Production Data

WM2130

WOLFSON MICROELECTRONICS LTD

PD Rev 1.2 April 2001

5

Test Conditions:

unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Analogue Reference Inputs / Outputs in Top/Bottom Mode (MODE=AVDD)

Bottom reference voltage

applied to REFBS

0

AVDD – 1V

Top reference voltage applied to

REFTS

1

AVDD

V

Differential reference input

(REFTS – REFBS)

12

V

Switched input capacitance on

REFBS

0.6

pF

Switched input capacitance on

REFTS

0.6

pF

REFBF output voltage

(AVDD -

V

REFTF output voltage

(AVDD +

V

Analogue Reference Inputs / Outputs in Centre-Span Mode (MODE=AVDD/2)

Reference voltage derived or

applied to VREF

12

V

REFBF output voltage

(AVDD -

VREF)/2

V

REFTF output voltage

(AVDD +

VREF)/2

V

Analogue Reference Inputs / Outputs in Full External Reference Mode (MODE=AGND) (Note 1)

Differential reference voltage

applied (REFTF – REFBF)

12

V

AVDD = 3.0V

1.3

1.5

1.7

V

Reference input common mode

(REFTF + REFBF) / 2

AVDD = 5.0V

2.0

2.5

3.0

V

Reference input resistance

680

Ω

VREF Input / Output specifications

Internal 1V reference to VREF

REFSENSE = VREF

0.95

1.0

1.05

V

Internal 2V reference to VREF

REFSENSE = AGND

1.9

2.0

2.1

V

External reference applied to

VREF pin in centre-span mode

REFSENSE = AVDD,

MODE = AVDD / 2

12

V

Input impedance in centre-span

mode

REFSENSE = AVDD,

MODE = AVDD / 2

18

k

Ω

Power Supplies

AVDD = DVDD = 3V,

MODE = AGND

29

40

Operating supply current

AVDD = DVDD = 5V

50

mA

Standby Power

AVDD = DVDD = 3V,

MODE = AGND

35

mW

Digital Logic Levels (CMOS Levels)

Input LOW level

(Note 2)

0.2 x VDD

V

Input HIGH level

(Note 2)

0.8 x VDD

V

Notes

1.

In full external reference mode the REFTF and REFTS pins should be shorted together, and the REFBF and REFBS

pins should be shorted together. Please refer to device operation examples in the device description section of the

datasheet.

2.

Digital input and output levels refer to the supply used for the input/output buffer on the relevant pin. MODE refers to

the AVDD supply, all other digital input/output refers to the DVDD supply.