MAX2752EUA-T
更新时间：2024-09-18 18:56:44
品牌：MAXIM
描述：Voltage Controlled Oscillator, 2025MHz Min, 2165MHz Max
概述
规格参数
数据手册MAX2752EUA-T 概述
Voltage Controlled Oscillator, 2025MHz Min, 2165MHz Max 压控振荡器
MAX2752EUA-T 规格参数
| 是否无铅： | 含铅 | 是否Rohs认证： | 不符合 |
| 生命周期： | Obsolete | Reach Compliance Code： | not_compliant |
| 风险等级： | 5.27 | 最大控制电压： | 2.4 V |
| 最小控制电压： | 0.4 V | JESD-609代码： | e0 |
| 调制灵敏度： | 170 MHz/V | 安装特点： | SURFACE MOUNT |
| 偏移频率： | 4000 kHz | 最大工作频率： | 2165 MHz |
| 最小工作频率： | 2025 MHz | 最高工作温度： | 85 °C |
| 最低工作温度： | -40 °C | 振荡器类型： | VOLTAGE CONTROLLED OSCILLATOR |
| 输出功率： | -3 dBm | 相位噪声： | -125 dBc/Hz |
| 物理尺寸： | 3.05mm x 3.05mm x 1.1mm | 最大压摆率： | 15.2 mA |
| 标称供电电压： | 3 V | 表面贴装： | YES |
| 端子面层： | Tin/Lead (Sn85Pb15) | Base Number Matches： | 1 |
MAX2752EUA-T 数据手册
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PDF下载19-1825; Rev 0; 10/00
2.4GHz Monolithic
Voltage-Controlled Oscillators
General Description
Features
The MAX2750/MAX2751/MAX2752 are self-contained volt-
age-controlled oscillators (VCOs) intended for use in the
2.4GHz to 2.5GHz ISM band. Each IC combines a fully
integrated oscillator and output buffer in a miniature 8-pin
µMAX package.
ꢀ Guaranteed Frequency Tuning Range
MAX2750: 2400MHz to 2500MHz (Zero IF)
MAX2751: 2120MHz to 2260MHz
(240MHz to 280MHz IF)
MAX2752: 2025MHz to 2165MHz
(335MHz to 375MHz IF)
The inductor and varactor elements of the tank are inte-
grated on-chip, greatly simplifying application of the part.
The only required external components are a couple of
supply bypass capacitors. The IC provides direct connec-
tion to the VCO tuning voltage input and the VCO buffer
output. The tuning voltage input range is +0.4V to +2.4V,
and the oscillator frequency tuning range is factory adjust-
ed to provide guaranteed limits. The output signal is
buffered by an amplifier stage (internally matched to 50Ω)
to provide higher output power and isolate the device from
load impedance variations.
ꢀ On-Chip Tank Circuit
ꢀ Internally Matched Output Buffer Amplifier
ꢀ Low-Current Shutdown Mode
ꢀ +2.7V to +5.5V Supply Voltage Range
ꢀ Miniature 8-Pin µMAX Package
Ordering Information
The MAX2750/MAX2751/MAX2752 operate over a +2.7V
to +5.5V supply voltage range. Internal regulation of the
oscillator supply voltage eliminates the need for an exter-
nal LDO regulator for the VCO. The IC also provides a dig-
itally controlled shutdown mode to permit implementation
of sophisticated power-supply management. In shutdown,
the supply current is reduced to less than 1µA.
PART
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 µMAX
MAX2750EUA
MAX2751EUA
MAX2752EUA
8 µMAX
8 µMAX
Pin Configuration appears at end of data sheet.
