WM5621LED datasheet(5/14 Pages) WOLFSON

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Wolfson Microelectronics

WM5621L

Electrical Characteristics (continued)

Typical Performance Characteristics

Typical DNL, INL and TUE at VDD = 5 V

-0.2

-0.15

-0.1

-0.05

0.05

0.1

0.15

0.2

128

160

192

224

256

Co de

Vdd = 5.0V, Vre f = 2.5V , Range = x1 @

25' C

I ntegral Non Li neari ty

-0.2

-0.15

-0.1

-0.05

0.05

0.1

0.15

0.2

128

160

192

224

256

Code

Vdd = 5 .0V, Vre f = 2. 5V, Ra ng e = x1 @ 25 'C

Total Unad justed Er ror

-0.2

-0.15

-0.1

-0.05

0.05

0.1

0.15

0.2

128

160

192

224

256

Cod e

Vdd = 5.0 V, Vref = 2.5 V, Rang e = x 1 @ 25 'C

Differenti al Non Li neari ty

-0.2

-0.15

-0.1

-0.05

0.05

0.1

0.15

0.2

128

160

192

224

256

Code

Vdd = 5.0V, Vref = 2.0V, Range = x2 @ 25 'C

VDD = 5.0, VREF = 2.5V, Range = x1 at 25

Differential Nonlinearity

Input Code

Total Unadjusted Error

VDD = 5.0, VREF = 2.5V, Range = x1 at 25

Input Code

Integral Nonlinearity

VDD = 5.0, VREF = 2.5V, Range = x1 at 25

Input Code

VDD = 5.0, VREF = 2.0V, Range = x2 at 25

Differential Nonlinearity

Input Code

12. Full Scale Error Rejection Ratio (FSE-RR) is

measured by varying the VDD voltage, from 4.75 to

5.25 V d.c., and measuring the proportion of this

signal imposed on the full-scale output voltage.

13. Linearity is only specified for DAC codes 1 through

255.

14. The ACT bit is latched on falling edge of EN.

15. Reference feedthrough is measured at any DAC out-

put with an input code = 00 hex with a Vref input = 1Vdc

+ 1 Vpp at 10kHz.

16. Channel-to-channel isolation is measured by setting

the input code of one DAC to FF hex and the code of

all other DACs to 00 hex with Vref input = 1Vdc + 1

Vpp at 10kHz.

17. Reference bandwidth is the -3dB bandwidth with an

ideal input at Vref = 1.25 Vdc + 2 Vpp and with a dig-

ital input code of full-scale (range set to x1 and Vdd =

5V)

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