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MAX1261|MAX1263

更新时间： 2024-11-26 23:45:43
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描述
250ksps. +3V. 8-/4-Channel. 12-Bit ADCs with +2.5V Reference and Parallel Interface

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MAX1261|MAX1263 数据手册

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19-2719; Rev 0; 04/03  
250ksps, +3V, 8-/4-Channel, 12-Bit ADCs  
with +2.5V Reference and Parallel Interface  
General Description  
Features  
The MAX1261/MAX1263 low-power, 12-bit analog-to-  
digital converters (ADCs) feature a successive-approxi-  
mation ADC, automatic power-down, fast wake-up  
(2µs), an on-chip clock, +2.5V internal reference, and a  
high-speed, byte-wide parallel interface. They operate  
ꢀ 12-Bit Resolution, ±±0. ꢀLB ꢀineꢁaitꢂ  
ꢀ +3V Lingle Opeaꢁtion  
ꢀ Usea-Adjustꢁble ꢀogic ꢀevel (+108V to +306V)  
ꢀ Inteanꢁl +20.V Refeaence  
with a single +3V analog supply and feature a V  
LOGIC  
ꢀ Loftwꢁae-Configuaꢁble, Anꢁlog Input Multiplexea  
8-Chꢁnnel Lingle Ended/  
pin that allows them to interface directly with a +1.8V to  
+5.5V digital supply.  
4-Chꢁnnel Pseudo-Diffeaentiꢁl (MAX1261)  
4-Chꢁnnel Lingle Ended/  
2-Chꢁnnel Pseudo-Diffeaentiꢁl (MAX1263)  
Power consumption is only 5.7mW (V  
= V  
) at  
LOGIC  
DD  
the maximum sampling rate of 250ksps. Two software-  
selectable power-down modes enable the MAX1261/  
MAX1263 to be shut down between conversions;  
accessing the parallel interface returns them to normal  
operation. Powering down between conversions can  
cut supply current to under 10µA at reduced sampling  
rates.  
ꢀ Loftwꢁae-Configuaꢁble, Unipolꢁa/Bipolꢁa Inputs  
ꢀ ꢀow Powea  
109mA (2.±ksps)  
10±mA (1±±ksps)  
4±±µA (1±ksps)  
2µA (Lhutdown)  
Both devices offer software-configurable analog inputs  
for unipolar/bipolar and single-ended/pseudo-differen-  
tial operation. In single-ended mode, the MAX1261 has  
eight input channels and the MAX1263 has four input  
channels (four and two input channels, respectively,  
when in pseudo-differential mode).  
ꢀ Inteanꢁl 3MHz Full-Powea Bꢁndwidth Taꢁck/Hold  
ꢀ Bꢂte-Wide Pꢁaꢁllel (8 + 4) Inteafꢁce  
ꢀ Lmꢁll Footpaint  
28-Pin QLOP (MAX1261)  
24-Pin QLOP (MAX1263)  
Excellent dynamic performance and low power, com-  
bined with ease of use and small package size, make  
these converters ideal for battery-powered and data-  
acquisition applications or for other circuits with demand-  
ing power consumption and space requirements.  
Pin Configurations  
TOP VIEW  
The MAX1261 is available in a 28-pin QSOP package,  
while the MAX1263 is available in a 24-pin QSOP. For  
pin-compatible +5V, 12-bit versions, refer to the  
MAX1262/MAX1264 data sheet.  
HBEN  
D7  
1
2
3
4
5
6
7
8
9
28  
27  
V
V
LOGIC  
DD  
D6  
26 REF  
25 REFADJ  
24 GND  
23 COM  
22 CH0  
21 CH1  
20 CH2  
19 CH3  
18 CH4  
17 CH5  
16 CH6  
15 CH7  
D5  
Applications  
D4  
MAX1261  
Industrial Control Systems  
Energy Management  
Data Logging  
D3/D11  
D2/D10  
D1/D9  
D0/D8  
Patient Monitoring  
Touch Screens  
Data-Acquisition Systems  
INT 10  
RD 11  
WR 12  
CLK 13  
CS 14  
Ordering Information  
INꢀ  
PART  
PIN-PACKAGE  
TEMP RANGE  
(ꢀLB)  
0.5  
1
0°C to +70°C  
0°C to +70°C  
MAX1261ACEI  
MAX1261BCEI  
MAX1261AEEI  
MAX1261BEEI  
28 QSOP  
28 QSOP  
28 QSOP  
28 QSOP  
QLOP  
-40°C to +85°C  
-40°C to +85°C  
0.5  
1
Pin Configurations continued at end of data sheet.  
Ordering Information continued at end of data sheet.  
Typical Operating Circuits appear at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...20

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 		250ksps, +3V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
MAX1261ACEI+ MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Parallel, Word Access, PDSO28, 0
MAX1261ACEI+T MAXIM

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MAX1261ACEI-T MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Parallel, Word Access, PDSO28, 0
MAX1261AEEI MAXIM

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 		250ksps, +3V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
MAX1261AEEI-T MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Parallel, Word Access, PDSO28, 0
MAX1261BCEI MAXIM

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 		250ksps, +3V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
MAX1261BCEI+ MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Parallel, Word Access, PDSO28, 0
MAX1261BCEI+T MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Parallel, Word Access, PDSO28, 0
MAX1261BCEI-T MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Parallel, Word Access, PDSO28, 0

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