CM6533-N Datasheet, PDF (53/60 Pages) C-Media Electronics – USB 2.0 Full-Speed compliant

CM6533,CM6533N,CM6533X1,CM6533DH
USB Audio Chip
9.5 Analog Audio
Parameter
Symbol Pin Name
Limit Values
Unit
Min. Typ. Max
Test Conditions
Signal Reference Voltage
XVAG
XVAG 1.65 1.75 1.85 V
RLoad>> 10 M
Microphone Input Clipping
Level (at minimum input
volume, i.e., 0 dB)
VMI
XMICL
XMICR
Analog Output Voltage AC
VAO
XLNOUTL
XLNOUTR
Microphone Input Impedance MII
XMICL
XMICR
20
Microphone A-A Input
Impedance
MAII
XMICL
XMICR
Headphone Output
Impedance
HPOI
XLNOUTL
XLNOUTR
9.6 USB Transceiver
2.828 ^Vpp
2.828 Vpp
45 k
20
k
32

Parameter
Symbol Pin Name
Limit Values
Unit
Min. Typ. Max
Volume = dB
Volume = dB
Test Conditions
Regulator Voltage
XV33
XV33
3.0 3.3 3.6
V
CL =10uF
Driver Output Impedance
including the 22External
Serial Resistor
RO
D+/D−
24
40

Rise and Fall Times
tr/tf
3
10 19 ns
Rise/Fall Time Matching
MA_TRT
F
90
110 %
Crossover Voltage
VXOVER
1.30 1.75 2.0
V
Differential Receiver
Common-Mode Range
Single-ended Receiver
Threshold Voltage
VCM_DR
EC
VT_SREC
0.8
2.5
V
0.8
2.0
V
Switchable Pull-up Resistor
RPU VREG, D+
1.5
k
9.7 Microphone Bias
Parameter
Open Circuit Voltage
Microphone Bias
Symbol Pin Name
Limit Values
Unit
Min. Typ. Max
VMICBIA
S
MICBIAS
2.55 2.75 2.95
V
static, LOW or HIGH
CL = 50 pF, driver mode
CL = 50 pF, driver mode
CL = 50 pF, driver mode
Test Conditions
Output Current
Microphone Bias
Output Impedance
Microphone Bias
Power Supply Rejection
Ratio for Microphone Bias
IMICBIAS MICBIAS
1.25 mA
RMIN=2.2k
ROUTMI
CB
MICBIAS
600
650
700

Internal regulators active,
PSRRMIC AVDD,
B
MICBIAS
100
dB
at maximum load current
(0.5 mA), 1 kHz sine wave at
100 mVrms
Page 53 / 60
Rev.1.6
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