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MAX2753EUA

VCXO Oscillators

器件类别：无源元件    振荡器   

厂商名称：Maxim(美信半导体)

厂商官网：https://www.maximintegrated.com/en.html

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器件参数
参数名称
属性值
是否无铅
含铅
是否Rohs认证
不符合
厂商名称
Maxim(美信半导体)
包装说明
TSSOP8,.19
Reach Compliance Code
not_compliant
ECCN代码
EAR99
其他特性
DIFFERENTIAL OUTPUT
最大控制电压
2.4 V
最小控制电压
0.4 V
JESD-609代码
e0
制造商序列号
MAX2753
调制灵敏度
150 MHz/V
安装特点
SURFACE MOUNT
端子数量
8
偏移频率
4000 kHz
最大工作频率
2500 MHz
最小工作频率
2400 MHz
标称工作频率
2500 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
-8 dBm
封装主体材料
PLASTIC/EPOXY
封装等效代码
TSSOP8,.19
相位噪声
-130 dBc/Hz
物理尺寸
3.05mm x 3.05mm x 1.1mm
电源
3/5 V
认证状态
Not Qualified
最大压摆率
13.5 mA
标称供电电压
3 V
表面贴装
YES
技术
BIPOLAR
端子面层
Tin/Lead (Sn85Pb15)
文档预览
19-1913; Rev 0; 1/01
ANUAL
N KIT M EET
ATIO
SH
EVALU
S DATA
OLLOW
F
2.4GHz Monolithic Voltage-Controlled
Oscillator with Differential Outputs
Features
o
Guaranteed Frequency Tuning Range: 2400MHz
to 2500MHz
o
Compatible with Low-IF or Zero-IF Radio
Architectures
o
Differential Outputs
o
On-Chip Tank Circuit
o
Internally Matched Output Buffer Amplifier
o
1µA Shutdown Mode
o
+2.7V to +5.5V Supply Voltage Range
o
Miniature 8-Pin µMAX Package
General Description
The MAX2753 is a self-contained voltage-controlled oscil-
lator (VCO) intended for use in 2.4GHz radios that utilize a
low-IF or zero-IF architecture. It combines a fully integrat-
ed oscillator and output buffer in a miniature 8-pin µMAX
package.
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 MAX2753 provides direct
connection 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
adjusted 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. In addition, the MAX2753 pro-
vides differential outputs.
The MAX2753 operates over a +2.7V to +5.5V supply volt-
age range. Internal regulation of the oscillator supply volt-
age eliminates the need for an external LDO regulator for
the VCO. The MAX2753 also provides a digitally controlled
shutdown mode to permit implementation of sophisticated
power-supply management. In shutdown, the supply cur-
rent is reduced to less than 1µA.
MAX2753
Ordering Information
PART
MAX2753EUA
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
8
µMAX
Pin Configuration
TOP VIEW
BYP
1
8
7
GND
OUTN
V
CC
OUTP
TUNE
2
________________________Applications
802.11 FHSS WLAN
Home RF
2.4GHz Bluetooth ISM Proprietary Radio
MAX2753
GND
3
6
5
SHDN
4
µMAX
Typical Operating Circuit
BYP
GND
TUNE
TUNE
OSCILLATOR
CORE
OUTN
OUT TO MIXER/
SYNTHESIZER
GND
V
CC
V
CC
MAX2753
SHDN
OUTP
BIAS
OUT TO MIXER/
SYNTHESIZER
SHDN
________________________________________________________________
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
Oscillator with Differential Outputs
MAX2753
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND ..............................................................-0.3V to +6V
TUNE,
SHDN,
BYP,
OUTP, OUTN to GND .................................-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 5.7mW/°C above T
A
= +70°C).....457mW
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
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
CC
= +2.7V to +5.5V, V
TUNE
= +0.4V to +2.4V, V
SHDN
≥
+2V, OUTP = OUTN = connected to 50Ω load, T
A
= -40°C to +85°C.
Typical values are at V
CC
= +3.0V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Supply Current
Shutdown Supply Current
SHDN
Input Voltage Low
SHDN
Input Voltage High
SHDN
Input Current Low
SHDN
Input Current High
TUNE Input Current
