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MAX1203BCAP+ Datasheet

  • MAX1203BCAP+

  • A/D Converter (A-D) IC; Resolution (Bits):12; Sample Rate:13...

  • 24頁(yè)

  • Maxim   Maxim

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19-1173; Rev 2; 5/98
KIT
ATION
EVALU
BLE
AVAILA
5V, 8-Channel, Serial, 12-Bit ADCs
with 3V Digital Interface
General Description
Features
o
8-Channel Single-Ended or 4-Channel
Differential Inputs
o
Operates from Single +5V or Dual 鹵5V Supplies
o
User-Adjustable Output Logic Levels
(2.7V to 5.25V)
o
Low Power: 1.5mA (operating mode)
2碌A(chǔ) (power-down mode)
o
Internal Track/Hold, 133kHz Sampling Rate
o
Internal 4.096V Reference (MAX1202)
o
SPI/MICROWIRE/TMS320-Compatible
4-Wire Serial Interface
o
Software-Configurable Unipolar/Bipolar Inputs
o
20-Pin DIP/SSOP
MAX1202/MAX1203
The MAX1202/MAX1203 are 12-bit data-acquisition
systems specifically designed for use in applications
with mixed +5V (analog) and +3V (digital) supply volt-
ages. They operate with a single +5V analog supply or
dual 鹵5V analog supplies, and combine an 8-channel
multiplexer, high-bandwidth track/hold, and serial inter-
face with high conversion speed and low power con-
sumption.
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
MAX1202/MAX1203 use either the internal clock or an
external serial-interface clock to perform successive-
approximation analog-to-digital conversions. The serial
interface operates at up to 2MHz.
The MAX1202 features an internal 4.096V reference,
while the MAX1203 requires an external reference. Both
parts have a reference-buffer amplifier that simplifies
gain trim. They also have a VL pin that is the power
supply for the digital outputs. Output logic levels (3V,
3.3V, or 5V) are determined by the value of the voltage
applied to this pin.
These devices provide a hard-wired
SHDN
pin and two
software-selectable power-down modes. Accessing the
serial interface automatically powers up the devices. A
quick turn-on time enables the MAX1202/MAX1203 to
be shut down between conversions, allowing the user
to optimize supply currents. By customizing power-
down between conversions, supply current can drop
below 10碌A(chǔ) at reduced sampling rates.
The MAX1202/MAX1203 are available in 20-pin SSOP
and DIP packages, and are specified for the commer-
cial, extended, and military temperature ranges.
Ordering Information
PART
MAX1202ACPP
MAX1202BCPP
MAX1202ACAP
MAX1202BCAP
MAX1202BC/D
TEMP. RANGE PIN-PACKAGE
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
20 Plastic DIP
20 Plastic DIP
20 SSOP
20 SSOP
Dice*
INL
(LSB)
鹵1/2
鹵1
鹵1/2
鹵1
鹵1
Ordering Information continued at end of data sheet.
*Dice
are specified at T
A
= +25擄C, DC parameters only.
Pin Configuration
TOP VIEW
CH0
1
2
3
4
5
6
7
8
9
20 V
DD
19 SCLK
18 CS
Applications
5V/3V Mixed-Supply Systems
Data Acquisition
High-Accuracy Process Control
Battery-Powered Instruments
Medical Instruments
Typical Operating Circuit appears at end of data sheet.
SPI is a registered trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corp.
CH1
CH2
CH3
CH4
CH5
CH6
CH7
V
SS
MAX1202
MAX1203
17 DIN
16 SSTRB
15 DOUT
14 VL
13 GND
12 REFADJ
11 REF
SHDN 10
DIP/SSOP
________________________________________________________________
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.

MAX1203BCAP+ 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

  • -

  • 12

  • 133k

  • MICROWIRE?，串行，SPI?

  • 1

  • 7.5mW

  • 雙 ±

  • 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)差分，單極；4 個(gè)差分，雙極

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