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MAX1204ACAP Datasheet

  • MAX1204ACAP

  • 5V、8通道、串行、10位ADC，3V数字接口

  • 609.58KB

  • 24页

  • MAXIM   MAXIM

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19-1179; Rev 0; 1/97
5V, 8-Channel, Serial, 10-Bit ADC
with 3V Digital Interface
_______________General Description
The MAX1204 is a 10-bit data-acquisition system
specifically designed for use in applications with mixed
+5V (analog) and +3V (digital) supply voltages. It oper-
ates with a single +5V analog supply or dual 卤5V ana-
log supplies, and combines an 8-channel multiplexer,
internal track/hold, and serial interface with high con-
version speed and low power consumption.
A 4-wire serial interface connects directly to
SPI鈩?Microwire鈩?devices without external logic, and a
serial strobe output allows direct connection to
TMS320-family digital signal processors. The MAX1204
uses either the internal clock or an external serial-
interface clock to perform successive-approximation
analog-to-digital conversions. The serial interface oper-
ates at up to 2MHz.
The MAX1204 features an internal 4.096V reference and
a reference-buffer amplifier that simplifies gain trim. It
also has a VL pin that supplies power to the digital out-
puts. Output logic levels (3V, 3.3V, or 5V) are determined
by the value of the voltage applied to this pin.
A hard-wired
SHDN
pin and two software-selectable
power-down modes are provided. Accessing the serial
interface automatically powers up the device. A quick
turn-on time allows the MAX1204 to be shut down
between conversions, enabling the user to optimize
supply currents. By customizing power-down between
conversions, supply current can drop below 10碌A at
reduced sampling rates.
The MAX1204 is available in 20-pin SSOP and DIP
packages, and is specified for the commercial, extend-
ed, and military temperature ranges.
____________________________Features
o
8-Channel Single-Ended or 4-Channel
Differential Inputs
o
Operates from +5V Single or 卤5V Dual Supplies
o
User-Adjustable Output Logic Levels
(2.7V to 5.25V)
o
Low Power: 1.5mA (operating mode)
2碌A (power-down mode)
o
Internal Track/Hold, 133kHz Sampling Rate
o
Internal 4.096V Reference
o
SPI/Microwire/TMS320-Compatible
4-Wire Serial Interface
o
Software-Configurable Unipolar/Bipolar Inputs
o
20-Pin DIP/SSOP
o
Pin-Compatible 12-Bit Upgrade: MAX1202
MAX1204
______________Ordering Information
PART
MAX1204ACPP
MAX1204BCPP
MAX1204ACAP
MAX1204BCAP
TEMP. RANGE PIN-PACKAGE
0掳C to +70掳C
0掳C to +70掳C
0掳C to +70掳C
0掳C to +70掳C
20 Plastic DIP
20 Plastic DIP
20 SSOP
20 SSOP
INL
(LSB)
卤1/2
卤1
卤1/2
卤1
Ordering Information continued at end of data sheet.
__________________Pin Configuration
TOP VIEW
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
V
SS
1
2
3
4
5
6
7
8
9
20 V
DD
19 SCLK
18 CS
________________________Applications
5V/3V Mixed-Supply Systems
Data Acquisition
Process Control
Battery-Powered Instruments
Medical Instruments
MAX1204
17 DIN
16 SSTRB
15 DOUT
14 VL
13 GND
12 REFADJ
11 REF
Typical Operating Circuit appears on last page.
SPI is a registered trademark of Motorola, Inc.
Microwire is a registered trademark of National Semiconductor Corp.
SHDN 10
DIP/SSOP
1
________________________________________________________________
Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

MAX1204ACAP 产品属性

  • Maxim Integrated Products

  • 1

  • 8

  • SAR

  • 133 KSPs

  • 10 bit

  • Single Ended, Differential

  • 4-Wire (SPI, Microwire, TMS320)

  • 66 dB

  • 4.096 V

  • 6 V

  • - 0.3 V

  • 640 mW

  • + 70 C

  • SSOP-20

  • 0 C

  • 5 V

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