AV2636

Product Datasheet

ELECTRICAL CHARACTERISTICS

The measurement bandwidth is from 20Hz to 20kHz.)

PARAMETERS

SYMBOL

MIN

TYP

MAX

UNITS

DC Electrical Characteristics

Supply current (VDD = 3.3V)

10

mA

Supply current (VDD = 2.5V)

7

mA

Digital I/O Levels (TTL Level)

Digital input high level

2.0

V

Digital input low level

0.8

V

VDD–0.2

V

GND+0.2

V

Analog Characteristics

Reference voltage

VCM

VDD/2

V

Full scale analog output level

AOUT

VDD/3.3

Vrms

Minimum resistive load

10

kΩ

Maximum capacitive load

100

pF

Output DC level

VDD/2

V

SNR

102

dB

-90

dB

VDD = 3.3V

98

dB

SNR

100

dB

-90

dB

VDD = 2.5V

96

dB

Channel separation (1kHz)

-95

dB

Interchannel gain mismatch

0.1

dB

Program gain range

-∞

+6

dB

Notes:

1. SNR is measured as the ratio of output level with 1kHz full scale signal, to output level with all zero

signal into the digital input. The measurement is over 20Hz to 20kHz bandwidth with a ‘A-weight’ filter.

2. THD is measured at the output with 1kHz full scale signal into the digital input. The measurement is

over 20Hz to 20kHz bandwidth.

3. Dynamic Range is the ratio of maximum output over minimum output. It is normally measured by

THD+N at the output with an input signal that is 60dB below full scale. The 60dB is then added back

to the THD+N value for the final result.

4. Channel separation is also known as channel cross talk. It is measured by sending a 1kHz full scale

signal into one channel and measuring the output value at the other channel.

5. All measurements are done with a 20kHz low pass filter. Fail to use the filter will result in reduced

performance reading.

6. The VCM pin should be decoupled with a 10uF capacitor in parallel with a 0.1uF capacitor. Smaller

value may result in reduced performance.

AVS Technology, Inc.

4-16

August 18, 2004

www.avstech.com