Data Sheet
February 1998
T7503 Dual PCM Codec with Filters
Electrical Characteristics
(continued)
dc Characteristics
(continued)
Table 3. Power Dissipation
Power measurements are made at MCLK = 4.096 MHz, outputs unloaded.
Parameter
Powerdown Current
Powerup Current
Symbol
I
DDO
I
DDU
Test Conditions
MCLK present and FS
≤
0.4 V
MCLK, FS pulse present
Min
—
—
Typ
0.1
18
Max
1
25
Unit
mA
mA
Transmission Characteristics
Table 4. Analog Interface
Parameter
Input Resistance, FS
X
I
Input Leakage Current, VF
X
I
Input Capacitance, VF
X
IN, VF
X
IP
Input Offset Voltage of Uncommitted
Op Amp, VF
X
IN – VF
X
IP
Input Common-mode Voltage Range,
VF
X
IN, VF
X
IP
Input Common-mode Rejection Ratio,
VF
X
IN, VF
X
IP
Gain Bandwidth Product (10 kHz) of Un-
committed Op Amp
Equivalent Input Noise Between VF
X
IN
and VF
X
IP at GS
X
Output Voltage Range, GS
X
dc Open-loop Voltage Gain, GS
X
Differential Output dc Offset Voltage
Load Capacitance, GS
X
Load Resistance, GS
X
VCM Output Voltage Referenced to GND
VCM Output Load Capacitance
Load Resistance, V
CM
Load Resistance, VF
R
O
Load Capacitance, VF
R
O
Output Resistance, VF
R
O
Output Voltage, VF
R
O
Output Leakage Current, VF
R
O, Power-
down
Output Voltage Swing, VF
R
O
Symbol
R
VFXI
I
BVFXI
—
—
—
—
—
—
Test Conditions
VFxI = 2.4 V
VFxI = 2.4 V
—
—
—
—
—
—
Min
1.0
–2.4
–5
1.2
—
—
—
0.5
90
–80
—
10
2.25
0
10
300
—
—
2.25
–30
3.2
Typ
—
±0.01
—
—
—
60
3000
–30
—
—
±10
—
—
2.35
—
—
—
—
0.3
2.35
±0.02
—
Max
—
2.4
10
5
V
DD
– 1.75
—
—
—
V
DD
– 0.5
—
80
50
—
2.5
50
—
—
100
3
2.5
30
—
Unit
MΩ
µA
pF
mV
V
dB
kHz
dBrnC
V
dB
mV
pF
kΩ
V
pF
kΩ
Ω
pF
Ω
V
µA
Vp-p
—
—
A
VOL
—
—
—
CL
X1
—
RL
X1
—
—
—
—
—
RL
VCM
—
RL
VFRO
—
CL
VFRO
—
RO
VFRO
0 dBm0, 1020 Hz PCM
code applied to D
R
VO
R
Alternating
±
zero
µ-law
PCM code applied to D
R
IO
VFRO
—
V
SWR
RL = 300
Ω
Lucent Technologies Inc.
5
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