, BIDIRECTIONAL
I/O INTERFACE
12
17k
12
SUCCESSIVE-
APPROXIMATION
REGISTER
CHARGE REDISTRIBUTION
12-BIT DAC
CLOCK
ANALOG
INPUT
MULTIPLEXER
CONTROL LOGIC
&
LATCHES
REF
REFADJ
1.22V
REFERENCE
D0–D11
12-BIT DATA BUS
(CH5)
(CH4)
(CH3)
(CH2)
CH1
CH0
COM
CLK
CS
( ) ARE FOR MAX1294 ONLY.
WR
RD
INT
VDD
GND
MAX1294
MAX1296
AV =
2.05
COMP
Figure 2. Simplified Functional Diagram
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