ISL54005IRTZ Intersil, ISL54005IRTZ Datasheet - Page 8

• Manufacturer Part Number: ISL54005IRTZ
• Description: IC AMP AUDIO PWR 1.23W AB 20TQFN
• Manufacturer: Intersil
• Type: Class ABr

Specifications of ISL54005IRTZ

• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1.23W x 1 @ 8 Ohm; 215mW x 2 @ 16 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Input Multiplexer, Shutdown, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 20-TQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ISL54006 Typical Application Circuit and Block Diagram
Detailed Description
The Intersil ISL54003, ISL54005, and ISL54006 family of
devices are integrated audio power amplifier systems
designed to provide quality audio, while requiring minimal
external components. The low 0.4% THD+N ensures clean,
low distortion amplification of the audio signals. The devices
are designed to operate from a single +2.7V to +5V power
supply. All devices are offered in a 20 Ld 4x4 TQFN package.
Targeted applications include battery powered equipment
such as cell-phones, MP3 players, and games/toys.
These parts contain one class AB BTL type power amplifier
for driving an 8Ω mono speaker and two class AB
single-ended (SE) type amplifiers for driving 16Ω or 32Ω
headphones.
The BTL when using a 5V supply is capable of delivering
800mW (typ) with 0.4% THD+N and 941mW (typ) with 1%
THD+N of continuous average power into an 8Ω BTL speaker
load. When the speaker load is connected across the
positive and negative terminals of the BTL driver the voltage
is doubled across the load and the power is quadrupled.
Each SE amplifier when using a 5V supply is capable of
delivering 15mW (typ) with 0.07% THD+N and 50mW (typ)
with 0.3% THD+N of continuous average power into a 32Ω
headphone speaker.
RIGHT 1 AUDIO
RIGHT 2 AUDIO
LEFT 1 AUDIO
LEFT 2 AUDIO
CONTROLLER
MICRO
0.22µF
0.22µF
0.22µF
0.22µF
8
IN
IN
IN
IN
SD
INS
MIX
HO
1R
2R
1L
2L
CLICK AND POP
ISL54003, ISL54005, ISL54006
LOGIC CONTROL
ROUTER/
MIXER
MUX/
PROTECTION
THERMAL
When in Mono Mode (BTL driver active) these devices
automatically mix the active left and right audio inputs and
send the combined signal to the BTL driver. In Headphone
Mode the active right channel input is sent to the right
headphone speaker and the active left channel is sent to the
left headphone speaker.
The ISL54005 and ISL54006 feature a 2:1 stereo input
multiplexer front-end. This allows selection between two
stereo sources. The INS control pin determines which stereo
input is active. Applying logic “0” to the INS control pin
selects stereo input 1 (R
INS control pin selects stereo input 2 (R
The ISL54006 has the capablity of mixing the two stereo
inputs. When in MIX Mode and HEADPHONE Mode, the
part mixes the R
combined signal to the HpR headphone driver and it mixes
the L
to the HpL headphone driver. When in MIX Mode and
MONO Mode, it mixes all four inputs (R
sends the combined signal to the BTL mono driver.
These parts have headphone sense input circuitry that
detects when a headphone jack has been inserted and
automatically switches the active audio inputs from the mono
BTL output driver to the headphone drivers. These parts also
feature a logic control pin (HO) that can override the sense
input circuitry.
1
BIAS
input with the L
BTL
SE
SE
GND
V
DD
0.1µF
SPK+
V
SPK-
HpR
DD
REF
HpL
1
HD
input with the R
C
2
1µF
REF
input and sends the combined signal
1
and L
10k
100k
Ω
1
Ω
). Applying logic “1” to the
2
input and sends the
HEADPHONE JACK
1
2
+ R
and L
2
+ L
2
).
October 30, 2007
1
+ L
FN6514.2
2
) and