Rainbow-electronics MAX159 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Sensores Rainbow-electronics MAX159. Rainbow Electronics MAX159 User Manual Manual do Utilizador

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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.
General Description
The MAX157/MAX159 low-power, 10-bit analog-to-digi-
tal converters (ADCs) are available in 8-pin µMAX and
DIP packages. Both devices operate with a single
+2.7V to +5.25V supply and feature a 7.4µs succes-
sive-approximation ADC, automatic power-down, fast
wake-up (2.5µs), an on-chip clock, and a high-speed,
3-wire serial interface.
Power consumption is only 3.2mW (V
DD
= +3.6V) at the
maximum sampling rate of 108ksps. At slower through-
put rates, the 0.2µA automatic shutdown further
reduces power consumption.
The MAX157 provides 2-channel, single-ended opera-
tion and accepts input signals from 0 to V
REF
. The
MAX159 accepts pseudo-differential inputs ranging
from 0 to V
REF
. An external clock accesses data
through the 3-wire serial interface, which is SPI™,
QSPI™, and MICROWIRE™ compatible.
Excellent dynamic performance and low power, com-
bined with ease of use and a small package size, make
these converters ideal for battery-powered and data
acquisition applications, or for other circuits with
demanding power-consumption and space require-
ments. For pin-compatible 12-bit upgrades, see the
MAX144/MAX145 data sheet.
Applications
Battery-Powered Systems Instrumentation
Portable Data Logging Test Equipment
Isolated Data Acquisition Medical Instruments
Process-Control Monitoring System Supervision
Features
Single-Supply Operation (+2.7V to +5.25V)
Two Single-Ended Channels (MAX157)
Single Pseudo-Differential Channel (MAX159)
Low Power
0.9mA (at 108ksps, +3V)
100µA (at 10ksps, +3V)
10µA (at 1ksps, +3V)
<0.2µA (power-down mode)
Internal Track/Hold
108ksps Sampling Rate
SPI/QSPI/MICROWIRE-Compatible 3-Wire
Serial Interface
Space-Saving 8-Pin µMAX Package
Pin-Compatible 12-Bit Upgrades Available
MAX157/MAX159
+2.7V, Low-Power, 2-Channel,
108ksps, Serial 10-Bit ADCs in 8-Pin µMAX
________________________________________________________________
Maxim Integrated Products
1
CS/SHDN
REFGND
1
2
8
7
SCLK
DOUT
( ) ARE FOR MAX159 ONLY.
CH0 (CH+)
CH1 (CH-)
V
DD
µMAX/DIP
TOP VIEW
3
4
6
5
MAX157
MAX159
19-1388; Rev 0; 11/98
Pin Configuration
Ordering Information
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
*
Contact factory for availability.
±18 CERDIP*-55°C to +125°CMAX159BMJA
±0.58 CERDIP*-55°C to +125°CMAX159AMJA
±18 Plastic DIP-40°C to +85°CMAX159BEPA
±0.58 Plastic DIP-40°C to +85°CMAX159AEPA
±18 µMAX-40°C to +85°CMAX159BEUA
±1
±0.5
±1
±0.5
±1
±0.5
±1
±0.5
±1
±0.5
±0.5
±1
±0.5
±1
±0.5
INL
(LSB)
8 CERDIP*
8 CERDIP*
8 Plastic DIP-40°C to +85°C
-55°C to +125°C
-55°C to +125°CMAX157BMJA
MAX157AMJA
MAX157BEPA
8 Plastic DIP
8 µMAX-40°C to +85°C
-40°C to +85°CMAX157AEPA
MAX157BEUA
8 µMAX
8 Plastic DIP0°C to +70°C
-40°C to +85°CMAX159AEUA
MAX159BCPA
8 Plastic DIP
8 µMAX
8 µMAX0°C to +70°C
0°C to +70°C
0°C to +70°CMAX159ACPA
MAX159BCUA
MAX159ACUA
8 µMAX
8 Plastic DIP0°C to +70°C
-40°C to +85°CMAX157AEUA
MAX157BCPA
8 Plastic DIP
8 µMAX
8 µMAX
PIN-
PACKAGE
TEMP.
RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°CMAX157ACPA
MAX157BCUA
MAX157ACUA
PART
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Página 1 - +2.7V, Low-Power, 2-Channel

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.General Descript

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX10 _________________________________________________________________

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etc. Therefore, SNR is computed by taking the ratio ofthe RMS signal to the RMS noise (which includes allspectral components minus the fundamental), t

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MAX157/MAX159QSPI InterfaceUsing the high-speed QSPI interface with CPOL = 0and CPHA = 0, the MAX157/MAX159 supports a maxi-mum fSCLKof 2.17MHz. The Q

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star-point (Figure 11) connecting the two ground sys-tems (analog and digital). For lowest-noise operation,ensure the ground return to the star ground

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX14 _________________________________________________________________

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX____________________________________________________________________

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAXMaxim cannot assume responsibility for use of any circuitry other th

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX2 __________________________________________________________________

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MHz+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX______________________________________________________________________________

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX4 __________________________________________________________________

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX____________________________________________________________________

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX6 __________________________________________________________________

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX____________________________________________________________________

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MAX157/MAX159+2.7V, Low-Power, 2-Channel,108ksps, Serial 10-Bit ADCs in 8-Pin µMAX8 __________________________________________________________________

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Selecting Clock ModeTo start the conversion process on the MAX157/MAX159, pull CS/SHDN low. At CS/SHDN’s fallingedge, the part wakes up, the internal

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