Rainbow-electronics MAX1033 Bedienungsanleitung

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General Description
The MAX1032/MAX1033 multirange, low-power, 14-bit,
successive-approximation, analog-to-digital converters
(ADCs) operate from a single +5V supply and achieve
throughput rates up to 115ksps. A separate digital sup-
ply allows digital interfacing with 2.7V to 5.25V systems
using the SPI™-/QSPI™-/MICROWIRE™-compatible
serial interface. Partial power-down mode reduces the
supply current to 1.3mA (typ). Full power-down mode
reduces the power-supply current to 1µA (typ).
The MAX1032 provides eight (single-ended) or four
(true differential) analog input channels. The MAX1033
provides four (single-ended) or two (true differential)
analog input channels. Each analog input channel is
independently software programmable for seven sin-
gle-ended input ranges (0 to +6V, -6V to 0, 0 to +12V,
-12V to 0, ±3V, ±6V, and ±12V), and three differential
input ranges (±6V, ±12V, ±24V).
An on-chip +4.096V reference offers a small convenient
ADC solution. The MAX1032/MAX1033 also accept an
external reference voltage between 3.800V and 4.136V.
The MAX1032 is available in a 24-pin TSSOP package
and the MAX1033 is available in a 20-pin TSSOP pack-
age. Each device is specified for operation from -40°C
to +85°C.
Applications
Industrial Control Systems
Data-Acquisition Systems
Avionics
Robotics
Features
Software-Programmable Input Range for Each
Channel
Single-Ended Input Ranges
0 to +6V, -6V to 0, 0 to +12V, -12V to 0, ±3V,
±6V, and ±12V
Differential Input Ranges
±6V, ±12V, and ±24V
Eight Single-Ended or Four Differential Analog
Inputs (MAX1032)
Four Single-Ended or Two Differential Analog
Inputs (MAX1033)
±16.5V Overvoltage Tolerant Inputs
Internal or External Reference
115ksps Maximum Sample Rate
Single +5V Power Supply
20-/24-Pin TSSOP Package
MAX1032/MAX1033
8-/4-Channel, ±12V Multirange Inputs,
Serial 14-Bit ADCs
________________________________________________________________ Maxim Integrated Products 1
Pin Configurations
Ordering Information
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
AGND1
AGND2
AV
DD2
AGND3CH2
CH1
CH0
AV
DD1
TOP VIEW
REF
REFCAP
DV
DD
DV
DDO
CH6
CH5
CH4
CH3
16
15
14
13
9
10
11
12
DGND
DGNDO
DOUT
SCLKSSTRB
DIN
CS
CH7
TSSOP
MAX1032
19-3573; Rev 2; 12/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
PIN-PACKAGE
CHANNELS
PKG CODE
MAX1032EUG*
24 TSSOP 8 U24-1
MAX1033EUP
20 TSSOP 4 U20-2
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Pin Configurations continued at end of data sheet.
*Future product—contact factory for availability.
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range.
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Inhaltsverzeichnis

Seite 1 - Serial 14-Bit ADCs

General DescriptionThe MAX1032/MAX1033 multirange, low-power, 14-bit,successive-approximation, analog-to-digital converters(ADCs) operate from a singl

Seite 2

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs10 ____________________________________________________________________________

Seite 3

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs_______________________________________________________________________________

Seite 4

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs12 ____________________________________________________________________________

Seite 5

Detailed DescriptionThe MAX1032/MAX1033 multirange, low-power, 14-bitsuccessive-approximation ADCs operate from a single+5V supply and have a separate

Seite 6

MAX1032/MAX1033Power SuppliesTo maintain a low-noise environment, the MAX1032/MAX1033 provide separate power supplies for eachsection of circuitry. Ta

Seite 7

As a result, the analog input impedance is relativelyconstant over input voltage as shown in Figure 5.Single-ended conversions are internally referenc

Seite 8

MAX1032/MAX1033Figure 8 illustrates the software-selectable differentialanalog input voltage range that produces a valid digitaloutput. Each analog in

Seite 9

Figure 6. Simplified Analog Input CircuitMAX1032MAX1033R2R1VSJ*RSOURCEANALOGSIGNALSOURCER2R1VSJ*RSOURCEANALOGSIGNALSOURCEIN_+IN_+*MINIMIZE RSOURCE TO

Seite 10

Differential Common-Mode RangeThe MAX1032/MAX1033 differential common-moderange (VCMDR) must remain within -14V to +10V toobtain valid conversion resu

Seite 11

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs_______________________________________________________________________________

Seite 12

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs2 _____________________________________________________________________________

Seite 13

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs20 ____________________________________________________________________________

Seite 14

Start BitCommunication with the MAX1032/MAX1033 is accom-plished using the three input data word formats shownin Table 3. Each input data word begins

Seite 15

Mode ControlThe MAX1032/MAX1033 contain one byte-wide mode-control register. The timing diagram of Figure 15 showshow to use the mode-control byte, an

Seite 16

• User supplies one byte of SCLK, then drives CShigh to relieve processor load while the ADCconverts• After SSTRB transitions high, the user suppliest

Seite 17

External Acquisition Mode (Mode 1)The slowest maximum throughput rate is achieved withthe external acquisition method. SCLK controls the acqui-sition

Seite 18

This prevents the MAX1032/MAX1033 from inadvertent-ly exiting full power-down mode because of a CS glitchin a noisy digital environment.Power-On Reset

Seite 19

Bridge ApplicationThe MAX1032/MAX1033 convert 1kHz signals moreaccurately than a similar sigma-delta converter thatmight be considered in bridge appli

Seite 20

Differential Nonlinearity (DNL)DNL is the difference between an actual step width andthe ideal value of 1 LSB. A DNL error specification ofgreater tha

Seite 21

Unipolar Offset Error-FSR to 0VWhen a zero-scale analog input voltage is applied tothe converter inputs, the digital output is all ones(0x3FFF). Ideal

Seite 22

Effective Number of Bits (ENOB)ENOB indicates the global accuracy of an ADC at aspecific input frequency and sampling rate. With aninput range equal t

Seite 23

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs_______________________________________________________________________________

Seite 24

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs30 ____________________________________________________________________________

Seite 25 - Applications Information

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCsMaxim cannot assume responsibility for use of any circuitry other than circuitr

Seite 26

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs4 _____________________________________________________________________________

Seite 27

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs_______________________________________________________________________________

Seite 28

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs6 _____________________________________________________________________________

Seite 29

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs_______________________________________________________________________________

Seite 30

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs8 _____________________________________________________________________________

Seite 31 - Package Information

MAX1032/MAX10338-/4-Channel, ±12V Multirange Inputs, Serial 14-Bit ADCs_______________________________________________________________________________

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