Rainbow-electronics MAX513 Manual do Utilizador descarregar pdf

_______________General Description

The MAX512/MAX513 contain three 8-bit, voltage-output

digital-to-analog converters (DAC A, DAC B, and DAC C).

Output buffer amplifiers for DACs A and B provide voltage

outputs while reducing external component count. The

output buffer for DAC A can source or sink 5mA to within

0.5V of V

or V

. The buffer for DAC B can source or

sink 0.5mA to within 0.5V of V

or V

. DAC C is

unbuffered, providing a third voltage output with increased

accuracy. The MAX512 operates with a single

+5V ±10% supply, and the MAX513 operates with a

+2.7V to +3.6V supply. Both devices can also operate

with split supplies.

The 3-wire serial interface has a maximum operating fre-

quency of 5MHz and is compatible with SPI™, QSPI™,

and Microwire™. The serial input shift register is 16 bits

long and consists of 8 bits of DAC input data and 8 bits

for DAC selection and shutdown. DAC registers can be

loaded independently or in parallel at the positive edge

–

—

–

. A latched logic output is also available for auxil-

iary control.

Ultra-low power consumption and small packages

(14-pin DIP/SO) make the MAX512/MAX513 ideal for

portable and battery-powered applications. Supply cur-

rent is only 1mA, dropping to less than 1µA in shutdown.

Any of the three DACs can be independently shut down.

In shutdown mode, the DAC's R-2R ladder network is

disconnected from the reference input, minimizing sys-

tem power consumption.

________________________Applications

Digital Gain and Offset Adjustment

Programmable Attenuators

Programmable Current Sources

Programmable Voltage Sources

RF Digitally Adjustable Bias Circuits

VCO Tuning

____________________________Features

♦ Operate from a Single +5V (MAX512) or

+3V (MAX513) Supply, or from Bipolar Supplies

♦ Low Power Consumption

1mA Operating Current

<1µA Shutdown Current

♦ Unipolar or Bipolar Outputs

♦ 5MHz, 3-Wire Serial Interface

♦ SPI, QSPI, and Microwire Compatible

♦ Two Buffered, Bipolar-Output DACs (DACs A/B)

♦ Independently Programmable Shutdown Mode

♦ Space-Saving 14-Pin SO/DIP Packages

♦ Pin and Software Reset

______________Ordering Information

Ordering Information continued at end of data sheet.

* Contact factory for dice specifications.

MAX512/MAX513

Low-Cost, Triple, 8-Bit Voltage-Output DACs

with Serial Interface

________________________________________________________________

Maxim Integrated Products

DAC

LATCH

DAC A

DAC

LATCH

DAC B

DAC

LATCH

LATCH

DAC C

SCLK

OUTA

OUTB

OUTC

LOUT

DIN CS REFAB REFC

RESET

GND

16-BIT SHIFT REGISTER

CONTROL (8) DATA (8)

MAX512

MAX513

567

1112

________________Functional Diagram

LOUT

I.C.

REFAB

REFC

RESET

SCLK

DIN

DIP/SO

TOP VIEW

MAX512

MAX513

OUTC

OUTB

OUTA

GND

__________________Pin Configuration

19-0252; Rev 2; 5/96

PART TEMP. RANGE PIN-PACKAGE

MAX512CPD

0°C to +70°C 14 Plastic DIP

MAX512CSD 0°C to +70°C 14 SO

MAX512C/D 0°C to +70°C Dice*

Microwire is a trademark of National Semiconductor Corp. SPI and QSPI are trademarks of Motorola Inc.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

1 2 3 4 5 6 ... 15 16

MAX512/MAX513 1

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Página 1 - MAX512/MAX513

_______________General DescriptionThe MAX512/MAX513 contain three 8-bit, voltage-outputdigital-to-analog converters (DAC A, DAC B, and DAC C).Output b

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SDINSCLKCSQ2 Q1 SC SB SA LC LB LA D7 D6 D5 D4 D3 D2 D1 D0OPTIONALINSTRUCTIONEXECUTED(CONTROL BYTE) (DATA BYTE)Figure 2. MAX512/MAX513 3-Wire Serial-I

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface________________________________________________________________________

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface12 _____________________________________________________________________

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Bipolar OutputUsing Figure 4’s circuit, the MAX512/MAX13 can be con-figured for bipolar outputs. Table 4 lists the bipolar codesand corresponding outp

Página 6

MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface14 _____________________________________________________________________

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface________________________________________________________________________

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Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses arei

Página 9

LSBMAX512/MAX513Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface2 ___________________________________________________________________

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface________________________________________________________________________

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage Output DACs with Serial Interface4 ______________________________________________________________________

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage Output DACs with Serial Interface________________________________________________________________________

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CLOCK FEEDTHROUGH (OUTA)B 1µs/divA A: SCLK, 333kHz, 0V TO 2.9V, 2V/divB: OUTA, 2mV/divVSS = 0V, CS = HIGHCLOCK FEEDTHROUGH (OUTC)B 1µs/divA

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage Output DACs with Serial Interface________________________________________________________________________

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface8 ______________________________________________________________________

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MAX512/MAX513Low-Cost, Triple, 8-Bit Voltage-Output DACs with Serial Interface________________________________________________________________________

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Rainbow-electronics MAX513 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Satélite Rainbow-electronics MAX513. Rainbow Electronics MAX513 User Manual Manual do Utilizador

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