SGM4917 Datasheet PDF - SG Micro


www.Datasheet-PDF.com

SGM4917
SG Micro

Part Number SGM4917
Description Stereo Headphone Amplifier
Page 10 Pages

SGM4917 datasheet pdf
View PDF for PC
SGM4917 pdf
View PDF for Mobile


No Preview Available !

Preliminary Datasheet
SGM4917
125mW, Capless, Stereo Headphone
Amplifier with Shutdown
GENERAL DESCRIPTION
The SGM4917 stereo headphone amplifier is designed
for portable equipment where board space is at a
premium. The SGM4917 uses capless Direct-drive
architecture to produce a ground-referenced output from
a single power supply, eliminating the need for large
DC-blocking capacitors for output, and saving cost, board
space, and component height. Additionally, for
SGM4917B and SGM4917C, the gain is set internally
(-2V/V or -1.5V/V), further reducing component count.
For SGM4917A, the Gain can be adjusted by external
feedback resistors.
The SGM4917 delivers up to 125mW per channel into a
32load and has low 0.02% THD+N. A 78dB at 217Hz
power-supply rejection ratio (PSRR) allows this device to
operate from noisy digital supplies without an additional
linear regulator. Comprehensive click-and-pop circuitry
suppresses audible clicks and pops on startup and
shutdown.
FEATURES
SGM4917A: External Feedback Gain Network
SGM4917B: Fixed -2V/V Gain
SGM4917C: Fixed -1.5V/V Gain
No Bulky DC-Blocking Capacitors Required
Ground-Referenced Outputs Eliminate DC-Bias
Voltage on Headphone Ground Pin
No Degradation of Low-Frequency Response Due
to Output Capacitors
Differential Inputs for Enhanced Noise Cancellation
125mW per Channel into 32Headset
Low 0.02% THD+N
High PSRR (78dB at 217Hz)
Integrated Click-and-Pop Suppression
2.7V to 5.5V Single Supply Operation
Low Quiescent Current (2.7mA)
Shutdown Control
Undervoltage Lockout Function
-40to +85Operating Temperature Range
Green TSSOP16 and TQFN3×3-16L Packages
The SGM4917 operates from a single 2.7V to 5.5V
supply, consume only 2.7mA of supply current, and is
specified over the extended -40°C to +85°C temperature
range. The SGM4917 is available in a Green TSSOP16
and TQFN3×3-16L packages.
APPLICATIONS
Notebook PCs
Cellular Phones
PDAs
MP3 Players
Smart Phones
Portable Audio Equipment
SG Micro Limited
www.sg-micro.com
April 27, 2011



No Preview Available !

SGM4917
125mW, Capless, Stereo Headphone
Amplifier with Shutdown
PACKAGE/ORDERING INFORMATION
MODEL
SGM4917
ORDER NUMBER
SGM4917YTQ16G/TR
SGM4917YTS16G/TR
PACKAGE
DESCRIPTION
TQFN3×3-16L
TSSOP16
MARKING
INFORMATION
4917TQ
SGM4917YTS16
PACKAGE
OPTION
Tape and Reel, 3000
Tape and Reel, 3000
ABSOLUTE MAXIMUM RATINGS
PGND to SGND ...................................................-0.3V to +0.3V
PVDD and SVDD to PGND or SGND.........................-0.3V to +6V
PVSS and SVSS to PGND.........................................+0.3V to -6V
IN_ to SGND............................... (SVSS - 0.3V) to (SVDD + 0.3V)
OUT_ to PGND........................... (SVSS - 0.3V) to (SVDD + 0.3V)
SHDN_ to SGND..................... (SGND - 0.3V) to (SVDD + 0.3V)
C1P to PGND......................................... - 0.3V to (PVDD + 0.3V)
C1N to PGND........................................ (SVSS - 0.3V) to + 0.3V
PVDD to SVDD .........................................................................0V
PVSS to SVSS ..........................................................................0V
Output Short Circuit to GND or VDD...........................Continuous
Junction Temperature.....................................................+150
Operating Temperature Range ..........................-40to +85
Storage Temperature Range ...........................-65to +150
Lead Temperature (soldering, 10s) ................................+260
CAUTION
This integrated circuit can be damaged by ESD if you don’t pay
attention to ESD protection. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failure to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage because
very small parametric changes could cause the device not to
meet its published specifications.
SGMICRO reserves the right to make any change in circuit
design, specification or other related things if necessary without
notice at any time. Please contact SGMICRO sales office to get
the last datasheet.
Note: Stresses above those listed under Absolute Maximum
Ratings may cause permanent damage to the device. This is a
stress rating only; functional operation of the device at these or
any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
SG Micro Limited
www.sg-micro.com
2



No Preview Available !

