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MAX1112CAP+ Datasheet

  • MAX1112CAP+

  • IC, 8BIT ADC, SMD, 1112, SSOP20; Resolution (Bits):8bit; Sam...

  • 20頁

  • Maxim   Maxim

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19-1231; Rev 1; 10/98
KIT
ATION
EVALU
E
BL
AVAILA
+5V, Low-Power, Multi-Channel,
Serial 8-Bit ADCs
General Description
____________________________Features
o
+4.5V to +5.5V Single Supply
o
Low Power: 135碌A(chǔ) at 50ksps
13碌A(chǔ) at 1ksps
o
8-Channel Single-Ended or 4-Channel Differential
Inputs (MAX1112)
o
4-Channel Single-Ended or 2-Channel Differential
Inputs (MAX1113)
o
Internal Track/Hold; 50kHz Sampling Rate
o
Internal 4.096V Reference
o
SPI/QSPI/MICROWIRE-Compatible Serial Interface
o
Software-Configurable Unipolar or Bipolar Inputs
o
Total Unadjusted Error: 鹵1LSB (max)
鹵0.3LSB (typ)
MAX1112/MAX1113
The MAX1112/MAX1113 are low-power, 8-bit, 8-chan-
nel analog-to-digital converters (ADCs) that feature an
internal track/hold, voltage reference, clock, and serial
interface. They operate from a single +4.5V to +5.5V
supply and consume only 135碌A(chǔ) while sampling at
rates up to 50ksps. The MAX1112鈥檚 8 analog inputs
and the MAX1113鈥檚 4 analog inputs are software-con-
figurable, allowing unipolar/bipolar and single-
ended/differential operation.
Successive-approximation conversions are performed
using either the internal clock or an external serial-inter-
face clock. The full-scale analog input range is deter-
mined by the 4.096V internal reference, or by an
externally applied reference ranging from 1V to V
DD
.
The 4-wire serial interface is compatible with the SPI鈩?
QSPI鈩? and MICROWIRE鈩?serial-interface standards.
A serial-strobe output provides the end-of-conversion
signal for interrupt-driven processors.
The MAX1112/MAX1113 have a software-program-
mable, 2碌A(chǔ) automatic power-down mode to minimize
power consumption. Using power-down, the supply
current is reduced to 13碌A(chǔ) at 1ksps, and only 82碌A(chǔ) at
10ksps. Power-down can also be controlled using the
SHDN
input pin. Accessing the serial interface automat-
ically powers up the device.
The MAX1112 is available in 20-pin SSOP and DIP
packages. The MAX1113 is available in small 16-pin
QSOP and DIP packages.
Ordering Information
PART
MAX1112CPP
MAX1112CAP
MAX1112C/D
TEMP. RANGE
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
PIN-PACKAGE
20 Plastic DIP
20 SSOP
Dice*
*Dice
are specified at T
A
= +25擄C, DC parameters only.
Ordering Information continued at end of data sheet.
Functional Diagram
CS
SCLK
DIN
SHDN
CH0
CH1
CH2
CH3
CH4*
CH5*
CH6*
CH7*
COM
INPUT
SHIFT
REGISTER
INT
CLOCK
CONTROL
LOGIC
OUTPUT
SHIFT
REGISTER
ANALOG
INPUT
MUX
T/H
CLOCK
IN
8-BIT
SAR ADC
OUT
REF
DOUT
SSTRB
________________________Applications
Portable Data Logging
Hand-Held Measurement Devices
Medical Instruments
System Diagnostics
Solar-Powered Remote Systems
4鈥?0mA-Powered Remote
Data-Acquisition Systems
V
DD
DGND
Pin Configurations appear at end of data sheet.
REFOUT
REFIN
+4.096V
REFERENCE
MAX1112
MAX1113
AGND
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
*MAX1112 ONLY
________________________________________________________________
Maxim Integrated Products
1
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.

MAX1112CAP+ 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 66

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 8

  • 50k

  • MICROWIRE?，QSPI?，串行，SPI?

  • 1

  • 680µW

  • 單電源

  • 0°C ~ 70°C

  • 表面貼裝

  • 20-SSOP（0.209"，5.30mm 寬）

  • 20-SSOP

  • 管件

  • 8 個(gè)單端，單極；8 個(gè)單端，雙極；4 個(gè)偽差分，單極；4 個(gè)偽差分，雙極

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