AK4425A Datasheet | Asahi Kasei Microdevices

DESCRIPTION The AK4425A is a 5V 24-bit stereo DAC with an integrated 2Vrms output buffer. A charge pump in the buffer develops an internal negative power supply rail that enables a ground-referenced 2Vrms output. Using AKM’s multi bit modulator architecture, the AK4425A delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4425A integrates a bination of switched-capacitor and continuous-time filters, increasing performance for systems with excessive clock jitter. The 24-bit word length and 192k Hz sampling rate make this part ideal for a wide range of consumer audio applications, such as DVD, AV receiver system and set-top boxes. The AK4425A is offered in a space saving 16pin TSSOP package. FEATURES † Sampling Rate Ranging from 8k Hz to 192k Hz † 128 times Oversampling (Normal Speed Mode) † 64 times Oversampling (Double Speed Mode) † 32 times Oversampling (Quad Speed Mode) † 24-Bit 8 times FIR Digital Filter † Switched-Capacitor Filter with High Tolerance to Clock Jitter † Single Ended 2Vrms Output Buffer † Digital De-emphasis Filter: 32k Hz, 44.1k Hz or 48k Hz † Soft mute † Digital Attenuator (Linear 256 Step) † Control I/F: 3-wire † Audio I/F format: 24Bit MSB justified, 24/20/16 LSB justified or I2S patible † Master clock: 256fs, 384fs, 512fs, 768fs or 1152fs (Normal Speed Mode) 128fs, 192fs, 256fs or 384fs (Double Speed Mode) 128fs, 192fs (Quad Speed Mode) † THD+N: -91d B † Dynamic Range: 106d B † Automatic Power-on Reset Circuit † Power supply: +4.5 ∼ +5.5V † Ta = -20 to 85°C † Small Package: 16pin TSSOP (6.4mm x 5.0mm) MS1127-E-01 -1- 2011/03 CSN CC LK CDTI Control Interface LRCK BICK SDTI Audio Data Interface [AK4425A] M CLK De-emphasis Control Clock Divider 8X Interpolator ΔΣ Modulator SCF LPF 8X Interpolator ΔΣ Modulator SCF LPF Charge Pump CP CN VEE VSS1 VDD 1μ 1μ Block Diagram AVDD VSS2 AOUTL AOUTR MS1127-E-01 -2- 2011/03 - Ordering Guide AK4425AET AKD4425A - Pin Layout -20 ∼ +85°C 16pin TSSOP...