HMC661LC4B Datasheet, PDF (10/14 Pages) Hittite Microwave Corporation – ULTRA-WIDEBAND 4 GS/s TRACK-AND-HOLD AMPLIFIER

HMC661LC4B
v00.0312
ULTRA-WIDEBAND 4 GS/s TRACK-AND-HOLD AMPLIFIER
DC - 18 GHz
Linearity Measurement (Continued)
sampling frequency (through the sampling process) to produce a 1st order beat product at 30 MHz. Likewise, the 2nd
and 3rd harmonics of the input signal (generated via distortion in the T/H) beat with the 4th and 6th harmonics of the
sampling frequency respectively to produce 2nd and 3rd order beat products at 60 MHz and 90 MHz. In this manner,
the T/H nonlinearity in the vicinity of 1 GHz can be measured even though the 995 MHz fundamental and the 1.99 GHz
and 2.985 GHz nonlinear harmonics are well beyond the 256 MHz 4 dB bandwidth of the SINx/x response envelope.
The possible input frequency choices are overly limited when the low frequency beat-product technique is used at high
clock rates. A related high frequency beat-product measurement utilizing correction for the SINx/x envelope weighting
must be employed to measure linearity over a wide range of input frequencies. Hittite uses both low frequency and
high frequency beat product methods to measure linearity for a wide range of clock and signal frequencies. Our high
frequency beat-product measurement avoids excessive envelope correction error by maintaining all beat products
within the 4 dB bandwidth of the Sinc function, where the envelope response is well behaved and easily modeled.
Absolute Maximum Ratings
VccTH, VccOF, VccCLK
VccOB
Vee, VeeCLK
CLKP, CLKN Input Power
INP, INN Input Power
Junction Temperature
Continuous Pdiss (T= 85 °C)
Thermal Resistance
(junction to package bottom)
Storage Temperature
Operating Temperature
ESD Sensitivity (HBM)
2.1 Vdc
3 Vdc
-5.25 Vdc
+10 dBm
+10 dBm
125 °C
2W
20 °C/W
-65 to +150 °C
0 to +85 °C
Class 1B
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
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
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Application Support: Phone: [phone] or [e-mail]