參數(shù)資料
型號(hào)： T6B70BFNG
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO16
封裝： 0.225 INCH, 0.65 MM PITCH, PLASTIC, SSOP-16
文件頁(yè)數(shù)： 15/21頁(yè)
文件大?。?/td> 367K
代理商： T6B70BFNG
T6B70BFNG
2008-05-15
3
Functions
1. Pseudo sine wave generator and 4-bit D/A converters (transmission block)
The pseudo sine wave signal with Fosc/16 frequency is output from the pseudo sine wave output pins
(SOUT
+ and SOUT).
The output polarity of SOUT
+ and SOUT are the opposite.
The transmission block (pseudo sine wave generator and 4-bit D/A converter are as shown below (SOUT
+
pin side):
The data of the pseudo sine wave generator is output in the following sequence:
0
→ 1 → 3 → 6 → 9 → C → E → F → F → E → C → 9 → 6 → 3 → 1 → 0 (hexadecimal)
Therefore, when there is no load, the pseudo sine waveform of the positive and negative output is like a
staircase (as illustrated above).
An analog switch is built-in so that the driver output buffer connects to the transmission line only during
transmission.
However, an emitter follower circuit is externally connected to the driver output buffer.
The phase difference between the positive and negative output is within 180°
± 5° (to account for fluctuation
in the pseudo sine wave output phase).
Pseudo
sine
wave
generat
or
R
MSB
R
LSB
R
2R
SOUT
+ pin
VSS
FOSC
RST
SOUT
+
SOUT
F F
E
C
9
6
3
1
0
250 kHz
FSIN
@FOSC = 4 MHz
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