________________________Applications
802.11b DSSS WLAN
802.11 FHSS WLAN
Home RF
2.4GHz Bluetooth ISM Proprietary Radio
Typical Operating Circuit
BYP
GND
OUT
TUNE
GND
OSCILLATOR
CORE
OUT TO MIXER/
SYNTHESIZER
TUNE
V
CC1
CC2
MAX2750
MAX2751
MAX2752
V
CC
V
SHDN
SHDN
BIAS
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
2.4GHz Monolithic
Voltage-Controlled Oscillators
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND..............................................................-0.3V to +6V
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
TUNE, SHDN, BYP, OUT to GND...............-0.3V to (V
+ 0.3V)
CC
Continuous Power Dissipation (T = +70°C)
A
8-Pin µMAX (derate 5.7mW/°C above T = +70°C).....457mW
A
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(V
are at V
= +2.7V to +5.5V, V
= +0.4V to +2.4V, V
≤ +2V, OUT = connected to 50Ω load, T = -40°C to +85°C. Typical values
SHDN A
CC
TUNE
= +3.0V, T = +25°C, unless otherwise noted.) (Note 1)
CC
A
PARAMETER
CONDITIONS
MIN
TYP
MAX
5.5
UNITS
Supply Voltage
Supply Current
2.7
V
T
T
T
T
T
T
= +25oC
= -40oC to +85oC
= +25oC
= -40oC to +85oC
= +25oC
= -40oC to +85oC
11.3
14.1
9.7
14.4
17.0
12.1
15.9
12.1
15.2
1
A
A
A
A
A
A
MAX2750
MAX2751
MAX2752
mA
12.7
10
12.8
0.2
Shutdown Supply Current
SHDN Input Voltage Low
SHDN Input Voltage High
SHDN Input Current Low
SHDN Input Current High
TUNE Input Current
µA
V
0.6
2.0
-2
V
V
V
≤ 0.6V
2
2
µA
µA
SHDN
SHDN
-2
≥ 2.0V
≤ 2.4V
0.4 ≤ V
0.02
nA
TUNE
AC ELECTRICAL CHARACTERISTICS
(MAX2750/MAX2751/MAX2752 EV kit, V
= +2.7V to +5.5V, V
= +0.4V to +2.4V, V
≤ +2V, OUT = connected to 50Ω load,
SHDN
CC
TUNE
T
= +25°C. Typical values are at V
= +3.0V, unless otherwise noted.)
A
CC
PARAMETER
CONDITIONS
MIN
2400
2120
2025
TYP
MAX
2500
2260
2165
UNITS
MHz
MAX2750
V
= +0.4V to +2.4V,
Oscillator Guaranteed
Frequency Limits (Note1)
TUNE
MAX2751
MAX2752
MHz
T
= -40oC to +85oC
A
MHz
f
= 4MHz
-125
-151
140
90
dBc/Hz
dBm/Hz
OFFSET
Phase Noise
Noise floor
f
f
f
f
f
f
= 2400MHz, +3V
OSC
OSC
OSC
OSC
OSC
OSC
MAX2750
MAX2751
MAX2752
= 2500MHz, +3V
= 2120MHz, +3V
= 2260MHz, +3V
= 2025MHz, +3V
= 2165MHz, +3V
175
110
170
105
-3
Tuning Gain (Note 2)
MHz/V
Output Power
Return Loss
Harmonics
dBm
dB
12
-30
dBc
2
_______________________________________________________________________________________
2.4GHz Monolithic
Voltage-Controlled Oscillators
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2750/MAX2751/MAX2752 EV kit, V
= +2.7V to +5.5V, V
= +0.4V to +2.4V, V
≤ +2V, OUT = connected to 50Ω load,
SHDN
CC
TUNE
T
= +25°C. Typical values are at V
= +3.0V, unless otherwise noted.)
A
CC
PARAMETER
CONDITIONS
MIN
TYP
4
MAX
UNITS
MHzp-p
MHz/V
µs
Load Pulling
VSWR = 2:1, all phases
stepped: +3.3V to +2.8V
V
Supply Pushing
1.3
8
CC
Oscillator Turn-On Time (Note 3)
Exiting shutdown
Entering shutdown
Oscillator Turn-Off Time (Note 4)
5
µs
Note 1: Specifications are production tested at T = +25°C. Limits over temperature are guaranteed by design and characterization.
A
Note 2: Tuning gain is measured at the oscillator’s guaranteed frequency limits.
Note 3: Turn-on time to within 3dB of final output power
Note 4: Turn-off time to output power of -10dBm.
Typical Operating Characteristics
(Circuit of Figure 1, V
= +3.0V, V
= +0.4V to +2.4V, V
≤ 2V, T = +25°C, unless otherwise noted.)
