參數(shù)資料
型號(hào)： TLV320AIC36IZQE
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA80
封裝： 5 X 5 MM, GREEN, PLASTIC, VFBGA-80
文件頁數(shù)： 132/165頁
文件大小： 1895K
代理商： TLV320AIC36IZQE
ADCVDD
LDO
DACVDD
LDO
DACVSS
LDO
Charge
Pump
Power
Management
Unit
MicBias &
Detect
ADC & PLL
DAC &
LINEOUT
AMPS
HP & REC
AMPS
AnalogCore
TLV320AIC36
GND_REG
AVDD_REG
AVDD2
AVDD1
AVSS1
AVSS_REG
AVDD_CP
FC_POS
FC_NEG
GND_CP
AVDD_BIAS
GND_BIAS
AVDD_ADC
GND_ADC
AVDD_DAC
GND_DAC
AVSS_DAC
AVDD_HP
GND_HP
AVSS_HP
+2.5 V
A1, B2
B1, C2
D1, E2
C1, D2
A9
D7
G9
H9
A6
B7
B8
E8, E9
E7
F8, C9
J1
G1, G2
F3
F1, F2
E1, E3
10 mF
1 mF
10 mF
1 mF
10 mF
REF
LDO
BG
www.ti.com
SBAS387A – MAY 2009 – REVISED JUNE 2010
integrated to generate the appropriate analog voltage supplies from a single 2.1 to 2.8 V supply input. One
positive LDO is used to generate a nominal +1.8 V supply for the input PGA and ADC section and another
positive LDO generates a nominal +1.65 V for the DAC and audio amplifier sections. A negative charge
pump generates a negative voltage which is then regulated to a nominal -1.65 V using a negative LDO.
Figure 5-48 shows suggested hookup from the PMU to the analog core.
Figure 5-48. Recommended Analog Power Supply Connections
Internal voltage references for the analog core are derived from the AVDD_ADC supply inputs. Even in
playback-only applications, the AVDD_ADC supply inputs must be powered to support the internal
references.
5.18.1 Charge Pump
The charge pump uses a minimum 1-mF flying capacitor connected between FC_POS and FC_NEG.
AVDD_CP is the positive (input) supply connection and AVSS_REG is the negative (output) connection. A
1-mF smoothing capacitor is recommended on the AVSS_REG node, although a smaller value can be
used at the expense of increased ripple on the input to the negative regulator.
Copyright 2009–2010, Texas Instruments Incorporated
APPLICATION INFORMATION
69
Product Folder Link(s): TLV320AIC36
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