[AK4213]
AK4213
Mono Class-D SPK-Amp with Stereo Cap-less HP-Amp
GENERAL DESCRIPTION
The AK4213 is an audio mono class-D speaker amplifier with stereo cap-less headphone amplifier. The
AK4213 features analog mixing circuit that allow easy interfacing in mobile phone and portable A/V player
designs. The input circuit supports both of single-ended and differential modes, and headphone supports
stereo and mono modes. The speaker amplifier includes ALC (Automatic Level Control) circuit which is
able to stabilize each output sound levels. The AK4213 is available in CSP package (3.0mm x 3.0mm),
utilizing less board space than competitive offerings.
FEATURE
Single-ended / Differential Input
Analog Mixing Circuit
Analog Input Volume: +10dB to –20dB, 2dB step
µP Interface: I
2
C Bus (Ver1.0, 400 kHz Fast-Mode)
Thermal Shutdown / Short Protection circuit
Mono Class-D Speaker Amplifier:
- BTL output
- Output Power: 1.6W @ 8Ω, SVDD=5V
0.8W @ 8Ω, SVDD=3.6V
- THD+N: -65dB @ 8Ω, Po = 0.25W, SVDD=3.6V
- Output Noise Level: 85μVrms
- ALC (Automatic Level Control) Circuit
- Bypass Mode
- Pop Noise Free at Power-ON/OFF and Mute
- External filter-less
Stereo Cap-less Headphone Amplifier:
- Mono / Stereo Mode
- Output Power: 64mW x 2ch @ 16Ω, SVDD=3.3V, THD+N=-40dB
- THD+N: -58dB @ 16Ω, Po=30mW, SVDD=3.3V
- Output Noise Level: 24μVrms
- Output Volume: +12dB to –50dB, 2dB Step
- Pop Noise Free at Power-ON/OFF and Mute
Power Supply:
- Analog: 2.6V
∼
3.6V
- Headphone Amplifier: 2.6V
∼
3.6V
- Speaker Amplifier: 3.0V
∼
5.5V
- Digital Interface: 1.6V
∼
3.6V
Ta:
−4
0
∼
85°C
Package: 29pin CSP (3.0mm x 3.0mm, 0.5mm pitch)
MS0949-E-01
-1-
2008/07
AKM [ ASAHI KASEI MICROSYSTEMS ]
