WM2636 datasheet(3/10 Pages) WOLFSON

Part #	WM2636

Description	12-bit Serial Input Voltage Output DAC with Internal Reference

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Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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3 / 10 page

WM2636

Production Data

WOLFSON MICROELECTRONICS LTD

PD Rev 1.0 July 1999

3

ELECTRICAL CHARACTERISTICS

Test Conditions:

RL = 10k

Ω, CL = 100pF. VDD = 5V

± 10%, V

REF = 2.048V and VDD = 3V

± 10%, V

REF = 1.024V over recommended operating

free-air temperature range (unless noted otherwise).

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Static DAC Specifications

Resolution

12

bits

Integral non-linearity

INL

See Note 1

±2.0

±4.0

LSB

Differential non-linearity

DNL

See Note 2

±0.5

±1.0

LSB

Zero code error

ZCE

See Note 3

±20

mV

Gain error

GE

See Note 4

±0.6

% FSR

D.c. power supply rejection ratio

DC PSRR

See Note 5

0.5

mV/V

Zero code error temperature coefficient

See Note 6

10

ppm/

°C

Gain error temperature coefficient

See Note 6

10

ppm/

°C

DAC Output Specifications

Output voltage range

0

VDD - 0.1

V

Output load regulation

2k

Ω to 10kΩ load

See Note 7

±0.1

±0.25

%

Power Supplies

No load, VIH = VDD, VIL = 0V

VDD = 5V,

VREF = 2.048V Slow

1.6

1.9

mA

VDD = 5V,

VREF = 2.048V Fast

2.9

3.4

mA

VDD = 3V,

VREF = 1.024V Slow

1.4

mA

Active supply current

IDD

VDD = 3V,

VREF = 1.024V Fast

See Note 8

2.7

mA

Power down supply current

No load,

all digital inputs 0V or VDD

See Note 9

0.01

10

µA

Dynamic DAC Specifications

Slew rate

DAC code 128 to 4095,

10%-90% See Note 10

Slow

Fast

2

14

V/

µs

V/

µs

Settling time

DAC code 128 to 4095

See Note 11

Slow

Fast

3.5

1.0

µs

Glitch energy

Code 2047 to 2048

10

nV-s

Signal to noise ratio

SNR

fs = 400ksps, fOUT = 1kHz,

BW = 20kHz

See Note 12

71

75

dB

Signal to noise and distortion ratio

SNRD

fs = 400ksps, fOUT = 1kHz,

BW = 20kHz See Note 12

59

66

dB

Total harmonic distortion

THD

fs = 400ksps, fOUT = 1kHz,

BW = 20kHz See Note 12

-67

-59

dB

Spurious free dynamic range

SPFDR

fs = 400ksps, fOUT = 1kHz,

BW = 20kHz See Note 12

59

69

dB

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