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參數(shù)資料
| 型號： | MAX2106UCM |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 衰減器 |
| 英文描述： | DBS Direct Downconverter |
| 中文描述： | RF/MICROWAVE DOWN CONVERTER |
| 封裝： | 7 X 7 MM, 1 MM HEIGHT, MS-026ABA-HD, TQFP-48 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 182K |
| 代理商： | MAX2106UCM |
M
DBS Direct Downconverter
6
_______________________________________________________________________________________
NAME
FUNCTION
PIN
Pin Description
2
3
4
CFLT
XTL-
XTL+
External Bypass for Internal Bias. Bypass this pin with a 0.1
μ
F ceramic chip capacitor to GND.
Inverting Input to Crystal Oscillator. Consult crystal manufacturer for circuit loading requirements.
Noninverting Input to Crystal Oscillator. Consult crystal manufacturer for circuit loading requirements.
5, 9, 10, 16,
40, 41, 46
GND
Ground. Connect each of these pins to a solid ground plane. Use multiple vias to reduce inductance
where possible.
7
8
11
12
13
14
RFIN-
RFIN+
QDC-
QDC+
IDC-
IDC+
RF Inverting Input. Bypass RFIN- with 47pF capacitor in series with a 75
resistor to GND.
RF Noninverting Input. Connect to 75
source with a 47pF ceramic chip capacitor.
Baseband Offset Correction. Connect a 0.22μF ceramic chip capacitor from QDC- to QDC+ (pin 12).
Baseband Offset Correction. Connect a 0.22μF ceramic chip capacitor from QDC+ to QDC- (pin 11).
Baseband Offset Correction. Connect a 0.22μF ceramic chip capacitor from IDC- to IDC+ (pin 14).
Baseband Offset Correction. Connect a 0.22μF ceramic chip capacitor from IDC+ to IDC- (pin 13).
17
RFOUT
Buffered RF Output. Enabled when INSEL is low.
18
CPG1
Charge-Pump Gain Select. High-impedance digital input. Sets the charge-pump output scaling. See
DC Electrical Characteristics
for available gain settings.
20
XTLOUT
Buffered Crystal Oscillator Output
21
CPG2
Charge-Pump Gain Select. High-impedance digital input. Sets the charge-pump output scaling. See
DC Electrical Characteristics
for available gain settings.
22
GC1
Gain Control Input for RF Front End. High-impedance analog input, with an input range of +1V to +4V.
See
AC Electrical Characteristics
for transfer function.
23
GC2
Gain Control Input for Baseband Signals. High-impedance analog input, with an input range of +1V to
+4V. See
AC Electrical Characteristics
for transfer function.
24
INSEL
Loopthrough Mode Enable. High-impedance digital input. Drive low to enable the RFOUT buffer and
disable the LO converters. Drive high for normal tuner operation.
25
FLCLK
Baseband Filter Cutoff Adjust. Connect to a slew-rate-limited clock source. See
AC Electrical
Characteristics
for transfer function.
26
RFBAND
RF Input Band Select Input. Drive high to enable 1680 MHz to 2175 MHz band. Leave unconnected to
enable 1180 MHz to 1680 MHz band. Connect to GND to enable 925 MHz to 1180 MHz band.
27
28
30
31
QOUT-
QOUT+
IOUT-
IOUT+
Baseband Quadrature Output. Connect to inverting input of high-speed ADC.
Baseband Quadrature Output. Connect to noninverting input of high-speed ADC.
Baseband In-Phase Output. Connect to inverting input of high-speed ADC.
Baseband In-Phase Output. Connect to noninverting input of high-speed ADC.
32
LODIVSEL
LO Buffer Divider Ratio Input. Drive high to enable divide-by-one LO buffer output. Connect to GND to
enable divide-by-two buffer output.
1, 6, 19,
29, 39, 45
V
CC
V
CC
Power-Supply Input. Connect each pin to a +5V ±5% low-noise supply. Bypass each V
CC
pin to
the nearest GND with a ceramic chip capacitor.
15
LOBUFSEL
Local Oscillator Buffer Select. Connect to GND to select DIV32/33 prescaler output; connect V
CC
to
DIV1 to select DIV2 LO buffer output.
33
MOD+
PECL Modulus Control. A PECL high on MOD+ sets the dual-modulus prescaler to divide by 32. A PECL
logic low sets the divide ratio to 33. Drive with a differential PECL signal in conjunction with MOD- (pin 34).
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相關(guān)代理商/技術(shù)參數(shù) |
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| MAX2106UCM+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:DBS Direct Downconverter |
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