Lucent Technologies Inc.

5

Data Sheet

February 1998

T7503 Dual PCM Codec with Filters

Table 3. Power Dissipation

Power measurements are made at MCLK = 4.096 MHz, outputs unloaded.

Transmission Characteristics

Table 4. Analog Interface

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Powerdown Current

MCLK present and FS

≤ 0.4 V

—

0.1

1

mA

Powerup Current

MCLK, FS pulse present

—

18

25

mA

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

VFxI = 2.4 V

1.0

—

—

M

Ω

VFxI = 2.4 V

–2.4

±0.01

2.4

µA

—

—

—

10

pF

Input Offset Voltage of Uncommitted

—

—

–5

—

5

mV

Input Common-mode Voltage Range,

—

—

1.2

—

V

Input Common-mode Rejection Ratio,

—

—

—

60

—

dB

Gain Bandwidth Product (10 kHz) of Un-

committed Op Amp

—

—

—

3000

—

kHz

—

—

—

–30

—

dBrnC

—

—

0.5

—

V

—

90

—

—

dB

Differential Output dc Offset Voltage

—

—

–80

±10

80

mV

—

—

—

50

pF

—

10

—

—

k

Ω

VCM Output Voltage Referenced to GND

—

—

2.25

2.35

2.5

V

VCM Output Load Capacitance

—

—

0

—

50

pF

—

10

—

—

k

Ω

—

300

—

—

Ω

—

—

—

100

pF

0 dBm0, 1020 Hz PCM

—

0.3

3

Ω

Alternating

± zero µ-law

2.25

2.35

2.5

V

down

—

–30

±0.02

30

µA

RL = 300

Ω

3.2

—

—

Vp-p