參數(shù)資料
型號： MAX145BMJA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： ADC
英文描述： +2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin レMAX
中文描述： 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8
封裝： CERAMIC, DIP-8
文件頁數(shù)： 1/16頁
文件大?。?/td> 240K
代理商： MAX145BMJA
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
General Desc ription
The MAX144/MAX145 low-power, 12-bit analog-to-
digital converters (ADCs) are available in 8-pin μMAX
and DIP packages. Both devices operate with a single
+2.7V to +5.25V supply and feature a 7.4μs succes-
sive-approximation ADC, automatic power-down, fast
wake-up (2.5μs), an on-chip clock, and a high-speed,
3-wire serial interface.
Power consumption is only 3.2mW (V
DD
= +3.6V) at the
maximum sampling rate of 108ksps. At slower through-
put rates, the automatic shutdown (0.2μA) further
reduces power consumption.
The MAX144 provides 2-channel, single-ended opera-
tion and accepts input signals from 0 to V
REF
. The
MAX145 accepts pseudo-differential inputs ranging
from 0 to V
REF
. An external clock accesses data-
through the 3-wire serial interface, which is SPI ,
QSPI, and MICROWIRE-compatible.
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
demanding power-consumption and space require-
ments. For pin-compatible 10-bit ADCs, see the
MAX157 and MAX159.
Applic ations
Instrumentation
Test Equipment
Medical Instruments
System Supervision
Battery-Powered Systems
Portable Data Logging
Isolated Data Acquisition
Process-Control Monitoring
Features
o
Single-Supply Operation (+2.7V to +5.25V)
o
Two Single-Ended Channels (MAX144)
One Pseudo-Differential Channel (MAX145)
o
Low Power
0.9mA (108ksps, +3V Supply)
100μA (10ksps, +3V Supply)
10μA (1ksps, +3V Supply)
0.2μA (Power-Down Mode)
o
Internal Track/Hold
o
108ksps Sampling Rate
o
SPI/QSPI/MICROWIRE-Compatible 3-Wire
Serial Interface
o
Space-Saving 8-Pin μMAX Package
o
Pin-Compatible 10-Bit Versions Available
M
+2.7V, Low-Power, 2-Channel, 108ksps,
S erial 12-Bit ADCs in 8-Pin μMAX
________________________________________________________________ Maxim Integrated Products
1
CS/SHDN
REF
GND
1
2
8
7
SCLK
DOUT
( ) ARE FOR MAX145 ONLY
CH0 (CH+)
CH1 (CH-)
V
DD
μ
MAX/DIP
TOP VIEW
3
4
6
5
MAX144
MAX145
19-1387; Rev 0; 11/98
PART
MAX144
ACUA
MAX144BCUA
MAX144ACPA
MAX144BCPA
MAX144BC/D
MAX144AEUA -40°C to +85°C
MAX144BEUA
MAX144AEPA
MAX144BEPA -40°C to +85°C
MAX144AMJ A
MAX144BMJ A
MAX145
ACUA
MAX145BCUA
MAX145ACPA
MAX145BCPA
MAX145BC/D
MAX145AEUA
MAX145BEUA
MAX145AEPA -40°C to +85°C
MAX145BEPA
MAX145AMJ A
MAX145BMJ A -55°C to +125°C
0°C to +70°C
0°C to +70°C 8 Plastic DIP
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
8 μMAX
8 μMAX
8 Plastic DIP
*Dice are specified at T
A
= +25°C, DC parameters only.
**Contact factory for availability.
Pin Configuration
Ordering Information
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
INL
(LSB)
±0.5
±1
±0.5
±1
±1
±0.5
±1
±0.5
±1
±0.5
±1
±0.5
±1
±0.5
±1
±1
±0.5
±1
±0.5
±1
±0.5
±1
0°C to +70°C
Dice*
8 μMAX
8 μMAX
8 Plastic DIP
8 Plastic DIP
8 CERDIP**
8 CERDIP**
8 μMAX
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C 8 μMAX
0°C to +70°C 8 Plastic DIP
-55°C to +125°C
-55°C to +125°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
8 Plastic DIP
Dice*
8 μMAX
8 μMAX
8 Plastic DIP
8 Plastic DIP
8 CERDIP**
8 CERDIP**
-40°C to +85°C
-55°C to +125°C
-40°C to +85°C
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