AAT5101 Advanced Analogic Technologies, Inc., AAT5101 Datasheet

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AAT5101

Manufacturer Part Number
AAT5101
Description
2.5w Mono Filter-free Class D Audio Power Amplifier
Manufacturer
Advanced Analogic Technologies, Inc.
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AAT5101IUR-T1
Manufacturer:
MITSUBISHI
Quantity:
43
Description
The AAT5101 is a high efficiency, 2.5W mono class D
audio power amplifier. The low noise, filterless PWM
architecture eliminates the output filter, reduces the
external component count and system cost, and simpli-
fies system design. With high efficiency of up to 92% and
the industry lowest 1.35mA quiescent current, it increas-
es battery lifetime and dramatically lowers the junction
temperature. The space saving wafer-level chip scale
package (WLCSP) and minimum external component
requirements make it ideal for cellular phones and
PDAs.
With high PSRR, low THD+N, and 91dB SNR, the
AAT5101 guarantees clean sound across the wide audio
output power range and the full audio frequency domain.
Short circuit and thermal protection with self-recovery
prevents the device from being damaged during over
current conditions.
In cellular phones, the earpiece, speaker phone and
melody ringer can each be driven by the AAT5101. Also,
proprietary technology successfully suppresses pop and
click noise.
Typical Application
SwitchReg
5101.2009.04.1.3
TM
Differential
input
+
-
R
R
I
I
IN +
IN -
SHUTDOWN
+
-
2.5W Mono Filter-Free Class D Audio Power Amplifier
w w w . a n a l o g i c t e c h . c o m
Shutdown Control
V
PWM
DD
Features
• Maximum Battery Life and Minimum Heat
• Large Output Power Capabilities
• Pop and Click Noise Suppression Circuitry
• Thermal and Output Short Circuit Protection with Self-
• High Performance, THD+N of 0.12% at 5V, 8Ω Load
• Filter-less Capability
• Internally Generated 250 kHz Switching Frequency
• Excellent PSRR and Wide Supply Voltage Range (2.1V
• Fully Differential Design
• External Gain Configuration Capability
• 9-Pin Wafer-Level Chip Scale Packaging (WLCSP)
Applications
• Cellular Phones
• MP4s
• Notebook Computers
• PDAs
• Portable DVD Players
recovery
and P
to 5.5V)
To Battery
1.35mA Quiescent Current
0.06μA Shutdown Current
Up to 92% Efficiency
1.35W with 8Ω Load and THD+N < 1%
2.5W with 4Ω Load and THD+N < 10%
C
S
OUT
= 1.0W
GND
H-Bridge
PRODUCT DATASHEET
V
V
O
O
-
+
AAT5101
R
L
1

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AAT5101 Summary of contents

Page 1

... TM SwitchReg Description The AAT5101 is a high efficiency, 2.5W mono class D audio power amplifier. The low noise, filterless PWM architecture eliminates the output filter, reduces the external component count and system cost, and simpli- fies system design. With high efficiency 92% and the industry lowest 1 ...

Page 2

... Positive BTL output WLCSP-9 (Top View) . IN+ GND VO VDD PVDD GND IN- VO+ SHUTDOWN PRODUCT DATASHEET PRODUCT DATASHEET AAT5101 AAT5101 5101.2009.04.1.3 5101.2009.04.1.3 ...

Page 3

... Mono Filter-Free Class D Audio Power Amplifier Active Mode Shutdown Mode = 85° PRODUCT DATASHEET PRODUCT DATASHEET AAT5101 AAT5101 Max Units 5.5 V 6.0 1.5 A -40 to +85 °C 165 ° ...

Page 4

... P = 1.0W 8Ω OUT L = 3.6V 1Vpp IC = 3.6V, Inputs AC-ground with V RIPPLE = 4Ω PRODUCT DATASHEET PRODUCT DATASHEET AAT5101 AAT5101 Min Typ Max 2.1 5.5 1.72 3.2 1.35 0.87 2.5 0.06 1 2.0 1.5 200 250 300 285KΩ ...

