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零件编号 | STA321 | ||
描述 | 4-channel digital audio system | ||
制造商 | STMicroelectronics | ||
LOGO | |||
1 Page
STA321
4-channel digital audio system with FFX™ driver
Features
High efficiency FFX™ class-D modulator
100-dB dynamic range
Two stereo channels with I2S input/output data
interface
16-bit stereo ADC input with PGA and
microphone biasing
Analog and digital muxing/mixing capability
4-channel input sample rate converter
(8 kHz to 192 kHz)
Four channels of 24-bit audio processing
Flexible channel mapping and routing
Output configurations:
– 2.0
– 2.1
– 4.0
– Mono
Embedded CMOS bridge: up to 0.5 W/channel
pfStart™ for pop-free single-ended operations
Play and record simultaneous operation
Pre and post mix stages
Individual channel and master gain/attenuation
LQFP-64 package
with exposed pad down (EPD)
Digital gain/attenuation -105 dB to +36 dB in
0.5-dB steps
Soft volume update and muting
DC-blocking selectable high-pass filter
Selectable de-emphasis filter
Up to 13 28-bit user programmable biquads
(EQ) per channel
Bass/treble tone control
Ternary, binary or phase shift modulation
PWM output
Headphone output with jack detector
I2C control.
Table 1. Device summary
Order code
Temperature range
STA321
0 to 70 °C
STA321TR
0 to 70 °C
Package
LQFP-64 EPD
LQFP-64 EPD
Packaging
Tray
Tape and reel
October 2009
Doc ID 15351 Rev 3
1/157
www.st.com
1
List of figures
STA321
Figure 49.
Figure 50.
Figure 51.
Figure 52.
Figure 53.
Figure 54.
Figure 55.
Figure 56.
PCM (delayed) serial format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Invalid input detection schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Headphone detection circuit for single-ended configuration . . . . . . . . . . . . . . . . . . . . . . . 73
Headphone detection circuit for binary HP configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 73
I2C write operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
I2C read operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Microless mode block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
LQFP-64L EPD outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
8/157
Doc ID 15351 Rev 3
Electrical specifications
STA321
Table 6. Electrical specifications (continued)
Symbol
Parameter
Test conditions
Min Typ Max Unit
ADC
IDDA
ISTDBYA
DR
SNRADC
THDADC
CT
Supply current in operating mode
AVDD supply current in standby
Dynamic range
Signal to noise ratio
Total harmonic distortion
Channel cross talk
- Group delay
- Pass band
- Pass band ripple
- Stop band attenuation
- Frequency response
- Linear phase deviation
- Pass-band ripple
Headphone detector threshold limits
E_HP1
HP low threshold
HP high threshold
E_HP2
HP low threshold
HP high threshold
VAVDD = 3.3V
-
VAVDD = 3.3V
-
1 kHz, A-weigthed
VAVDD = 3.3 V
-
1 kHz, A-weighted
VAVDD = 3.3 V
-
1 kHz, -1dB
VAVDD = 3.3 V
-
VAVDD = 3.3 V
-
Fs mode (fS = 32 kHz)
-
Fs_by_2 mode (fS = 16 kHz) -
Fs_by_4 mode (fS = 8 kHz) -
--
Fs mode (fS = 44.1 kHz)
Fs_by_2 mode
(fS = 22.05 kHz)
Fs_by_4 mode
(fS = 11.025 kHz)
Fs mode (fS = 44.1 kHz)
Fs_by_2 mode
(fS = 22.05 kHz)
Fs_by_4 mode
(fS = 11.025 kHz)
-3 dB
-
-
-
-
-
-
-
-0.08 dB
-
at 20 Hz
-
--
--
--
--
--
10 15
2-
90 -
92 -
85 -
80 -
0.4 -
0.7 -
1.4 -
0.4535 -
0.08 -
0.08 -
0.08 -
45 -
45 -
45 -
7
50
19.35
0.08
-
-
-
-
mA
µA
dB
dB
dB
dB
ms
Fs
dB
dB
Hz
Hz
deg
dB
2.34 -
2.52 -
0.7 -
0.9 -
V
V
16/157
Doc ID 15351 Rev 3
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页数 | 30 页 | ||
下载 | [ STA321.PDF 数据手册 ] |
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