參數(shù)資料
型號： AD1812JST
廠商： ANALOG DEVICES INC
元件分類： 消費家電
英文描述： Silver Mica Capacitor; Capacitance:12pF; Capacitance Tolerance: 5%; Series:CD17; Voltage Rating:500VDC; Capacitor Dielectric Material:Mica; Termination:Radial Leaded; Lead Pitch:5.9mm; Leaded Process Compatible:No RoHS Compliant: No
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP160
封裝： TQFP-160
文件頁數(shù)： 17/20頁
文件大?。?/td> 339K
代理商： AD1812JST
AD1812
REV. 0
–17–
SYSTEM TIMING AND CONTROL
If the AD1812 is not connected directly to the OSC clock on the
ISA bus, a single fundamental-mode and parallel-tuned
14.31818 MHz crystal oscillator can be substituted to derive all
timing parameters. Future feature enhanced, pin-compatible
versions of the SoundPort Controller will require a 33MHz
clock or crystal input. Analog Devices suggests developing board
layouts that can be easily modified to supply the new clock.
DATA AND CONTROL TRANSFERS
The embedded SoundPort Stereo Codec supports a DMA
request/grant architecture for transferring data with the host
computer bus. One or two 8-bit or 16-bit DMA channels can
be supported. Programmed I/O (PIO) mode is also supported
for control register accesses and for applications lacking DMA
control. PIO transfers can be made on one channel while the
other is performing DMA. Transfers to and from the AD1812
are asynchronous relative to the internal data conversion clock.
Transfers are buffered by FIFOs located in the capture and
playback paths.
REFERENCE DESIGNS AND DEVICE DRIVERS
Reference designs and device drivers using the AD1812 are
available via Bulletin Board Service. The Computer Products
Division runs a BBS that can be reached at speeds up to 14,400
baud, no parity, 8 bits data, 1 stop bit, by dialing (617) 461-
4258. The BBS supports: V.32bis, error correction (V.42 and
MNP classes 2, 3, and 4), and data compression (V.42bis and
MNP class 5). Reference designs can also be found in the
AD1812 SoundPort Controller Technical Reference which can
be obtained by contacting your local Analog Devices sales repre-
sentative or authorized distributor. You can also find us on the
World Wide Web at http://www.analog.com.
FREQUENCY RESPONSE PLOTS
SAMPLE FREQUENCY – F
S
10
–90
–120
0
1.0
0.1
d
0.2
0.4
0.5
0.6
0.7
0.8
0.9
0
–80
–100
–110
–50
–70
–40
–60
–20
–10
–30
0.3
Figure 8. Analog-to-Digital Frequency Response to F
S
(Full-Scale Line-Level Inputs, –1 dB Gain)
SAMPLE FREQUENCY – F
S
10
–90
–120
0.40
0.44
d
0.48
0.56
0.60
0.64
0.68 0.70
0
–80
–100
–110
–50
–70
–40
–60
–20
–10
–30
0.52
Figure 9. Analog-to-Digital Frequency Response —
Transition Band (Full-Scale Line-Level Inputs,
–1 dB Gain)
SAMPLE FREQUENCY – F
S
10
–90
–120
0
1.0
0.1
d
0.2
0.4
0.5
0.6
0.7
0.8
0.9
0
–80
–100
–110
–50
–70
–40
–60
–20
–10
–30
0.3
Figure 10. Digital-to-Analog Frequency Response to F
S
(Full-Scale Inputs, 0 dB Attenuation)
SAMPLE FREQUENCY – F
S
10
–90
–120
0.40
0.44
d
0.48
0.56
0.60
0.64
0.68 0.70
0
–80
–100
–110
–50
–70
–40
–60
–20
–10
–30
0.52
Figure 11. Digital-to-Analog Frequency Response —
Transition Band (Full-Scale Inputs, 0 dB Attenuation)
相關(guān)PDF資料
PDF描述
AD1812JS ECONOLINE: RD & RC - Dual Output from a Single Input Rail- 1kVDC & 2kVDC Isolation- Power Sharing on Output- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 86%
AD1812 SoundPort Controller(SoundPort控制器)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD1815 制造商:AD 制造商全稱:Analog Devices 功能描述:Sound Comm Controleer
AD1815JS 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述:
AD1816A 制造商:AD 制造商全稱:Analog Devices 功能描述:SoundPort Controller
AD1816AJS 制造商:AD 制造商全稱:Analog Devices 功能描述:SoundPort Controller
ad1816ajs-eeprom 制造商:Rochester Electronics LLC 功能描述:AD1816A SOUND PORT CONTRO - Bulk 制造商:Analog Devices 功能描述:
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