SGM4917
PIN CONFIGURATION (Top View)
125mW, Capless, Stereo Headphone
Amplifier with Shutdown
INL+ 1
16 INL-
SHDN 2
PVDD 3
C1P 4
PGND 5
C1N 6
PVSS 7
SGM4917
15 SVDD
14 OUTL
13 SVSS
12 OUTR
11 SVDD
10 INR-
16 15 14 13
PVDD 1
12 OUTL
C1P 2
PGND 3
SGM4917
11 SVSS
10 OUTR
C1N 4
9 SVDD
5 6 78
SGND 8
TSSOP16
PIN DESCRIPTIONS
9 INR+
TQFN3×3-16L
PIN NAME
DESCRIPTION
Charge-Pump Power Supply. Powers charge-pump inverter, charge-pump logic, and
1 PVDD oscillator. Connect to positive supply (2.7V to 5.5V). Bypass with a 1µF capacitor to
PGND as close to the pin as possible.
2 C1P Flying Capacitor Positive Terminal
3 PGND Power Ground. Connect to ground.
4 C1N Flying Capacitor Negative Terminal
5 PVSS Charge-Pump Output. Connect to SVSS.
6 SGND Signal Ground. Connect to ground.
7 INR+ Noninverting Right-Channel Audio Input
8 INR- Inverting Right-Channel Audio Input
9,13
SVDD
Amplifier Positive Power Supply. Connect to positive supply (2.7V to 5.5V). Bypass with a
1µF capacitor to SGND as close to the pin as possible.
10 OUTR Right-Channel Output
11 SVSS Amplifier Negative Power Supply. Connect to PVSS.
12 OUTL Left-Channel Output
14 INL- Inverting Left-Channel Audio Input
15 INL+ Noninverting Left-Channel Audio Input
16 SHDN Active-Low Shutdown Input
-— EP Exposed Paddle. Leave unconnected.
SG Micro Limited
www.sg-micro.com
3



No Preview Available !

SGM4917
125mW, Capless, Stereo Headphone
Amplifier with Shutdown
ELECTRICAL CHARACTERISTICS
(PVDD = SVDD = +5V, PGND = SGND = 0V, SHDN = SVDD, C1 = C2 = 1µF, RL = , resistive load referenced to ground, for
SGM4917A gain = -1V/V (RIN = RF = 10k), for SGM4917B and SGM4917C (internally set). Typical values are at TA = +25°C, unless
otherwise noted.)
PARAMETER
GENERAL
Supply Voltage Range
Quiescent Supply Current
Shutdown Supply Current
SHDN Input Logic High
SHDN Input Logic Low
SHDN to Full Operation Time
AMPLIFIERS
Voltage Gain
Gain Matching
Input Offset Voltage
Input Impedance
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
Output Power
Output Impedance in Shutdown
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Maximum Capacitive Load
Charge-Pump Oscillator
Frequency
Crosstalk
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
SYMBOL
CONDITIONS
VDD
IDD
I SHDN
VIH
VIL
tSON
Guaranteed by PSRR test
RL = , SHDN = VDD
SHDN = SGND
AV
VIS
RIN
CMRR
PSRR
POUT
SGM4917B
SGM4917B, between the right and left
channels
Between IN_+ and IN_-, AC-coupled
(SGM4917A)
SGM4917B, measured at IN_
Input referred, SGM4917A, TA = +25°C
DC, VDD = 2.7V to 5.5V
f = 217Hz, VRIPPLE = 200mVP-P
f = 10kHz, VRIPPLE = 200mVP-P
RL = 32, THD+N = 1%, TA = +25°C
THD+N
SNR
CL
fOSC
RL = 32, POUT = 55mW, f = 1kHz
RL = 32, POUT = 20mW, BW < 20kHz
No sustained oscillation
RL = 32, VIN = 200mVP-P, f = 10kHz
AV = -1V/V
MIN TYP MAX UNITS
2.7 5.5
2.7
0.01
1.2
0.4
3.2
V
mA
µA
V
V
ms
1.99
0.2
0.4
14.6
-70
-85
-78
-70
125
1.92
0.02
100
200
350
90
160
24
V/V
%
mV
k
dB
dB
mW
k
%
dB
pF
kHz
dB
°C
°C
SG Micro Limited
www.sg-micro.com
4




SGM4917 datasheet pdf
Download PDF
SGM4917 pdf
View PDF for Mobile


Similiar Datasheets : SGM4914 SGM4915 SGM4916 SGM4917 SGM4918 SGM4995 SGM4996

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Privacy Policy + Contact