Cirrus Logic CS42L42 Manual page 21

Table 3-16. DC Characteristics
Test conditions (unless specified otherwise):
to ground; VL = VCP = VA = 1.8 V, VP = 3.6 V; T
VCP_FILT (No load VP_CP Mode (ADPTPWR = 001)
connected to HPOUTx.)
VCP Mode (ADPTPWR = 010)
VCP/2 Mode (ADPTPWR = 011)
VCP/3 Mode (ADPTPWR = 100)
HS3/HS4 ground switch resistance (
HS_CLAMPx depletion FET ground switch resistance
Closed-loop external External switch allowable ON-resistance (R
switch configuration
External switch ON-resistance flatness over
common-mode voltage appearing at switch
External
Other DC filter FILT+ voltage
HP output current limiter on threshold. See
VD_FILT and VL power-on reset threshold (V
HPOUT pull-down
resistance 3,4
Headset-Detect Comparator 1 level
(Step size = 0.05 V)
Headset-Detect Comparator 2 level
(Step size = 0.05 V)
1.External switches. See Section 4.4.2
2.The HP output current limiter threshold spec is valid only while the Class H rails are in VCP Mode.
3.Typical values have ±20% tolerance.
4.Clamp is disabled (HPOUT_CLAMP = 1) and channel is powered down (HPOUT_PDN = 1).
Table 3-17. Power-Supply Rejection Ratio (PSRR) Characteristics
Test conditions (unless specified otherwise):
GNDCP = 0 V; voltages are with respect to ground; VL = VA = 1.8 V, VP = 3.6 V; T
HSIN
PSRR with 100-mVpp signal AC-coupled to VP supply
HSIN
PSRR with 100-mVpp signal AC-coupled to VA supply
HPOUTx (–6-dB analog gain)
PSRR with 100-mVpp signal AC coupled to VA supply
HPOUTx (–6-dB analog gain)
PSRR with 100-mVpp signal AC-coupled to VCP supply
HPOUTx (0-dB analog gain)
PSRR with 100-mVpp signal AC coupled to VP supply
DS1083F2
Fig. 2-1 and Fig. 2-2 show CS42L42 connections; GNDA = GNDL = GNDCP = 0 V; voltages are with respect
= +25°C.
A
Parameters
Typical values have ±25% tolerance.)
switch + PCB stray capacitance (C
HPOUT_PULLDOWN
for additional details.
Fig. 2-1 and Fig. 2-2 show CS42L42 connections; input test signal held low (all zero data); GNDA = GNDL =
Parameters 1
2
2
3 Characteristics and Specifications
+VCP_FILT
–VCP_FILT
+VCP_FILT
–VCP_FILT
+VCP_FILT
–VCP_FILT
+VCP_FILT
–VCP_FILT
1
)
ON
SW1, SW2 R flatness
ON
1
SW3, SW4 R flatness
ON
) 1
+ C + PCB – C
ON OFF STRAY
Section 4.6.4. 2
)
POR
Down
= 0000–0111, 1100
HPOUT_PULLDOWN = 1001
HPOUT_PULLDOWN = 1010
HSDET_COMP1_LVL = 0000
HSDET_COMP1_LVL = 0111
HSDET_COMP1_LVL = 1111
HSDET_COMP2_LVL = 0000
HSDET_COMP2_LVL = 0111
HSDET_COMP2_LVL = 1111
DACx−
DACx+
GNDHS
= +25°C.
A
217 Hz
1 kHz
20 kHz
217 Hz
1 kHz
20 kHz
217 Hz
1 kHz
20 kHz
217 Hz
1 kHz
20 kHz
217 Hz
1 kHz
20 kHz
CS42L42
Minimum Typical Maximum Unit
— 2.6 —
— –2.6 —
— VCP —
— –VCP —
— VCP/2 —
— –VCP/2 —
— VCP/3 —
— –VCP/3 —
— 0.5 —
— 1 —
— — 1
— — 0.075
— — 0.02
— 100 —
— VA —
80 115 160
Up — 0.777 —
— 0.628 —
— 0.9 —
— 9.3 —
— 5.8 —
— 0.65 —
— 1.0 —
— 1.4 —
— 1.65 —
— 2.0 —
— 2.4 —
External Switches
HPSENSx
SW1
–
HPOUTx
+
SW2
HSx_REF
SW3
HSx
SW4
Minimum Typical Maximum
— 88 —
— 83 —
— 73 —
— 70 —
— 70 —
— 55 —
— 75 —
— 75 —
— 70 —
— 85 —
— 85 —
— 65 —
— 80 —
— 80 —
— 60 —
V
V
V
V
V
V
V
V





pF
V
mA
V
V
k
k
k
V
V
V
V
V
V
Speaker
Output x
GND
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
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