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IDT821024PP

QUAD NON-PROGRAMMABLE PCM CODEC

Integrated Device Technology 

IDT821024 QUAD NON-PROGRAMMABLE PCM CODEC

INDUSTRIAL TEMPERATURE RANGE

TRANSMISSION CHARACTERISTICS

0dBm0 is defined as 0.6832Vrms for A-law and 0.6778 Vrms for µ-law, both for 600 Ω load. Unless otherwise noted, the analog input is a 0

dBm0, 1020 Hz sine wave; the input amplifier is set for unity gain. The digital input is a PCM bit stream equivalent to that obtained by passing a 0

dBm0, 1020 Hz sine wave through an ideal encoder. The output level is sin(x)/x-corrected. Typical value are tested at VDD = 5V and TA = 25°C.

Absolute Gain

Parameter

GXA

GRA

Description

Transmit Gain, Absolute

0°C to 85°C

-40°C

Receive Gain, Absolute

0°C to 85°C

-40°C

Min Typ Max Units

Test Conditions

Signal input of 0 dBm0, µ-law or A-law

-0.25

0.25 dB

-0.35

0.35 dB

Measured relative to 0 dBm0, µ-law or A-law, PCM input of 0

-0.25

0.25 dB

dBm0 1020 Hz , RL = 10 kΩ

-0.35

0.35 dB

Gain Tracking

Parameter

GTX

GTR

Description

Transmit Gain Tracking

+3 dBm0 to –40 dBm0

-40 dBm0 to -50 dBm0

-50 dBm0 to -55 dBm0

Receive Gain Tracking

+3 dBm0 to –40 dBm0

-40 dBm0 to -50 dBm0

-50 dBm0 to -55 dBm0

Min

Typ Max Units

Test Conditions

Tested by Sinusoidal Method, µ-law/A-law

-0.10

0.10

dB

-0.25

0.50

dB

-0.50

0.50

dB

Tested by Sinusoidal Method, µ-law/A-law

-0.10

0.10

dB

-0.25

0.50

dB

-0.50

0.50

dB

Frequency Response

Parameter

GXR

GRR

Description

Transmit Gain, Relative to GXA

f = 50 Hz

f = 60 Hz

f = 300 Hz to 3400 Hz

f = 3600 Hz

f = 4600 Hz and above

Receive Gain, Relative to GRA

f below 300 Hz

f = 300 Hz to 3400 Hz

f = 3600 Hz

f = 4600 Hz and above

Min Typ Max Units

-40

dB

-40

dB

-0.15

0.15

dB

-0.1

dB

-35

dB

0

dB

-0.15

0.15

dB

-0.2

dB

-35

dB

Test Conditions

Group Delay

Parameter

D XA

D XR

DRA

DRR

Description

Transmit Delay, Absolute *

Transmit Delay, Relative to 1800 Hz

f = 500 Hz – 600 Hz

f = 600 Hz –1000 Hz

f = 1000 Hz – 2600 Hz

f = 2600 Hz – 2800 Hz

Receive Delay, Absolute *

Receive Delay, Relative to 1800 Hz

f = 500 Hz – 600 Hz

f = 600 Hz –1000 Hz

f = 1000 Hz – 2600 Hz

f = 2600 Hz – 2800 Hz

Note*: Minimum value in transmit and receive path.

Min

Typ Max Units

340

µs

280

µs

150

µs

80

280

µs

µs

260

µs

50

µs

80

µs

120

150

µs

µs

Test Conditions

8

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