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Rainbow-electronics MAX1299 Manual de usuario

Busca en linea o descarga Manual de usuario para Sensores Rainbow-electronics MAX1299. Rainbow Electronics MAX1299 User Manual Manual de usuario

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General Description
The MAX1298/MAX1299 implement local and remote
temperature sensing with 12-bit resolution, using +5V
and +3V supply voltages, respectively. Accuracy is
±1°C from 0 to +70°C, with no calibration needed. The
devices feature an algorithmic switched-capacitor ana-
log-to-digital converter (ADC), an on-chip clock, and a
3-wire serial interface compatible with SPI™, QSPI™,
and MICROWIRE™.
The MAX1298/MAX1299 also perform fully differential
voltage measurements with 12-bit resolution and sepa-
rate track-and-hold (T/H) for positive and negative
inputs. Both devices accept versatile input modes con-
sisting of two 3-channel signal pairs, five 1-channel sig-
nals relative to a floating common, or V
DD
/4 relative to
ground. An external reference may be used for more
accurate voltage measurements.
Typical power consumption is only 1.3mW (MAX1299).
A shutdown mode and two standby modes provide
multiple strategies for prolonging battery life in portable
applications that require limited sampling throughput.
The MAX1298/MAX1299 are available in 16-pin SSOP
packages.
________________________Applications
Temperature/Voltage Supervision of
Workstations and Communications Equipment
Hand-Held Instruments
Medical Equipment
Industrial Process Control
Features
♦ Local and Remote Temperature Sensing
♦ 12-Bit Resolution for Temperature and Voltage
Inputs
♦ ±1°C Accuracy from -40°C to +85°C
♦ Fully Differential Inputs
♦ Single-Supply Operation
+4.75V to +5.25V (MAX1298)
+2.7V to +3.6V (MAX1299)
♦ 3-Wire SPI/QSPI/MICROWIRE-Compatible
Interface
♦ Internal Precision Voltage Reference
2.50V (MAX1298)
1.20V (MAX1299)
♦ Space-Saving 16-Pin SSOP Package
MAX1298/MAX1299
12-Bit Serial-Output Temperature Sensors
with 5-Channel ADC
________________________________________________________________ Maxim Integrated Products 1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
AIN1 AIN0
AIN5
REF
GND
V
DD
SCLK
DIN
DOUT
TOP VIEW
MAX1298
MAX1299
SSOP
SHO
AIN2
GND
AIN3
AIN4
SSTRB
CS
Pin Configuration
19-1726; Rev 0; 5/00
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Ordering Information
*Future product—contact factory for availability.
Typical Operating Circuit appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
PART
TEMP.
RANGE
PIN-
PACKAGE
TEMP. SENSE
ACCURACY
(°C)
MAX1298AEAE
-40°C to +85°C 16 SSOP
±0.75
MAX1298BEAE*
-40°C to +85°C 16 SSOP
±1.0
MAX1298CEAE
-40°C to +85°C 16 SSOP
±4.0
MAX1299AEAE
-40°C to +85°C 16 SSOP
±0.75
MAX1299BEAE*
-40°C to +85°C 16 SSOP
±1.0
MAX1299CEAE
-40°C to +85°C 16 SSOP
±4.0
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Indice de contenidos

Pagina 1 - MAX1298/MAX1299

General DescriptionThe MAX1298/MAX1299 implement local and remotetemperature sensing with 12-bit resolution, using +5Vand +3V supply voltages, respect

Pagina 2

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC10 _________________________________________________________________________

Pagina 3

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC____________________________________________________________________________

Pagina 4

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC12 _________________________________________________________________________

Pagina 5

13 fCLKsWARMUP44 fCLKsCONVERTIONCYCLES 2–12REFERENCESAMPLING3 fCLKsSUBTRACTIONAND WRITE TOOUTPUT REGISTER48 fCLKsCONVERTION CYCLES 1–1213 fCLKsWARMUPI

Pagina 6

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC14 _________________________________________________________________________

Pagina 7

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC____________________________________________________________________________

Pagina 8

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC16 _________________________________________________________________________

Pagina 9

The transistor must be a small-signal type with a baseresistance less than 100Ω. Tight specifications for for-ward current gain (+50 to +150, for exam

Pagina 10

MAX1298/MAX1299Layout, Grounding, and BypassingFor best performance, use PC boards. Do not use wire-wrap boards. Board layout should ensure that digit

Pagina 11

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC____________________________________________________________________________

Pagina 12

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC2 __________________________________________________________________________

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MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADCMaxim cannot assume responsibility for use of any circuitry other than circu

Pagina 14

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC____________________________________________________________________________

Pagina 15

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC4 __________________________________________________________________________

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MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC____________________________________________________________________________

Pagina 17

MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC6 __________________________________________________________________________

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MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC____________________________________________________________________________

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MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC8 __________________________________________________________________________

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MAX1298/MAX129912-Bit Serial-Output Temperature Sensors with 5-Channel ADC____________________________________________________________________________

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