V
SHDN
≤
0.6V
V
SHDN
≥
2.0V
0.4V
≤
V
TUNE
≤
2.4V
2.0
-1
-2
0.02
1
2
T
A
= +25 C
T
A
= -40
o
C to +85
o
C
V
SHDN
≤
0.6V
0.2
o
CONDITIONS
MIN
2.7
TYP
8.6
MAX
5.5
13.0
13.5
1
0.6
UNITS
V
mA
µA
V
V
µA
µA
nA
AC ELECTRICAL CHARACTERISTICS
(MAX2753 EV kit, V
CC
= +2.7V to +5.5V, V
TUNE
= +0.4V to +2.4V, V
SHDN
≥
+2V, OUTP = OUTN = connected to 50Ω load,
T
A
= +25°C. Typical values are at V
CC
= +3.0V, unless otherwise noted.)
PARAMETER
Oscillator Guaranteed
Frequency Limits (Note1)
Phase Noise
Tuning Gain (Note 2)
Differential Output Power
Return Loss
Harmonics
Load Pulling
Supply Pushing
Oscillator Turn-On Time (Note 3)
Oscillator Turn-Off Time (Note 4)
Pins OUTP or OUTN
Differential output
VSWR = 2:1, all phases, pins OUTP or OUTN
V
CC
stepped: +3.3V to +2.8V
Exiting shutdown
Entering shutdown
CONDITIONS
V
TUNE
= +0.4V to +2.4V, T
A
= -40
o
C to +85
o
C
f
OFFSET
= 4MHz
Noise floor
f
OSC
= 2400MHz
f
OSC
= 2500MHz
MIN
2400
-130
-153
150
110
-8
11
-26
3.4
1.1
10
8
TYP
MAX
2500
UNITS
MHz
dBc/Hz
dBm/Hz
MHz/V
dBm
dB
dBc
MHzp-p
MHz/V
µs
µs
Note 1:
Note 2:
Note 3:
Note 4:
2
Specifications are production tested at T
A
= +25°C. Limits over temperature are guaranteed by design and characterization.
Tuning gain is measured at the oscillator’s guaranteed frequency limits.
Turn-on time to within 3dB of final output power
Turn-off time to output power of -15dBm.
_______________________________________________________________________________________
2.4GHz Monolithic Voltage-Controlled
Oscillator with Differential Outputs
Typical Operating Characteristics
(MAX2753 EV kit, V
CC
= +3.0V, V
TUNE
= +0.4V to +2.4V, V
SHDN
≥
+2V, T
A
= +25°C, unless otherwise noted.)
MAX2753
SUPPLY CURRENT vs. TEMPERATURE
MAX2753 toc01
TUNING CURRENT vs. TEMPERATURE
MAX2753 toc02
VCO TUNING CURVE
T
A
= -40°C
T
A
= +25°C
MAX2753 toc03
13
12
SUPPLY CURRENT (mA)
11
10
9
8
7
6
5
4
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
0.5
2700
2600
FREQUENCY (MHz)
2500
2400
T
A
= +85°C
2300
2200
2100
TUNE INPUT CURRENT (nA)
0.4
0.3
0.2
0.1
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
0.0
0.5
1.0
1.5
V
TUNE
(V)
2.0
2.5
3.0
PHASE NOISE
MAX2753 toc04
OUTPUT POWER vs. FREQUENCY
-5.5
-6.0
OUTPUT POWER (dBm)
-6.5
-7.0
-7.5
-8.0
-8.5
-9.0
-9.5
-10.0
-10.0
2400
2420
2440
2460
2480
2500
-40
MAX2753 toc05
OUTPUT POWER vs. TEMPERATURE
MAX2753 toc06
-60
-70
-80
PHASE NOISE (dBc/Hz)
-90
-100
-110
-120
-130
-140
-150
0.1
1
OFFSET FREQUENCY (MHz)
-5.0
-6.0
OUTPUT POWER (dBm)
-7.0
-8.0
-9.0
10
-20
0
20
40
60
80
FREQUENCY (MHz)
TEMPERATURE (°C)
NORMALIZED HARMONIC
OUTPUT SPECTRUM
MAX2753 toc09
OSCILLATOR TURN-ON TIME
MAX2753 toc08
OSCILLATOR TURN-OFF TIME
-10
-20
OUTPUT POWER (dBm)
-30
-40
-50
-60
-70
-80
-90
-100
7µs
MAX2753 toc09
0
-10
-20
OUTPUT POWER (dBm)
-30
-40
-50
-60
-70
-80
-90
-100
8µs
0
OUTPUT POWER (dBm)
∆
= 30dBc
∆
= 27dBc
ƒ
O
2ƒ
O
FREQUENCY
3ƒ
O
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)
_______________________________________________________________________________________
3
2.4GHz Monolithic Voltage-Controlled
Oscillator with Differential Outputs
MAX2753
Pin Description
PIN
1
2
3
4
5
6
7
8
NAME
BYP
TUNE
GND
SHDN
OUTP
V
CC
OUTN
GND
FUNCTION
VCO Bypass. Bypass with a 0.1µF capacitor to GND.
Oscillator Frequency Tuning Voltage Input. High-impedance input with a voltage input range of +0.4V
(low frequency) to +2.4V (high frequency).
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.
Positive Buffered Oscillator Output. Incorporates an internal DC blocking capacitor. OUTP is internally
