參數(shù)資料
型號： CS42L55-DNZR
廠商： Cirrus Logic Inc
文件頁數(shù)： 2/68頁
文件大小： 0K
描述： IC CODEC STER H-HDPN AMP 36-QFN
標(biāo)準(zhǔn)包裝： 6,000
類型： 立體聲音頻
數(shù)據(jù)接口： 串行
分辨率（位）： 24 b
ADC / DAC 數(shù)量： 1 / 1
三角積分調(diào)變： 是
動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： 95 / 99
電壓 - 電源，模擬： 1.65 V ~ 2.71 V
電壓 - 電源，數(shù)字： 1.65 V ~ 2.71 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 36-QFN
供應(yīng)商設(shè)備封裝： 36-QFN-EP（5x5）
包裝： 帶卷 (TR)
配用： 598-1506-ND - BOARD EVAL FOR CS42L55 CODEC
10
DS773F1
CS42L55
2. TYPICAL CONNECTION DIAGRAM
Note 2
2.2 F
Note 1
Analog
Input 1
Analog
Input 2
1 F
GND/Thermal Pad
VL
0.1 F
+1.65 V to +3.47 V
SCL
SDA
RESET
2 k
Ω
LRCK
MCLK
SCLK
2.2 F
+VHPFILT
VDFILT
LINEREF
SDIN
SDOUT
1 F
AIN2REF
AIN1A
1800 pF
100 k
Ω
100
Ω
AIN1B
*
Digital Audio
Processor
AIN2A
1800 pF
AIN2B
*
FLYC
FLYN
-VHPFILT
2.2 F
1 F
100 k
Ω
100
Ω
100
Ω
100
Ω
100 k
Ω
100 k
Ω
2.2 F
**
VCP
AIN1REF
1 F
LINEOUTA
LINEOUTB
0.1 F
VA
+1.65 V to +2.71 V
0.1 F
VLDO
2.2 F
VQ
AGND
NPO/C0G dielectric capacitors.
1000 pF
AFILTA
AFILTB
1000 pF
2.2 F
*
HPOUTB
HPOUTA
Headphone Out
Left & Right
33
Ω
0.1 F
HPDETECT
33
Ω
0.1 F
47 k
Ω
HPREF
FILT+
+1.65 V to +2.71 V
FLYP
2.2 F **
**
Note 1
Notes:
1. The headphone amplifier’s output power and distortion are rated using the nominal capacitance shown. Larger capacitance
reduces the ripple on the internal amplifiers’ supplies and in turn reduces the amplifier’s distortion at high output power levels.
Smaller capacitance may not sufficiently reduce ripple to achieve the rated output power and distortion. Since the actual value
of typical X7R/X5R ceramic capacitors deviates from the nominal value by a percentage specified in the manufacturer’s data
sheet, capacitors should be selected based on the minimum output power and maximum distortion required.
2. The headphone amplifier’s output power and distortion are rated using the nominal capacitance shown and using the default
charge pump switching frequency. The required capacitance follows an inverse relationship with the charge pump’s switching
frequency. When increasing the switching frequency, the capacitance may decrease; when lowering the switching frequency,
the capacitance must increase. Since the actual value of typical X7R/X5R ceramic capacitors deviates from the nominal value
by a percentage specified in the manufacturer’s data sheet, capacitors should be selected based on the minimum output
power, maximum distortion and maximum charge pump switching frequency required.
3. Additional bulk capacitance may be added to improve PSRR at low frequencies.
4. These capacitors serve as a charge reservoir for the internal switched capacitor ADC modulators and should be placed as
close as possible to the inputs. They are only needed when the PGA (Programmable Gain Amplifier) is bypassed.
5. Input pairs (such as AIN2A, AIN2REF and AIN2B) may be left floating if they are not used.
Note 4
Note 3
2 k
Ω
*
**
Low ESR, X7R/X5R dielectric capacitors.
**
Note 5
**
562
Ω
562
Ω
3300 pF
Rext
LPF is Optional
Line Level Out
Left & Right
3300 pF
*
Figure 1. Typical Connection Diagram
CS42L55
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