Page 5

... Mono Filter-Free Class D Audio Power Amplifier 1, 2 AAT5101 VO+ Load 30kHz Low Pass VO- VDD GND 4.7μ PRODUCT DATASHEET PRODUCT DATASHEET AAT5101 AAT5101 + Measurement Filter Input - 5 5 ...

Page 6

... 1.2 1.4 1.6 = 8Ω 8Ω Speaker L 5.5 6 PRODUCT DATASHEET PRODUCT DATASHEET AAT5101 AAT5101 Efficiency vs. Output Power (f = 1kHz 4Ω + 33μ 0.5 1.0 1.5 2.0 Output Power (W) Supply Current vs ...

Page 7

... OUT 0.1 0.01 100000 3.0 2.5 2.0 1.5 1.0 THD 0.5 THD+N = 10% 0.0 4.5 5 PRODUCT DATASHEET PRODUCT DATASHEET AAT5101 AAT5101 THD+N vs. Output Power (f = 1kHz 4Ω 2.1V DD 0.01 0.1 1 Output Power (W) THD+N vs ...

Page 8

... 2.1V DD -70 100000 10 100000 PRODUCT DATASHEET PRODUCT DATASHEET AAT5101 AAT5101 PSRR vs. Frequency = 2.2μ 4Ω; Inputs AC-grounded 2.1V DD ...

Page 9

... Optional Output Filter The AAT5101 can be designed without an output filter if the traces from the amplifier to the speaker are short. However, to lower radiated emissions as much as possi- ble when used in filter-free mode, a ferrite bead filter can be used ...

Page 10

... TM SwitchReg Differential input Figure 2: AAT5101 Application Schematic with DC-Coupled Fully Differential Input Configuration Differential input Figure 3: AAT5101 Application Schematic with AC-Coupled Fully Differential Input Configuration. 10 2.5W Mono Filter-Free Class D Audio Power Amplifier To Battery PWM ...

Page 11

... Figure 4: AAT5101 Application Schematic with Single-Ended Input Configuration Differential I1 - input Differential input Figure 5: AAT5101 Application Schematic with AAT5101 Summing Two Differential Inputs. 5101.2009.04.1.3 2.5W Mono Filter-Free Class D Audio Power Amplifier To Battery PWM + Shutdown Control SHUTDOWN To Battery ...

Page 12

... Figure 6: AAT5101 Application Schematic with AAT5101 Summing Differential Input and Single-Ended Input Signals Single-ended Input Single-ended Input Figure 7: AAT5101 Application Schematic with AAT5101 Summing Two Single-Ended Inputs. 12 2.5W Mono Filter-Free Class D Audio Power Amplifier To Battery PWM + IN + Shutdown Control SHUTDOWN To Battery C S ...

Page 13

... TM SwitchReg PCB Guidance The suggested PCB layout for the AAT5101 is shown in Figure 9. All components are placed as close as possible to the AAT5101's leads to achieve better performance. The following guidelines should be used to help ensure a proper layout. 1. The decoupling capacitor (C4) should connect to the VDD pin and PVDD pin as closely as possible. ...

Page 14

... TM TM SwitchReg SwitchReg (a) Top Layer (c) Power Plane Figure 9: AAT5101 Evaluation Board PCB Layout 2.5W Mono Filter-Free Class D Audio Power Amplifier 2.5W Mono Filter-Free Class D Audio Power Amplifier (b) Ground Plane (d) Bottom Layer ...

Page 15

... Bottom View PRODUCT DATASHEET PRODUCT DATASHEET AAT5101 AAT5101 2 AAT5101IUR-T1 0.320 ± 0.020 0.235 ± 0.020 0.415 ± 0.040 1.420 ± 0.025 Side View 15 15 ...

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