SHDN
A
CC
TUNE
MAX2750/MAX2751/MAX2752
TUNING CURRENT vs. TEMPERATURE
MAX2750/MAX2751/MAX2752
SUPPLY CURRENT vs. TEMPERATURE
MAX2750/MAX2751/MAX2752
SHUTDOWN CURRENT vs. TEMPERATURE
1.0
0.8
0.6
0.4
0.2
0
15
14
13
12
11
0.5
0.4
0.3
0.2
0.1
0
MAX2750
10
9
MAX2752
MAX2751
8
7
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
MAX2751
VCO TUNING CURVE
MAX2752
VCO TUNING CURVE
MAX2750
VCO TUNING CURVE
2600
2500
2400
2300
2200
2350
2250
2150
2050
1950
1850
2350
2250
2150
2050
1950
1850
T
= -40°C
A
T
= -40°C
A
T
= -40°C
A
T
= +25°C
A
T
= +25°C
A
T
= +25°C
A
T
= +85°C
A
T
= +85°C
A
T
= +85°C
A
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
V
(V)
V
(V)
V
(V)
TUNE
TUNE
TUNE
_______________________________________________________________________________________
3
2.4GHz Monolithic
Voltage-Controlled Oscillators
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
= +3.0V, V
= +0.4V to +2.4V, V
≤ 2V, T = +25°C, unless otherwise noted.)
A
CC
TUNE
SHDN
MAX2751
OUTPUT POWER vs. TEMPERATURE
NORMALIZED HARMONIC
OUTPUT SPECTRUM
PHASE NOISE
-50
-60
-70
-2
-3
-4
-5
∆ MKR
-30.00dB
∆ = 30dBc
-80
-90
∆ = 48dBc
-100
-110
-120
-130
-140
-150
ƒ
3ƒ
O
2ƒ
O
O
0.1
1
10
-40
-20
0
20
40
60
80
FREQUENCY
OFFSET FREQUENCY (MHz)
TEMPERATURE (°C)
OSCILLATOR TURN-ON TIME
OSCILLATOR TURN-ON TIME
0
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
4µs
8µs
0
2
4
6
8
10 12 14 16 18 20
0
2
4
6
8
10 12 14 16 18 20
TIME (µs)
TIME (µs)
Pin Description
PIN
NAME
FUNCTION
VCO Bypass. Bypass with a 0.1µF capacitor to GND.
1
BYP
Oscillator Frequency Tuning Voltage Input. High-impedance input with a voltage input range of +0.4V
(low frequency) to +2.4V (high frequency).
2
3
4
5
6
7
8
TUNE
GND
Ground Connection for Oscillator and Biasing. Requires a low-inductance connection to the circuit
board ground plane.
Shutdown Logic Input. A high-impedance input logic level low disables the device and reduces
supply current to less than 1.0µA. A logic level high enables the device.
SHDN
Bias and Oscillator DC Supply Voltage Connection. Bypass separately from PIN6 with a 220pF
capacitor to GND for low noise and low spurious content performance from the oscillator.
V
V
CC1
CC2
Output Buffer DC Supply Voltage Connection. Bypass separately from PIN5 with a 220pF capacitor to
GND for best high frequency performance.
Buffered Oscillator Output. Incorporates an internal DC blocking capacitor. OUT is internally matched
to 50Ω.
OUT
GND
Ground Connection for Output Buffer. Requires a low-inductance connection to the circuit board
ground plane.
4
_______________________________________________________________________________________
2.4GHz Monolithic
Voltage-Controlled Oscillators
BYP
MAX2750
MAX2751
MAX2752
0.1µF
GND
OSCILLATOR
CORE
TUNE
FROM
SYNTHESIZER
OUT TO MIXER/
SYNTHESIZER
OUT
LOOP FILTER
220pF
V
CC1
CC2
GND
V
CC
V
SHDN
BIAS
SHDN
220pF
Figure 1. Typical Application Circuit
Detailed Description
Applications Information
Oscillator
The MAX2750/MAX2751/MAX2752 VCOs are imple-
mented as an LC oscillator topology, integrating all of
the tank components on-chip. This fully monolithic
approach provides an extremely easy-to-use VCO,
equivalent to a VCO module. The frequency is con-
trolled by a voltage applied to the TUNE pin, which is
internally connected to the varactor. The VCO core
uses a differential topology to provide a stable frequen-
cy versus supply voltage and improve the immunity to
load variations. In addition, there is a buffer amplifier
following the oscillator core to provide added isolation
from load variations and to boost the output power.
