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PDF ISL99201 Data sheet ( Hoja de datos )
| Número de pieza | ISL99201 | |
| Descripción | Filterless High Efficiency 1.5W Class D Mono Amplifier | |
| Fabricantes | Intersil Corporation | |
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®
Data Sheet
February 27, 2009
ISL99201
FN6742.0
Filterless High Efficiency 1.5W Class D
Mono Amplifier
The ISL99201 is a fully integrated high efficiency class-D
mono amplifier. It is designed to maximize performance for
mobile phone applications. The application circuit requires a
minimum requirement of external components and operates
from a 2.4V to 5.5V input supply. It is capable of delivering
1.4W of continuous output power with less than 1% THD+N
driving a 8Ω load from a 5V supply.
The ISL99201 features a high-efficiency, low-noise
modulation scheme. It operates with 86% efficiency at
400mW into 8Ω and has a signal-to-noise ratio (SNR) that is
better than 95dB. The ISL99201 has a micro-power
shutdown mode with a typical shutdown current of 200nA.
Shutdown is enabled by applying a logic low to the SD pin.
The architecture of the devices allows it to achieve very low
level of pop-and-click. This minimizes voltage glitches at the
output during turn-on and turn-off, thus reducing audible
noise on activation and deactivation.
The fully differential input of the ISL99201 provides excellent
rejection of common mode noise on the input typically 75dB.
EMI suppression is achieved by SRC (Slew Rate Control).
The ISL99201 oscillator can be synchronized to an external
clock through the SYNC input, allowing the switching
frequency to be externally defined. The SYNC input also
allows multiple ISL99201 to be cascaded and frequency
locked; minimizing interference due to clock intermodulation.
SYNC is available only in DFN version.
www.TDhateaSIShLe9et942U0.c1oamlso has excellent rejection of power supply
noise, including noise caused by GSM transmission bursts
and RF rectification. PSRR is typically 75dB at 217Hz. There
will be 4 versions of the part; they will consist of three fixed
gain settings (6dB, 9.6dB, 12dB) and one user
programmable gain setting (need external resistors).
The ISL99201 has built-in thermal shutdown and output
short-circuit protection.
Features
• Filterless Class D with Efficiency > 86% at 400mW
• Click-Pop Suppression
• Slew Rate Control
• Spread Spectrum Switching
• Optional SYNC Pin for Master/Slave Operation Without
Interface (Only in TDFN)
• 1.4W into 8Ω with Less than 1% THD+N
• 2.4V to 5.5V Single Supply Voltage
• Built-in Resistors to Reduce Board Component Count
• Only One External Component Required (Fixed Gain
Mode)
• Short Circuit and Thermal Protection
• Gain Programmable 6dB, 9.6dB, 12dB and User
Programmable
• Pb-Free (RoHS compliant)
Applications
• Mobile Phones
• MP3 Players
• Portable Gaming
• Portable Electronics
• Educational Toys
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL99201
Electrical Specifications
Typical Values Are Tested at VDD = 5V and the Ambient Temperature at +25°C. Parameters with MIN and/or
MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by
characterization and are not production tested. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
Supply Current
GAIN CONTROL
IIN
ISD
(Note 6)
VIN = 0V, No load, VDD = 5V
VIN = 0V, No load, VDD = 3.6V
VIN = 0V, 8Ω + 33µH, VDD = 5V
VIN = 0V, 8Ω + 33µH, VDD = 3.6V
SD = GND
3.9
3.2 3.75
3.9
3.8
0.2 0.4
mA
mA
mA
mA
µA
Closed-Loop Gain
D version user program
( Max Gain, Ri = 0Ω)
27.5 28.5 29.5
dB
A version
5.7 6 6.3 dB
B version
9.2 9.6 10
dB
C version
11.5 12 12.5
dB
Differential Input Impedance
ZIN SD = VDD, A version
SD = VDD, B version
SD = VDD, C version
SD = VDD, D version, Ri = 2.5kΩ
SD = GND
70
46.25
35
7.5
100
kΩ
kΩ
kΩ
kΩ
kΩ
SHUTDOWN CONTROL
Input Voltage High
VIH
1.2 V
Input Voltage Low
VIL
Turn-on Time
tWU SD rising edge from GND to VDD
Turn-off Time
tSD SD falling edge from VDD to GND
Output Impedance
ZOUT SD = GND
NOISE PERFORMANCE
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Output Voltage Noise
En VDD = 3.6V, f = 20Hz to 20kHz, inputs are AC grounded,
AV = 6dB, A-weighting
VDD = 3.6V, f = 20Hz to 20kHz, inputs are AC grounded,
AV 0 = 6dB, no weighting
Signal-to-Noise Ratio
SNR POUT = 1W, RL= 8Ω
NOTE:
6. Limits established by Characterization and are not production tested
0.5
3.5
5
>100
27
35
102
V
ms
µs
kΩ
µV
µV
dB
5 FN6742.0
February 27, 2009
5 Page 
Typical Applications (Continued)
ISL99201
SYNC
DIFFERENTIAL
INPUT
ZIN
C1 RI VIN+
RI
C2
VIN-
RI, REV D
SD
SAWTOOTH
GENERATOR
VDD
C3
H-BRIDGE
VO+
+
PWM
POWER
STAGE
AND
- SR
CONTROL
VO-
BIAS
AND
REFERENCE
GND
FIGURE 23. TYPICAL CIRCUIT WITH SINGLE-ENDED INPUT
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11 FN6742.0
February 27, 2009
11 Page | ||
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