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DA7202 Schematic ( PDF Datasheet ) - Dialog Semiconductor

Teilenummer DA7202
Beschreibung 10W Mono Class-D Amplifier
Hersteller Dialog Semiconductor
Logo Dialog Semiconductor Logo 




Gesamt 25 Seiten
DA7202 Datasheet, Funktion
DA7202
10 W Mono Class-D Amplifier for 2S Battery Devices
Company confidential
General description
DA7202 is a powerful, high efficiency, low EMI Class-D speaker driver that can drive 10 W into 4 Ω
loads directly from a 2S lithium ion battery pack.
DA7202 is a standalone high performance mono Class-D audio amplifier targeted at powering a
variety of two cell portable applications such as Ultrabooks™ and tablets.
It uses a fully-differential switched mode amplifier architecture with a fixed +18 dB gain, with
differential analogue inputs. It also has a PWM modulator and an H-bridged switched power output
stage that delivers 8 W into an 8 Ω load, making a speaker sound louder on portable devices.
The DA7202 can be directly connected between the two-cell battery and the speaker. Noise
suppression circuitry to reduce audible pops and clicks at the speaker output is also included.
Available as a 9-bump WL-CSP package with 0.5 mm pitch that is suited to low cost PCB
technology, it is ideal for portable applications that require small footprints.
Key features
PRMS: 3.8 W into 8 Ω load
at 8.2 V, 1% THD+N
Efficiency: 90% @ POUT = 3.5 W
at 8.2 V, 8 Ω and 85%@POUT = 7.0 W
at 8.2 V, 4
Supports 4 Ω and 8 Ω loads
SNR (A-weighted) 104 dB
THD+N: 90 dB @ 3.0 W, 8.2 V, 8 Ω
PSRR: 78 dB
Auto-Shutdown/Start-up: <3.5 ms
Ultra low standby current: 7 µA
Short-Circuit & Thermal-Overload Protection
with auto recovery
Wide supply voltage range 4.5 to 9.0 V
9-bump WL-CSP with 0.5 mm pitch
2S battery pack
Applications
Tablets
Personal navigation devices
Ultrabooks
Speaker accessories
Handheld gaming devices
Datasheet
CFR0011-120-00 Rev 5
Revision 3a
1 of 25
20-Aug-2015
© 2015 Dialog Semiconductor






DA7202 Datasheet, Funktion
DA7202
10 W Mono Class-D Amplifier for 2S Battery Devices
3 Pinout
123
Company confidential
A IN_P
GND OUT_N
TOP
VIEW
B VLDO GND PVDD
C IN_N
PDN_N
OUT_P
KEY
= Power
= Ground
= Other
Figure 2: Connection diagram
Table 1: Pin description
Pin no. Pin name
Description
A1 IN_P
Positive Analogue Input
A2 GND
Ground
A3 OUT_N
Negative Output
B1 VLDO
Output voltage from LDO
B2 GND
Ground
B3 PVDD
Power Supply
C1 IN_N
Negative Analogue Input
C2 PDN_N
Power Down Control (0 = Power Down / 1 = Active)
C3 OUT_P
Positive Output
Datasheet
Revision 3a
CFR0011-120-00 Rev 5
6 of 25
20-Aug-2015
© 2015 Dialog Semiconductor

6 Page









DA7202 pdf, datenblatt
DA7202
10 W Mono Class-D Amplifier for 2S Battery Devices
9 Typical performance plots
9.1 THD versus output power (8 Ω + 33 µH)
Company confidential
Figure 3: THD versus output power (8 Ω + 33 µH)
9.2 THD versus output power (4 Ω + 33 µH)
Figure 4: THD versus output power (4 Ω + 33 µH)
Datasheet
CFR0011-120-00 Rev 5
Revision 3a
12 of 25
20-Aug-2015
© 2015 Dialog Semiconductor

12 Page





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