參數(shù)資料
型號(hào)： 0W888-002-XTP
廠商： ON SEMICONDUCTOR
元件分類： 數(shù)字信號(hào)處理
英文描述： BelaSigna 250 - 16 bit Audio Processor, Full Stereo 2-in, 2-out; Package: LFBGA 64, 7x7; No of Pins: 64; Container: Tape and Reel; Qty per Container: 1500
中文描述： 0-BIT, 50 MHz, MIXED DSP, PBGA64
封裝： 7 X 7 MM, GREEN, LFBGA-64
文件頁(yè)數(shù)： 32/34頁(yè)
文件大?。?/td> 935K
代理商： 0W888-002-XTP
Rev. 7 | Page 7 of 34 | www.onsemi.com
BelaSigna 250
F2
RCVR0-
Digital output 0 negative output
O
A
E2
AO0/RCVR1+
Analog output 0/ Digital output 1 positive output
O
A
F1
AD1/RCVR1-
Analog output 1/ Digital output 1 negative output
O
A
E1
AOR
Analog output reference
N/A
A
F7
DEBUG_RX
RS-232 serial input
I
D
E7
DEBUG_TX
RS-232 serial output
O
D
D7
EXT_CLK
External clock input/ Internal clock output
I/O
D
A3
SPI_CLK
SPI clock
O
D
C4
SPI_CS
SPI chip select
O
D
B4
SPI_SERO
SPI serial output
O
D
A4
SPI_SERI
SPI serial input
I
D
D8
TWSS_CLK
Two wire synchronous serial clock
I/O
D
E8
TWSS_DATA
Two wire synchronous serial data
I/O
D
F5
GPIO[0]/I2S_FD
General purpose input or output/ I2S digital frame
I/O
D
E5
GPIO[1]/I2S_IND
General purpose input or output/ I2S digital input
I/O
D
D5
GPIO[2]/I2S_INA
General purpose input or output/ I2S analog input
I/O
D
F4
GPIO[3]/NCLK_DIV_RESET/I2S_FA
General purpose input or output/ I2S analog frame
I/O
D
A5
GPIO[4]/LSAD[0]/I2S_OUTD
General purpose input or output/ low-speed A/D input/ I2S digital output
I/O
A/D
B5
GPIO[5]/LSAD[1]/I2S_OUTA
General purpose input or output/ low-speed A/D output/ I2S analog output
I/O
A/D
C5
GPIO[6]/LSAD[2]
General purpose input or output/ low-speed A/D input
I/O
A/D
A7
GPIO[7]/LSAD[3]
General purpose input or output/ low-speed A/D input
I/O
A/D
B6
GPIO[8]/LSAD[4]/UART_TX
General purpose input or output/ low-speed A/D input/ UART input
I/O
A/D
A8
GPIO[9]/LSAD[5]/UART_RX
General purpose input or output/ low-speed A/D input/ UART output
I/O
A/D
B7
GPIO[10]/UCLK
General purpose input or output/ user clock
I/O
D
B8
GPIO[11]/PCM_CLK
General purpose input or output/ PCM clock
I/O
D
C6
GPIO[12]/PCM_SERI
General purpose input or output/ PCM serial input
I/O
D
C7
GPIO[13]/PCM_SERO
General purpose input or output/ PCM serial output
I/O
D
C8
GPIO[14]/PCM_FRAME
General purpose input or output/ PCM frame
I/O
D
D6
GPIO[15]
General purpose input or output
I/O
D
F8
RESERVED
N/A
Recommended Design Guidelines
The small size of the BelaSigna 250 WLCSP package coupled with its superior audio performance and low cost makes it a preferred
package for portable audio devices.
BelaSigna 250 is designed to allow both digital and analog processing in a single system. Due to the mixed-signal nature of this
system, the careful design of the printed circuit board (PCB) layout is critical to maintain the high audio fidelity of BelaSigna 250. To
avoid coupling noise into the audio signal path, keep the digital traces away from the analog traces. To avoid electrical feedback
coupling, isolate the input traces from the output traces.
In order to achieve the highest level of miniaturization, the CSP package is constrained in ways that will factor into design decisions.
The CSP will only operate in HV mode, and therefore requires a 1.8V operating voltage. The number of pins is reduced to 48
(compared to 51 active pins on the LFBGA). This reduction eliminates access to GNDO (connected to GNDC) and AI_RC (connected
to AGND).
For PCB manufacture with BelaSigna 250 WLCSP, ON Semiconductor recommends Solder-on-Pad (SoP) surface finish. With SoP, the
solder mask opening should be solder mask-defined and copper pad geometry will be dictated by the PCB vendor’s design
requirements. [Most literature I have researched recommends non solder mask defined pads]
Alternative surface finishes are ENiG and OSP; volume of screened solder paste (#5) should be less than 0.0008mm
3. If no pre-
screening of solder paste is used, then following conditions must be met:
(i) the solder mask opening should be >0.3mm in diameter,
(ii) the copper pad will have 0.25mm diameter, and
(iii) soldermask thickness should be less than 1mil thick above the copper surface.
ON Semiconductor can provide BelaSigna 250 WLCSP land pattern CAD files to assist your PCB design upon request.
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