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參數(shù)資料
| 型號(hào)： | UAA3515AHL |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | 900 MHz analog cordless telephone IC |
| 中文描述： | TELECOM, CORDLESS, RF AND BASEBAND CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 X 1.40 MM, PLASTIC, LQFP-64 |
| 文件頁(yè)數(shù)： | 26/44頁(yè) |
| 文件大?。?/td> | 180K |
| 代理商： | UAA3515AHL |
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2001 Dec 12
26
Philips Semiconductors
Product specification
900 MHz analog cordless telephone IC
UAA3515A
7.9.10
V
OLUME CONTROL
The register VCTL enables the volume control of the earpiece amplifier to be set to a predefined gain. This is achieved
by switched feedback resistor R
int
. The optional resistor R
ext
, connected between pins EARI and EARO provides the
hardware control.
Table 15
Volume control bit selection
7.9.11
C
RYSTAL TUNING CAPACITORS
On-chipcrystalreferencetuningisprovidedtocompensateforfrequencyspreadoverprocessandtemperaturechanges.
An external capacitor should be connected at pin XTALI; the value of the capacitor should be approximately 3 pF less
than the capacitance of pin XTALO. Internally, a programmable capacitance is available in parallel with the XTALI pin.
Tuning capacitance values are in the range 0 to 4.5 pF; see Table 16.
Table 16
Xtal tuning cap register
BIT 1
BIT 0
R
int
(k
)
14
24
41
70.2
70.2
70.2
70.2
R
ext
(k
)
none
none
none
none
100
33
15
G
EAR
(dB)
0
4.7
9.3
14
9.4
4.1
1
0
0
1
1
1
1
1
0
1
0
1
1
1
1
BIT 3
BIT 2
BIT 1
BIT 0
SELECT
CAPACITANCE (pF)
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
0
1
2
3
4
5
6
7
8
9
0.2
0.5
0.8
1.1
1.4
1.7
2.0
2.3
2.6
2.9
3.2
3.5
3.8
4.1
4.4
4.7
10
11
12
13
14
15
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