WM5615CD datasheet(3/12 Pages) WOLFSON

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WM5615

Wolfson Microelectronics

Resolution

bits

Integral nonlinearity

INL

(see note 1)

±1

LSB

Differential nonlinearity

DNL

(see note 2)

+0.1

±0.5

LSB

Zero scale error (offset error) EZS

(see note 3)

±3

LSB

Zero scale error (offset error)

(see note 4)

ppm/oC

temperature coefficient

Gain error

(see note 5)

±3

LSB

Gain error temperature

(see note 6)

ppm/oC

coefficient

Power-supply rejection ratio

PSRR

Offset (see notes 7 and 8)

0.1

LSB/V

Gain

0.1

Analogue full scale output

RL = 100k

Ω

2Vref(1023/1024)

Electrical Characteristics (over recommended operating free-air temperature range)

VDD = 5.0V ±5%, Vref = 2.048V unless otherwise stated.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Static DAC Specifications

Notes:

1. The relative accuracy or integral nonlinearity (INL),

sometimes referred to as linearity error, is the

maximum deviation ot the output from the line

between zero and full scale, excluding the effect of

zero code and full scale errors (see text).

2. The differential nonlinearity (DNL), sometimes

referred to as differential error, is the difference

between the measured and ideal LSB amplitude

change of any two adjacent codes. Monotonic means

the output voltage changes in the same direction (or

remains constant) as a change in the digital input

code.

3. Zero-scale error is the deviation from zero voltage

output when the digital input is zero (see text)

4. Zero-scale error temperature coefficient is given by

EZS TC = [EZS (Tmax) - EZS (Tmin)] /Vref x 106/ (Tmax-

Tmin)

Voltage Output (OUT)

5. Gain error is the deviation from the ideal output (Vref

- 1LSB) with an output load of 10k

Ω, excluding the

effects of zero error.

6. Gain temperature coefficient is given by EG TC =

[EG (Tmax) - EG (Tmin)] /Vref x 106/(Tmax-Tmin).

7. Zero-scale offset error rejection ratio (EZS-RR) is

measured by varying the VDD from 4.5V to 5.5V DC

and measuring the proportion of this signal imposed

on the zero-code output voltage.

8. Gain error rejection ratio (EG-RR) is measured by

varying the VDD from 4.5 to 5.5 V DC and measuring

the proportion of this signal imposed on the full-scale

output voltage after subtracting the zero scale

change.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Voltage output range

RL = 10k

Ω

0VDD-0.4

Output load regulation accuracy

VO(OUT) = 2V RL=2k

Ω

0.5

LSB

Output short circuit current

IOSC

OUT to VDD or AGND

Output voltage, low level

VOL(low)

IO (OUT) <= 5mA

0.25

Output voltage, high level

VOH(high)

IO (OUT) <= -5mA

4.75

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