參數(shù)資料
型號(hào): PCA1070
廠商: NXP Semiconductors N.V.
英文描述: Multistandard programmable analog CMOS transmission IC
中文描述: 多標(biāo)準(zhǔn)傳輸可編程模擬CMOS集成電路
文件頁(yè)數(shù): 15/36頁(yè)
文件大?。?/td> 180K
代理商: PCA1070
1997 Jun 20
15
Philips Semiconductors
Product specification
Multistandard programmable analog
CMOS transmission IC
PCA1070
Sidetone balance impedance
Internal balance impedance Z
oss
to match the external line
impedance Z
line
to give optimum sidetone suppression.
Z
oss
= R
sa
+ (R
sb
// C
s
).
The optimum setting of R
sa
depends on the value of the set
impedance. To safeguard stable operation of the
anti-sidetone circuit under all practical conditions, the
following condition must be fulfilled: R
sa
0.5R
a
.
Table 14
Programming R
sa
Note
1.
Default value.
ZOSA3 ZOSA2 ZOSA1 ZOSA0
R
sa
(
)
134
153
193
221
246
277
295
341
369
443
492
(1)
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Table 15
Programming R
sb
Note
1.
Default value.
Table 16
Programming C
s
Note
1.
Default value.
ZOSB
R
sb
(
)
MSB
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
LSB
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
465
637
710
803
893
1003
1259
(1)
1410
1572
1773
1978
2216
ZOSP
C
s
(nf)
MSP
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
LSP
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
5
55
58
69
76
85
96
105
121
134
(1)
145
166
186
207
232
259
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