matched to 50Ω.
DC Supply Voltage Connection. Bypass with a 220pF capacitor to GND for best high frequency
performance.
Negative Buffered Oscillator Output. Incorporates an internal DC blocking capacitor. OUTN is
internally matched to 50Ω.
Ground Connection for Output Buffer. Requires a low-inductance connection to the circuit board
ground plane.
Detailed Description
Oscillator
The MAX2753 VCO is implemented 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 mod-
ule. The frequency is controlled by a voltage applied to
the TUNE pin, which is internally connected to the var-
actor. The VCO core uses a differential topology to pro-
vide a stable frequency versus supply voltage and
improve the immunity to load variations. In addition,
there is a differential buffer amplifier following the oscil-
lator core to provide added isolation from load varia-
tions and to boost the output power.
Applications Information
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 to filter the
noise present on the voltage source driving the tuning
line.
Output Buffer
The oscillator signal from the core drives a differential
output buffer amplifier. Each of the two amplifier out-
puts 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 amplifier boosts the oscillator
signal to a level suitable for driving most RF mixers.
Layout Issues
Always use controlled impedance lines (microstrip,
coplanar waveguide, etc.) for high-frequency signals.
Always place decoupling capacitors as close to the
V
CC
pins as possible; for long V
CC
lines, it may be nec-
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.
4
_______________________________________________________________________________________
2.4GHz Monolithic Voltage-Controlled
Oscillator with Differential Outputs
MAX2753
BYP
0.1µF
GND
FROM
SYNTHESIZER
LOOP FILTER
TUNE
OSCILLATOR
CORE
OUTN
OUT TO MIXER/
SYNTHESIZER
GND
V
CC
V
CC
220pF
OUTP
BIAS
OUT TO MIXER/
SYNTHESIZER
MAX2753
SHDN
SHDN
Figure 1. Typical Application Circuit
Chip Information
TRANSISTOR COUNT: 176
PROCESS: BiPOLAR
_______________________________________________________________________________________
5
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参数对比
与MAX2753EUA相近的元器件有：MAX2753EUA-、MAX2753EUA-T、MAX2753EUA+T。描述及对比如下：
型号 MAX2753EUA MAX2753EUA- MAX2753EUA-T MAX2753EUA+T
描述 VCXO Oscillators VCXO Oscillators RF and RFID RF Wireless Misc RF Wireless Misc RF and RFID
是否Rohs认证 不符合 - 不符合 符合
厂商名称 Maxim(美信半导体) - Maxim(美信半导体) Maxim(美信半导体)
Reach Compliance Code not_compliant - not_compliant compliant
其他特性 DIFFERENTIAL OUTPUT - DIFFERENTIAL OUTPUT DIFFERENTIAL OUTPUT
最大控制电压 2.4 V - 2.4 V 2.4 V
最小控制电压 0.4 V - 0.4 V 0.4 V
JESD-609代码 e0 - e0 e3
调制灵敏度 150 MHz/V - 150 MHz/V 150 MHz/V
安装特点 SURFACE MOUNT - SURFACE MOUNT SURFACE MOUNT
偏移频率 4000 kHz - 4000 kHz 4000 kHz
最大工作频率 2500 MHz - 2500 MHz 2500 MHz
最小工作频率 2400 MHz - 2400 MHz 2400 MHz
最高工作温度 85 °C - 85 °C 85 °C
最低工作温度 -40 °C - -40 °C -40 °C
振荡器类型 VOLTAGE CONTROLLED OSCILLATOR - VOLTAGE CONTROLLED OSCILLATOR VOLTAGE CONTROLLED OSCILLATOR
输出功率 -8 dBm - -8 dBm -8 dBm
相位噪声 -130 dBc/Hz - -130 dBc/Hz -130 dBc/Hz
物理尺寸 3.05mm x 3.05mm x 1.1mm - 3.05mm x 3.05mm x 1.1mm 3.05mm x 3.05mm x 1.1mm
最大压摆率 13.5 mA - 13.5 mA 13.5 mA
标称供电电压 3 V - 3 V 3 V
表面贴装 YES - YES YES
端子面层 Tin/Lead (Sn85Pb15) - Tin/Lead (Sn85Pb15) Matte Tin (Sn)
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器件捷径:
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ
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