Cirrus Logic CS42L42 Manual page 14

Table 3-8. DAC High-Pass Filter (HPF) Characteristics
Test conditions (unless specified otherwise) Analog and digital gains are all set to 0 dB; T
Passband
Passband ripple (0.417x10 –3
Phase deviation @ 0.453x10 –3
Filter settling time 2
1.Response scales with Fs (internal sample rate, based on MCLK). Specifications are normalized to Fs
INT
2.Required time for the magnitude of the DC component present at the output of the HPF to reach 5% of the applied DC signal.
Table 3-9. HSINx to SDOUT with SRC-Enabled Datapath Characteristics
Test conditions (unless specified otherwise): LRCK = Fs
to 20 Hz; entire path characteristics including AFE + ADC + SRC + serial port.
ADC Passband
notch
filter
Passband ripple (0.417x10
enabled
Stopband rejection from 0.477 Fs
Square wave overshoot
Group delay, bark-weighted average
Group delay
SRC-disabled group delay
ADC Passband
notch
filter
Passband ripple (0.417x10
disabled
Stopband rejection from 0.480 Fs
Stopband rejection from 0.521 Fs
Stopband rejection from 0.640 Fs
Square wave overshoot
Group delay, bark-weighted average
Group delay
SRC disabled group delay
1. Fs is the external sample rate (LRCK/FSYNC frequency). Response scales with
EXT
2.Measurements with HPF disabled require either differential configuration or single-ended configuration with –30 dBFS input signal.
3.This value varies by up to 1 Fs. If SRC is disabled, Fs =
Table 3-10. SDIN to HPOUTx with SRC-Enabled Datapath Characteristics
Test conditions (unless specified otherwise): LRCK = Fs
0.417x10 –3 Fs
; entire path characteristics including serial port + SRC + DAC + HPOUT.
EXT
Passband
Passband ripple (0.417x10 –3 Fs
Response at 0.5 Fs
EXT
Stopband rejection from 0.480 Fs
Stopband rejection from 0.524 Fs
Stopband rejection from 0.545 Fs
Square wave overshoot
Group delay, bark-weighted average
Group delay
SRC disabled group delay 2
Fs
1. is the external sample rate (LRCK/FSYNC frequency). Response scales with
EXT
2.This value varies by up to 1 Fs. If SRC is disabled, Fs =
DS1083F2
Parameter 1
to 0.417 ; normalized to 0.417
Fs Fs
INT INT
Fs
INT
= Fs
INT
Parameters 1,2
–3
Fs to 0.390 Fs ; normalized to 20 Hz)
EXT EXT
to 3 Fs
EXT EXT
3
–3 Fs to 0.417 Fs ; normalized to 20 Hz)
EXT EXT
to 0.521 Fs
EXT EXT
to 0.640 Fs
EXT EXT
to 3 Fs
EXT EXT
3
Fs
OUT
= Fs
INT EXT
Parameters 1
to 0.417 Fs ; normalized to 0.417x10
EXT EXT
to 0.524 Fs
EXT EXT
to 0.545 Fs
EXT EXT
to 3 Fs
EXT EXT
Fs
OUT
= +25°C.
A
–0.05-dB corner
–3.0-dB corner
)
Fs
INT
= 48 kHz; MCLK = 12 MHz; HPF disabled; passband/stopband levels normalized
EXT
Minimum
–0.22-dB corner —
–3.0-dB corner —
–0.30
70
—
—
 44.1 kHz
Fs —
EXT
 48 kHz)
Fs —
EXT
—
–0.22-dB corner —
–3.0-dB corner —
–0.30
55
14
70
—
—
 44.1 kHz
Fs —
EXT
 48 kHz)
Fs —
EXT
—
Fs .
EXT
= Fs .
IN
= 48 kHz; MCLK = 12 MHz; HPF disabled; passband/stopband levels normalized to
Minimum
–0.2-dB corner —
–3.0-dB corner —
–3 Fs ) –0.16
EXT
—
55
39
60
—
—
 48 kHz
Fs —
EXT
 88.2 kHz)
Fs —
EXT
—
Fs
.
EXT
= Fs .
IN
3 Characteristics and Specifications
Minimum Typical
— 0.180x10 –3
— 19.5x10 –6
— —
— 2.45
— 24.5x10 3 /
Fs
INT
and are denormalized by multiplying by Fs
INT
Typical
0.390
0.410
—
—
—
—
17.4/Fs + (13.2 ± 1.5)/Fs
INT EXT
(12.4 ± 0.5)/Fs + (11.9 ± 1)/Fs
INT EXT
(13.9±1)/Fs
0.444
0.466
—
—
—
—
—
—
17.4/Fs + (13.2 ± 1.5)/Fs
INT EXT
(12.4 ± 0.5)/Fs + (11.9 ± 1)/Fs
INT EXT
(13.9±1)/Fs
Typical
0.463
0.466
—
—
—
—
—
—
—
(15.8 ± 1.5)/Fs + 10.3/Fs
EXT INT
(20.1 ± 1)/Fs + (11.6 ± 0.5)/Fs
EXT INT
(15±1)/Fs
CS42L42
Maximum Unit
—
Fs
INT
—
Fs
INT
0.01 dB
— °
— s
.
INT
Maximum Unit
— Fs
EXT
— Fs
EXT
0.15 dB
— dB
3.1 dB
38.5/Fs s
EXT
— s
— s
— s
— Fs
EXT
— Fs
EXT
0.15 dB
— dB
— dB
— dB
3.1 dB
38.5/Fs s
EXT
— s
— s
— s
Maximum Unit
— Fs
EXT
— Fs
EXT
0.02 dB
–54.9 dB
— dB
— dB
— dB
3.1 dB
34/Fs s
EXT
— s
— s
— s
14