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MAX186DC/D Datasheet

  • MAX186DC/D

  • 低功耗、8通道、串行12位ADC

  • 0頁

  • MAXIM   MAXIM

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19-0123; Rev. 4; 8/96
KIT
ATION
EVALU
BLE
AVAILA
Low-Power, 8-Channel,
Serial 12-Bit ADCs
____________________________Features
o
8-Channel Single-Ended or 4-Channel
Differential Inputs
o
Single +5V or 鹵5V Operation
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 (MAX186)
o
SPI-, QSPI-, Microwire-, TMS320-Compatible
4-Wire Serial Interface
o
Software-Configurable Unipolar or Bipolar Inputs
o
20-Pin DIP, SO, SSOP Packages
o
Evaluation Kit Available
_______________General Description
The MAX186/MAX188 are 12-bit data-acquisition sys-
tems that combine an 8-channel multiplexer, high-band-
width track/hold, and serial interface together with high
conversion speed and ultra-low power consumption.
The devices operate with a single +5V supply or dual
鹵5V supplies. The analog inputs are software config-
urable for unipolar/bipolar and single-ended/differential
operation.
The 4-wire serial interface directly connects to SPI鈩?
QSPI鈩?and Microwire鈩?devices without external logic. A
serial strobe output allows direct connection to TMS320
family digital signal processors. The MAX186/MAX188
use either the internal clock or an external serial-interface
clock to perform successive-approximation A/D conver-
sions. The serial interface can operate beyond 4MHz
when the internal clock is used.
The MAX186 has an internal 4.096V reference while the
MAX188 requires an external reference. Both parts
have a reference-buffer amplifier that simplifies gain
trim .
The MAX186/MAX188 provide a hard-wired
SHDN
pin
and two software-selectable power-down modes.
Accessing the serial interface automatically powers up
the devices, and the quick turn-on time allows the
MAX186/MAX188 to be shut down between every
conversion. Using this technique of powering down
between conversions, supply current can be cut to
under 10碌A at reduced sampling rates.
The MAX186/MAX188 are available in 20-pin DIP and
SO packages, and in a shrink small-outline package
(SSOP), that occupies 30% less area than an 8-pin DIP.
For applications that call for a parallel interface, see the
MAX180/MAX181 data sheet. For anti-aliasing filters,
consult the MAX274/MAX275 data sheet.
MAX186/MAX188
______________Ordering Information
PART
鈥?/div>
MAX186_CPP
MAX186_CWP
MAX186_CAP
MAX186DC/D
MAX186_EPP
MAX186_EWP
MAX186_EAP
MAX186_MJP
TEMP. RANGE
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
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-55擄C to +125擄C
PIN-PACKAGE
20 Plastic DIP
20 SO
20 SSOP
Dice*
20 Plastic DIP
20 SO
20 SSOP
20 CERDIP**
Ordering Information continued on last page.
鈥?/div>
NOTE: Parts are offered in grades A, B, C and D (grades defined
in Electrical Characteristics). When ordering, please specify grade.
Contact factory for availability of A-grade in SSOP package.
* Dice are specified at +25擄C, DC parameters only.
* * Contact factory for availability and processing to MIL-STD-883.
____________________Pin Configuration
TOP VIEW
CH0 1
CH1 2
CH2 3
CH3 4
CH4 5
CH5 6
CH6 7
CH7 8
V
SS
9
SHDN 10
20 V
DD
19 SCLK
18 CS
________________________Applications
Portable Data Logging
Data-Acquisition
High-Accuracy Process Control
Automatic Testing
Robotics
Battery-Powered Instruments
Medical Instruments
SPI and QSPI are registered trademarks of Motorola.
Microwire is a registered trademark of National Semiconductor.
MAX186
MAX188
17 DIN
16 SSTRB
15 DOUT
14 DGND
13 AGND
12 REFADJ
11 VREF
DIP/SO/SSOP
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

MAX186DC/D PDF文件相關型號

MAX186EVKIT,MAX187BC/D

MAX186DC/D 產(chǎn)品屬性

  • Maxim Integrated Products

  • 1

  • 8

  • SAR

  • 133 KSPs

  • 12 bit

  • Single Ended, Differential

  • 4-Wire (SPI, Microwire, QSPI, TMS320)

  • 4.096 V

  • 6 V

  • - 0.3 V

  • 640 mW

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