Document
AVS Technology
FEATURES • Six Channel 24/20-bit DACs. - 102 dB SNR - 104 dB Dynamic Range. - -90 dB THD + N Ratio. - 32, 44.1 48 and 96 KHz. Sampling rates. - 20-bit and 24-bit Digital Inputs. - Containing Digital De-emphasis Filters. - Digital Volume Control. - I2S, Left and Right Justified Digital Input Formats. - Auto-Mute Control. - On -chip Reconstruction Filters. • Two Channel Stereo ADCs - 32, 44.1 and 48 KHz. Sampling Rate. - 100 dB SNR and Dynamic Range. - -96 dB THD + N Ratio.
AV2188
Multi-Channel Audio CODEC
- I2S and Left Justified Output Formats. • System clock: 384 fs for 32, 44.1 or 48 KH. Sampling Rates, 194 fs for 96 KHz. Sampling Rate. General • Automatic input format detection. • 5-volt Power Supply. • 3.3 -volt Digital Interface Frindly. • I2C Interface for Mode Setting. Applications • Digital Surround Sound For Home Theater • DVD • Car Audio. Ordering Information • 28 pin SOJ package
SDA SCL
80
I2C Serial Control Port
AV2188
D/A D/A
40KHz 40KHz 40KHz 40KHz 40KHz 40KHz VOR3 VOL3
SD1 SD2 SD3
5th Order Σ∆ Modulators
Digital Volume
De-Emphasis
96 Times Over-sampling Filters
80
D/A D/A D/A D/A
VOR2 VOL2 VOR1 VOL1
Audio I/F
Serial
77
SDOUT
80
SF SC
77 78
High Pass Filter
Format Detect'n
PLL
Decimation Filter
A/D A/D
BIN AIN
15
XCK
RST
AVS Technology Inc. 4110 Clipper Ct., Fremont CA94538 Tel: (510) 353-0848 Fax: (510) 353-0856
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June 2, 2000
AV2188
Item
PERFORMANCE SPECIFICATIONS
Audio DAC
Spec.
1 2 3 4 5 6 7 8 9 10
Audio Output Level Audio Bandwidth 20Hz - 20 KHz SNR (A-weight, Muted) SNR (A-weight, Not Muted) THD + N (A-weight, 0.5 FFS Output) THD + N (A-weight, FFS Output) Dynamic Range Channel Separation Nonlinear Distortion Channel Gain Error
1 Vrms +/- 0.5 dB >102 dB >96 dB < -100 dB < -92 dB 104 dB < -97 dB < 0.25 dB < 0.1 dB
Audio ADC
1 2 2 3 4 4 Full Scale Audio Input Level Maximum Input Level Audio Bandwidth SNR THD + N (A-weight, 0.5 FFS Input) Dynamic Range 1.5 Vp-p 5.0 Vp-p 20 KHz 98 dB 96 dB 98 dB
All Measurement were taken with only one channel active.
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June 2, 2000
AV2188 DESCRIPTION
The AV2188 is a mixed signal CMOS monolithic audio CODEC. It consists six channels sigma delta DACs and two channels sigma delta ADCs. The DACs support 20-bit and 24-bit input data, while the ADCs provides 24-bit MSB justified data output.
XCK REQUIREMENT
The AV2188 support 384 and 256 times sampling clock for 32, 44.1 and 48 K audio; 192 and 128 times for the 96 K audio.; and 96 and 64 times for the 192K audio. .
XCK Requirement
Sampling Rate 32 K 44.1 48 K 96 K 192 K XCK Freq. 384*fs 12.288 MHz 16.934 Mhz 18.432 MHz 18.432 MHz 18.432 Mhz 256*fs 8.192 MHz 11.29 Mhz. 12.288 Mhz. 12.288 Mhz. 12.288 Mhz.
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June 2, 2000
AV2188 PIN ASSIGNMENT
SD1 SD2 SD3 SDOUT SC SF DGND DVDD DGND XCK SCL SDA TST RST 1 2 3 4 5 28 27 26 25 24 AR3 AL3 AR2 AL2 AR1 AL1 AGND CM2 AVDD CM1 AGND RIN LIN N/C
A V 2 1 8 8
6 7 8 9 10 11 12 13 14
23 22 21 20 19 18 17 16 15
PIN DESCRIPTION
Pin Name DIGITAL SD1.