Wolfson Microelectronics

4

WM5621L

5

Electrical Characteristics

unless otherwise stated.

Notes:

3.

This is tested by design but is not production tested.

4.

This is measured with no load (open circuit output),

Vref = 1.25V, range = x2.

5.

Integral Nonlinearity (INL) is the maximum deviation of

the output from the line between zero and full scale (ex-

cluding the effects of zero code and full-scale

er-

rors).

6.

Differential Nonlinearity (DNL) is the difference be-

tween the measured and ideal 1 LSB amplitude

change of any two adjacent codes. A guarantee of

monotonicity means the output voltage changes in the

same direction (or remains constant) as a change in

the digital input code.

7.

Zero-scale error is the deviation from zero voltage

output when the digital input code is zero.

8.

Zero scale error temperature coefficient is given by:

9.

Full-Scale error is the deviation from the ideal full-scale

output (Vref - 1LSB) with an output load of 10k

Ω.

10. Full-Scale Temperature Coefficient is given by:

6

/

11. Zero-code Error Rejection Ratio (ZCE-RR) is

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

signal imposed on the zero-code output voltage.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Output slew rate rising DACA

0.8

V/

µS

Output slew rate falling DACA

0.5

V/

µS

Output slew rate DACB,C,D

1

V/

µS

Output settling time rising

To 1/2 LSB, VDD=3V

20

µS

DACA

Output settling time falling

To 1/2 LSB, VDD=3V

75

µS

DACA

Output settling time rising

To 1/2 LSB, VDD=3V

10

µS

DACB,C,D

Output settling time falling

To 1/2 LSB, VDD=3V

75

µS

DACB,C,D

Output settling time HWACT

To 1/2 LSB, VDD=3V

40

120*

µS

or ACT

↑ to output volts DACA

(note 14)

Output settling time HWACT

To 1/2 LSB, VDD=3V

25

75*

µS

or ACT

↑ to output volts

DACB,C,D (note 14)

Large signal Bandwidth

Measured at -3dB point

100

KHz

Digital crosstalk

CLK=1MHz sq. wave

-50

dB

measured at DACA-DACD

Reference feedthrough

A,B,C,D inputs (note 15)

-60

dB

Channel-to-channel isolation

A,B,C,D inputs (note 16)

-60

dB

Channel-to-channel isolation

A,B,C,D inputs

-40

dB

when in shutdown

Reference bandwidth DACA

note 17

20

kHz

Reference bandwidth

note 17

100

kHz

DACB,C,D