Datasheet

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SBFS026B − JUNE 2004 − REVISED SEPTEMBER 2007
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3
ELECTRICAL CHARACTERISTICS (continued)
All specifications at T
A
= +25°C, VDD33 = +3.3V, V
IO
= +3.3V, REGEN = High, and VDD18 floating, unless otherwise noted.
SRC4184
PARAMETER UNITSMAXTYPMINCONDITIONS
DIGITAL ATTENUATION Software Mode Only
Minimum 0 dB
Maximum −127.5 dB
Step Size 0.5 dB
Mute Attenuation 24-Bit Word Length −128 dB
DIGITAL INTERPOLATION FILTER CHARACTERISTICS
Passband 0.4535 × f
sIN
Hz
Passband Ripple ±0.007 dB
Transition Band 0.4535 × f
sIN
0.5465 × f
sIN
Hz
Stop Band 0.5465 × f
sIN
Hz
Stop Band Attenuation −128 dB
Group Delay (64 sample buffer) Decimation Filter Enabled 102.53125/f
sIN
seconds
Group Delay (64 sample buffer) Direct Downsampling Enabled 102/f
sIN
seconds
Group Delay (32 sample buffer) Decimation Filter Enabled 70.53125/f
sIN
seconds
Group Delay (32 sample buffer) Direct Downsampling Enabled 70/f
sIN
seconds
Group Delay (16 sample buffer) Decimation Filter Enabled 54.53125/f
sIN
seconds
Group Delay (16 sample buffer) Direct Downsampling Enabled 54/f
sIN
seconds
Group Delay (8 sample buffer) Decimation Filter Enabled 46.53125/f
sIN
seconds
Group Delay (8 sample buffer) Direct Downsampling Enabled 46/f
sIN
seconds
DIGITAL DECIMATION FILTER CHARACTERISTICS
Passband 0.4535 × f
sOUT
Hz
Passband Ripple ±0.008 dB
Transition Band 0.4535 × f
sOUT
0.5465 × f
sOUT
Hz
Stop Band 0.5465 × f
sOUT
Hz
Stop Band Attenuation −128 dB
Group Delay
Decimation Filter Decimation Filter Enabled 36.46875/f
sOUT
seconds
Direct Downsampling Direct Downsampling Enabled 0 seconds
DIGITAL DE-EMPHASIS
De-Emphasis Error for f
s
= 32kHz, 44.1kHz, or
48kHz
De-Emphasis Enabled 0.001 dB
DIGITAL I/O CHARACTERISTICS
High-Level Input Voltage V
IH
0.7 × V
IO
V
IO
V
Low-Level Input Voltage V
IL
0 0.3 × V
IO
V
High-Level Input Current I
IH
0.5 10 µA
Low-Level Input Current I
IL
0.5 10 µA
High-Level Output Voltage V
OH
I
O
= −4mA 0.8 × V
IO
V
IO
V
Low-Level Output Voltage V
OL
I
O
= +4mA 0 0.2 × V
IO
V
Input Capacitance C
IN
3 pF
SWITCHING CHARACTERISTICS
Reference Clock Timing
RCKI Frequency
(2)(3)
128 × f
sMIN
50 MHz
RCKI Period t
RCKIP
20 1/(128 × f
sMIN
) ns
RCKI Pulsewidth High t
RCKIH
0.4 × t
RCKIP
ns
RCKI Pulsewidth Low t
RCKIL
0.4 × t
RCKIP
ns
Reset Timing
RST Pulsewidth Low t
RSTL
500 ns
Delay Following RST Rising Edge Software Mode Only 500 µs
Input Serial Port Timing
LRCKI to BCKI Setup Time t
LRIS
10 ns
BCKI Pulsewidth High t
SIH
10 ns
BCKI Pulsewidth Low t
SIL
10 ns
SDIN Data Setup Time t
LDIS
10 ns
SDIN Data Hold Time t
LDIH
10 ns
(1)
Dynamic performance is measured with an Audio Precision System Two Cascade or Cascade Plus test system.
(2)
f
sMIN
= min (f
sIN
, f
sOUT
).
(3)
f
sMAX
= max (f
sIN
, f
sOUT
).
(4)
Power-supply current for power-down modes is measured without loading.
(5)
Dynamic current is measured with active loading and the excercized output pins equal to ±2mA.