Tune Input
The tuning input is typically connected to the output of
the PLL loop filter. The loop filter provides an appropri-
ately low-impedance source. The input may incorporate
an extra RC filter stage to reduce high-frequency noise
and spurious signals. Any excess noise on the tuning
input is directly translated into FM noise, which can
degrade the phase-noise performance of the oscillator.
Therefore, it is important to minimize the noise intro-
duced on the tuning input. A simple RC filter with low
corner frequency is needed during testing in order to
filter the noise present on the voltage source driving the
tuning line.
Output Buffer
The oscillator signal from the core drives an output
buffer amplifier. The amplifier is internally matched to
50Ω including an on-chip DC blocking capacitor. No
external DC blocking capacitor is required, eliminating
the need for any external components. The output
Layout Issues
Always use controlled impedance lines (microstrip,
coplanar waveguide, etc.) for high-frequency signals.
Always place decoupling capacitors as close to the
V
pins as possible; for long V
lines, it may be nec-
CC
CC
essary to add additional decoupling capacitors located
further from the device. Always provide a low-induc-
tance path to ground, and keep GND vias as close to
the device as possible. Thermal reliefs on GND pads
are not recommended.
amplifier has its own V
and GND pins to minimize
CC
load-pulling effects. The amplifier boosts the oscillator
signal to a level suitable for driving most RF mixers.
_______________________________________________________________________________________
5
2.4GHz Monolithic
Voltage-Controlled Oscillators
Pin Configuration
Chip Information
TRANSISTOR COUNT: 176
PROCESS: BiPOLAR
TOP VIEW
BYP
TUNE
GND
1
2
3
4
8
7
6
5
GND
OUT
MAX2750
MAX2751
MAX2752
V
V
CC2
SHDN
CC1
µMAX
Package Information
6
_______________________________________________________________________________________
MAX2752EUA-T CAD模型
引脚图
封装焊盘图
MAX2752EUA-T 相关器件
| 型号 | 制造商 | 描述 | 价格 | 文档 |
| MAX2752EVKIT | MAXIM | Evaluation Kit for the MAX2750/MAX2751/MAX2752 | 获取价格 |
|
| MAX2753 | MAXIM | 2.4GHz Monolithic Voltage-Controlled Oscillator with Differential Outputs | 获取价格 |
|
| MAX2753EUA | MAXIM | 2.4GHz Monolithic Voltage-Controlled Oscillator with Differential Outputs | 获取价格 |
|
| MAX2753EUA+ | MAXIM | Voltage Controlled Oscillator, 2400MHz Min, 2500MHz Max | 获取价格 |
|
| MAX2753EUA+T | MAXIM | 暂无描述 | 获取价格 |
|
| MAX2753EVKIT | MAXIM | High-Speed.Low-Voltage.CMOS Analog Multiplexers/Switches[MAX4617/MAX4618/MAX4619/MAX4617CEE/MAX4617CEE-T/MAX4617CPE/MAX4617CSE/MAX4617CSE-T/MAX4617CUE/MAX4617CUE-T/MAX4617EEE/MAX4617EEE-T/MAX4617EPE/MAX4617ESE/MAX4617ESE-T/MAX4617EUE/MAX4617EUE-T/MAX4618CEE/MAX4618CEE-T/MAX4618CPE/MAX4618CSE/MAX4618CSE-T/MAX4618CUE/MAX4618CUE-T/MAX4618EEE/MAX4618EEE-T/MAX4618EPE/MAX4618ESE/MAX4618ESE-T/MAX4618EUE/MAX4618EUE-T/MAX4619CEE/MAX4619CEE-T/MAX4619CPE/MAX4619CSE/MAX4619CSE-T/MAX4619CUE/MAX4619CUE-T/MAX4619EEE/MAX4619EEE-T/MAX4619EPE/MAX4619ESE/MAX4619ESE-T/MAX4619EUE/MAX4619EUE-T ] | 获取价格 |
|
| MAX2753_1 | MAXIM | Evaluation Kit | 获取价格 |
|
| MAX2754 | MAXIM | 1.2GHz VCO with Linear Modulation Input | 获取价格 |
|
| MAX2754 | ADI | 1.2GHz VCO，带有线性调制输入 | 获取价格 |
|
| MAX2754EUA | MAXIM | 1.2GHz VCO with Linear Modulation Input | 获取价格 |
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