12

Specification

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

Sink/source current

(supply pins)

+/- 30mA

(other pins)

+/- 20mA

Total device dissipation @ T

800mW Max.

Derating

10mW/

°C

Operating temperature range:

FX802J

-40

°C to +85°C (cerdip)

FX802LG/LS

-40

°C to +85°C (plastic)

Storage temperature range:

FX802J

-55

°C to +125°C (cerdip)

FX802LG/LS

-40

°C to +85°C (plastic)

Operating Limits

All device characteristics are measured under the following conditions unless otherwise specified:

V

Xtal/Clock f

Standard Test Signal f

Audio Level 0dB ref: = 308mVrms .

Characteristics

See Note

Min.

Typ.

Max.

Unit

Static Values

Supply Voltage (V

4.5

5.0

5.5

V

Supply Current (enabled)

1

–

7.0

–

mA

Supply Current (all powersaved)

1

–

1.0

–

mA

Digital Interface

Input Logic “1”

2, 4

3.5

–

–

V

Input Logic “0”

2, 4

–

–

1.5

V

Output Logic “1”

at IOH = -120

µA

8, 4

4.6

–

–

V

at IOH = -50

µA

3, 4

4.6

–

–

V

at IOH = 20

µA

4, 10

4.6

–

–

V

Output Logic “0”

at IOL = 20

µA

4, 10

–

–

0.4

V

at IOL = 100

µA

3, 4

–

–

0.4

V

at IOL = 360

µA

4, 8, 9

–

–

0.4

V

Digital Input Current

(V

2

–

–

1.0

µA

Leakage Current into IRQ “OFF” Output

5

–

–

4.0

µA

Digital Input Capacitance

2

–

–

7.5

pF

Analogue Impedance

Input Impedance

13

–

500

–

k

Ω

Output Impedance

–

1.5

–

k

Ω

Dynamic Values

Encoder

Analogue Signal Input Levels

6

-24.0

–

4.0

dB

Passband

11, 12

–

3400

–

Hz

Decoder

Analogue Signal Output Levels

6

-24.0

–

4.0

dB

Passband

11, 12

300

–

3400

Hz

Encoder/Decoder (Full Codec)

Passband

11, 12

300

3400

Hz

Passband Gain

12

–

0

–

dB

Passband Ripple

12

-3.0

–

3.0

dB

Stopband

6.0

–

10

kHz

Stopband Attenuation

–

50.0

–

dB

SINAD Level (-6dB)

–

23.0

–

dB

Output Noise (Input short circuit)

–

-50

–

dBp

Idle Channel Noise (Forced )

–

-55

–

dBp

Xtal/clock Frequency

7

–

4.0

–

MHz

Notes

1.

Does not include current drawn by any attached DRAM.

2.

Serial Clock, Command Data, CS, A1/DEI and A2/DCK inputs.

3.

CAS, WE and A0 to A9 outputs.

4.

All measurements are made at 5.0 volts V

5.

When the IRQ Output is at V

6.

The optimum range of levels for a good Signal-to-Noise Ratio.

7.

Audio frequency responses will vary with respect to Xtal/clock frequency.

8.

Reply Data output.

9.

IRQ output.

10. RAS Outputs.

11. Passband is reduced to (typically) 2700Hz when a sample rate of 25kb/s or 50kb/s is employed.

12. Measured with a -20dB input level to avoid codec slope-overload.

13. For optimum noise performance this input should be driven from a source impedance of less than 100

Ω.