WM8141

Production Data

WOLFSON MICROELECTRONICS LTD

PD Rev 3.0 October 2000

4

RECOMMENDED OPERATING CONDITIONS

CONDITION

SYMBOL

MIN

TYP

MAX

UNITS

Operating temperature range

070

°C

Digital supply voltages (5V operation)

DVDD1, DVDD2

4.75

5

5.25

V

Digital supply voltages (3.3V operation)

DVDD1, DVDD2

2.97

3.3

3.63

V

Analogue supply voltage (5V operation)

AVDD

4.75

5

5.25

V

Analogue supply voltage (3.3V operation)

AVDD

2.97

3.3

3.63

V

POSSIBLE POWER SUPPLY COMBINATIONS

COMBINATION

AVDD, DVDD1 (VOLTS)

DVDD2 (VOLTS)

155

25

3.3

33.3

3.3

ELECTRICAL CHARACTERISTICS

ANALOGUE CHARACTERISTICS (5V OPERATION)

Test Conditions

°C, MCLK = 12MHz unless otherwise stated.

PARAMETER

SYMBOL

TEST

CONDITIONS

MIN

TYP

MAX

UNIT

Overall System Specification Including CDS, PGA, OFFSET and ADC Functions. No Missing Codes Guaranteed.

Full-scale input voltage range

(see Note 1)

Max Gain

Min Gain

0.4

4.08

Vp-p

Vp-p

Input signal limits (see Note 2)

0

AVDD

V

Full-scale transition error

Gain = 0dB;

PGA[7:0] = 4B(hex)

20

mV

Zero-scale transition error

Gain = 0dB;

PGA[7:0] = 4B(hex)

20

mV

Differential non-linearity

DNL

0.5

1

LSB

Integral non-linearity

INL

2

LSB

Channel to channel gain matching

1%

References

Upper reference voltage

VRT

2.70

2.85

3.00

V

Lower reference voltage

VRB

1.25

1.35

1.45

V

Input return bias voltage

VRX

0.60

0.65

0.70

V

Diff. reference voltage (VRT-VRB)

1.4

1.5

1.6

V

Output resistance VRT, VRB, VRX

1

Ω