PAM8908 Amplifier Datasheet

PAM8908 Datasheet PDF, Equivalent


Part Number

PAM8908

Description

25-mW TrueCapFree Stereo Headphone Amplifier

Manufacture

PAM

Total Page 12 Pages
Datasheet
Download PAM8908 Datasheet


PAM8908
PAM8908
25-mW TrueCapFree Stereo Headphone Amplifier
Key Features
n Patent Pending 3 Phase Power Line Shift
Charge Pump Eliminates Need for DC-
Blocking Capacitors
n TrueCapFree Architecture, Output Biased at
0V (System Ground)
n Excellent Low Frequency Fidelity
n High PSRR
n Less Than 1uA Shutdown Current
n Support Both Fully Differential and Single-
Ended Inputs
n Short Circuit and Over Temperature
Protection
n Selectable Gain Settings:-6dB,0dB,3dB and
6dB
n Available in Space Saving Packages:
TQFN3x3-16L
Applications
n Smart Phones/Cellular Phones
n Notebook Computers
n Portable DVD Player
n Personal Digital Assistants (PDAs )
n Electronic Dictionaries
n Digital Still Cameras
n Potable Gaming
Typical Application Circuit
General Description
The PAM8908 stereo headphone driver is
designed for portable equipment where board
space is at a premium. The PAM8908 uses a
unique, patent pending architecture to produce a
ground-refer enced output from a single supply,
eliminating the need for large DC-blocking
capacitors, saving cost, board space, and
component height.
The PAM8908 delivers up to 25mW per channel
into a 16Ω load and has low 0.03% THD+N. A high
power-supply rejection ratio allows this device to
operate from noisy digital supplies without an
additional linear regulator.
The PAM8908 operates from a single supply from
2.5V to 5.5V, has short-circuit and over
temperature protection. Shutdown mode reduces
supply current to less than 1uA.
Typical Application Configuration with Differential Input Signals
OUTR+
Audio OUTR-
Source
OUTL+
OUTL-
1uF
1uF
1uF
1uF
ENABLE
G0
G1
INR+
INR-
OUTR
INL+
OUTL
INL-
PAM8908
EN
G0 SGND
G1 PGND
VBAR
2.2uF
PVDD
HPVDD
CAP+
1uF
HPVSS
CAP-
1uF
1uF
Power Analog Microelectronics, Inc
www.poweranalog.com
1
05/2011 Rev1.0

PAM8908
PAM8908
25-mW TrueCapFree Stereo Headphone Amplifier
Typical Application Circuit
Typical Application Configuration with Single-Ended Input Signal
RIGHT IN
Audio
Source
LEFT IN
ENABLE
G0
G1
VBAT
2.2uF
1uF INR-
1uF INR+
OUTR
1uF INL-
1uF
INL+
OUTL
EN PAM8908
G0 SGND
G1 PGND
PVDD
HPVDD
CAP+
1uF
HPVSS
CAP-
1uF
1uF
Block Diagram
PVDD
INL-
INL+
INR -
INR +
G0
G1
Resistor
Array
HPVDD
-
+
HPVSS
Supply
Control
Short -Circuit
Protection
PGND
OUTL
Resistor
Array
HPVDD
-
+
HPVSS
Gain
Select
On/Off
Pop Free
Thermal
Protection
PVDD
3 Phase
Charge Pump
*Patent Pending
OUTR
CAP+
1uF
CAP-
SGND EN
HPVSS
1uF
HPVDD
1uF
Power Analog Microelectronics, Inc
www.poweranalog.com
2
05/2011 Rev1.0


Features PAM8908 25-mW TrueCapFree Stereo Headpho ne Amplifier Key Features n Patent Pen ding 3 Phase Power Line Shift Charge Pu mp Eliminates Need for DCBlocking Capac itors n TrueCapFree Architecture, Outpu t Biased at 0V (System Ground) n Excell ent Low Frequency Fidelity n High PSRR n Less Than 1uA Shutdown Current n Supp ort Both Fully Differential and Single- Ended Inputs n Short Circuit and Over Temperature Protection n Selectable Gai n Settings:-6dB,0dB,3dB and 6dB n Avail able in Space Saving Packages: TQFN3x3- 16L Applications n Smart Phones/Cellula r Phones n Notebook Computers n Portabl e DVD Player n Personal Digital Assista nts (PDAs ) n Electronic Dictionaries n Digital Still Cameras n Potable Gaming Typical Application Circuit General D escription The PAM8908 stereo headphone driver is designed for portable equipm ent where board space is at a premium. The PAM8908 uses a unique, patent pendi ng architecture to produce a ground-ref er enced output from a single supply, eliminating the need for .
Keywords PAM8908, datasheet, pdf, PAM, 25-mW, TrueCapFree, Stereo, Headphone, Amplifier, AM8908, M8908, 8908, PAM890, PAM89, PAM8, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)