Datasheet

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]
POWER CONDITIONING - SMT
15
HMC1060LP3E
v00.1211
QUAD LOW NOISE HIGH PSRR
LINEAR VOLTAGE REGULATOR
-145
-142.5
-140
-137.5
-135
-132.5
-130
1500 1750 2000 2250 2500 2750 3000
PTAT ON
PTAT OFF
PHASE NOISE AT 1 MHz OFFSET (dBc/Hz)
HMC830LP6GE OUTPUT FREQUENCY (MHz)
1
2
3
4
5
6
7
1500 1750 2000 2250 2500 2750 3000
PTAT ON
PTAT OFF
HMC830LP6GE OUTPUT POWER (dBm)
OUTPUT FREQUENCY (MHz)
Figure 20. HMC830LP6GE Phase Noise improvement
observed as a result of enabling HMC1060LP3E’s PTAT
Mode.
[6]
Figure 21.
HMC830LP6GE Output Power improvement
observed as a result of enabling HMC1060LP3E’s PTAT
Mode.
[6]
In some cases, application circuit performance can be enhanced at high temperatures by increasing the input supply
voltage as the temperature increases. The HMC1060LP3E offers a PTAT option that has been designed to improve
the performance of Hittite’s PLLs with Integrated VCOs. It is also potentially useful in many other applications, but the
user needs to verify the performance in a particular application circuit with this mode.
Figure 20 and Figure 21 quantify the benets of HMC1060LP3E’s PTAT mode. Figure 20 shows that the HMC1060LP3E’s
PTAT mode enables the HMC830LP6GE to achieve 0.5 dB better Phase Noise performance across all operating
frequencies at +85°C. Similarly, Figure 21 shows that the HMC1060LP3E’s PTAT mode enables the HMC830LP6GE
to achieve up to 0.8 dB increase in output power at +85°C across all operating frequencies.
External Enable Pin & Power-Up Timing
The HMC1060LP3E features an external Enable pin (EN) that can be used to enable/disable the outputs of the
HMC1060LP3E. This feature is especially useful in complex systems where the power-up and power-down procedure
of various subsystems requires precise management. HMC1060LP3E’s enable pin (EN) allows the controller to power-
cycle and turn on/off all of the circuits and components supplied by the HMC1060LP3E.
0
1
2
3
4
5
-0.05 0 0.05 0.1 0.15
VOLTAGE (V)
TIME (S)
HMC1060LP3E VR4 Output
HMC1060LP3E ENABLE Pin
HMC1060LP3E VREF Pin
0
1
2
3
4
5
-0.05 0 0.05 0.1 0.15
VOLTAGE (V)
TIME (S)
HMC1060LP3E VR4 Output
HMC1060LP3E ENABLE Pin
HMC1060LP3E VREF Pin
Figure 22. HMC1060LP3E Power up transient using
1 µF capacitor at the VREF input.
Figure 23. HMC1060LP3E Power up transient using 4.7
µF capacitor at the VREF input.
The power-up/power-down and power-cycle time can be controlled in the HMC1060LP3E by appropriately adjusting
the REF pin capacitor (C1 in the Application Schematic). As an example Figure 22 and Figure 23 show that using
a 1 µF capacitor on the REF pin of the HMC1060LP3E instead of 4.7 µF can reduce speed of the power up by
approximately 15 milliseconds. Figure 2 shows the effect on output noise when C1 is adjusted.
[6] Measured at +85°C. The HMC830LP6GE is powered solely by HMC1060LP3E.
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: [phone] • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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