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參數(shù)資料
| 型號(hào)： | RF2689 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | W-CDMA/GSM/DCS RECEIVE AGC AND DEMODULATOR |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC20 |
| 封裝： | 4 X 4 MM, LCC-20 |
| 文件頁(yè)數(shù)： | 6/20頁(yè) |
| 文件大小： | 383K |
| 代理商： | RF2689 |
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Preliminary
7-44
RF2689
Rev A4 010815
7
Q
D
Pin
1
Function
VGC1
Description
Analog gain control. Valid control voltage ranges are form 0.5V to 2.5V.
These voltages are valid with a 10k
resistor in series with GC pin.
GSM IF balanced input. Input internally DC-biased.
Interface Schematic
2
3
4
GSM IN+
GSM IN-
W-CDMA
IN+
Same as pin 2.
W-CDMA IF balanced input. Input internally DC-biased.
5
W-CDMA
IN-
VCC
MODE A
LO
MODE B
Same as pin 4.
See pin 4.
6
7
8
9
Supply
DCS/GSM/GSM RX/W-CDMA mode selection.
LO input pin. Input internally DC-biased.
Warm-up mode enable. The input LO buffers and divider chains are
enabled.
Chip enable.
10
11
12
EN RX
Q OUT-
Q OUT+
Complementary output to Q OUT+.
Balanced baseband output.
13
14
I OUT-
I OUT+
Complementary output to I OUT+.
Balanced baseband output.
15
16
CALEN
FCLK
Calibration enable.
F
CLK
clock reference for the automatic calibration circuitry.
17
18
19
20
Pkg
Base
IF-
IF+
Complementary output to IF+.
IF test point output.
VREF2V
VGC2
Die
Flag
2V voltage reference decouple.
Gain control decouple.
Ground.
1200
1200
W-CDMA IN+
BIAS
BIAS
W-CDMA IN-
150
μ
A
Q OUT-
Q OUT+
V
CC
V
CC
150
μ
A
150
μ
A
I OUT-
I OUT+
150
μ
A
V
CC
V
CC
20 k
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