8

Specifications

Absolute Maximum Ratings

Exceeding the maximum rating can result in device damage. Operation of the device outside the operating limits is

not implied.

Supply voltage

-0.3 to 7.0V

Input voltage at any pin (ref V

-0.3 to (V

DD

+ 0.3V)

Source/sink current (supply pins)

± 30mA

(other pins)

± 20mA

Total device dissipation @ 25

°C

800mW Max.

Derating

10mW/

°C

Operating temperature range:

FX629J

-40

°C to +85°C

Storage temperature range:

FX629J

-55

°C to +125°C

Operating Limits

All characteristics are measured using the following parameters unless otherwise specified:

V

T

Xtal/Clock f

Audio Level 0dB ref (0dBm0) = 489 mV rms.

Audio Test Frequency = 800 Hz. Sample Clock Rate = 32kb/s. Compand Algorithm = 3-bit.

Characteristics

See Note

Min.

Typ.

Max.

Unit

Static Values

Supply Voltage

1

4.5

5.0

5.5

V

Supply Current (Enabled)

–

5.5

–

mA

Supply Current (Powersave)

–

0.4

–

mA

Inputs Logic '1'

8

3.5

–

–

V

Inputs Logic '0'

8

–

–

1.5

V

Outputs Logic '1'

8

4.0

–

–

V

Outputs Logic '0'

8

–

–

1.0

V

Digital Input Impedance

(Logic I/O pins)

1.0

10.0

–

M

Ω

Digital Input Impedance

(Logic input pins, pullup resistor)

2

300

–

–

k

Ω

Digital Output Impedance

–

–

4

k

Ω

Analogue Input Impedance

4

–

1.0

–

k

Ω

Analogue Output Impedance

7

–

–

800

Ω

Three State Output Leakage

Current (output disabled)

-4.0

–

+4.0

µA

Insertion Loss

3

-2.0

–

+2.0

dB

Dynamic Values

1,9

Encoder:

Analogue Signal Input Levels

5,9

-35.0

–

+12.0

dBm0

Principle Integrator Frequency

127

159

212

Hz

Encoder Passband

3400

Hz

Compand Time Constant

4.0

5.0

6.0

ms

Decoder:

Analogue Signal Output Levels

5,9

-35.0

–

+12.0

dBm0

Decoder Passband

300

–

3400

Hz

Encoder Decoder (Full codec):

Compression Ratio (Cd = 0.3 to Cd = 0.0)

–

16:1

–

Passband

300

–

3400

Hz

Stopband

4.2

–

–

kHz

Stopband Attenuation (4200Hz to 6000Hz)

25.0

–

–

dB

(> 6kHz)

–

60.0

–

dB

Passband Gain

–

0

–

dB

Passband Ripple (300Hz –1400Hz)

-1.0

–

+1.0

dB

(1400Hz – 2600Hz)

-1.0

–

+3.0

dB

(2600Hz – 3400Hz)

-2.0

–

+3.0

dB

Output Noise (Input short circuit)

9

–

-55.0

–

dBm0

Perfect Idle Channel Noise (Encoder forced) 9

–

-57.0

–

dBm0

Group Delay Distortion

6

(1000Hz to 2600Hz)

–

–

450

µs

(600Hz to 2800Hz)

–

–

750

µs

(500Hz to 3000Hz)

–

–

1.5

ms

Xtal/Clock Frequency

–

1024

–

kHz