Document
COMPARATORS - SMT
v07.0616
Typical Applications
The HMC874LC3C is ideal for: • ATE Applications • High Speed Instrumentation • Digital Receiver Systems • Pulse Spectroscopy • High Speed Trigger Circuits • Clock & Data Restoration
Functional Diagram
HMC874LC3C
20 Gbps CLOCKED COMPARATOR
Features
Propagation Delay Clock to Output: 120 ps Overdrive & Slew Rate Dispersion: 10 ps Minimum Pulse Width: 60 ps Resistor Programmable Hysteresis Differential Clock Control Input Bandwidth: 10 GHz Power Dissipation: 150 mW RSCML Version Available 16 Lead 3x3 mm SMT Package: 9 mm2
General Description
The HMC874LC3C is a SiGe monolithic, ultra fast comparator. The comparator supports 20 Gbps operation while providing 120 ps clock to data output delay and 60 ps minimum pulse width with 0.2 ps rms random jitter (RJ). 25 Gbps operation can be achieved with reduced output voltage swing. Overdrive and slew rate dispersion are typically 10 ps, making the device ideal for a wide range of applications from ATE to broadband communications. The output stages are designed to directly drive 400 mV into 50 ohms terminated to Vtt = (Vcco 2.0 V). The HMC874LC3C features high-speed latches with programmable hysteresis, and is configured to operate as a clocked comparator.
Electrical Specifications TA = +25 ºC, Vcci= +3.3 V, Vcco = +2.0 V, CLK / CLK = 1.6 V to 2.4 V, Vee = -3 V, Vtt = 0 V
Parameter
Conditions
Min.
Typ.
Max
Units
Input Voltage Range
Maximum DC Input Current = 20 mA
-2
2
V
Input Differential Voltage
-1.75
1.75
V
Input Offset Voltage (VOS) Input Offset Voltage, Temperature Coefficient
±5
mV
15
µV / °C
Input Bias Current
15
uA
Input Bias Current Temperature Coefficient
50
nA / °C
Input Offset Current
4
µA
Input Impedance
50
Ω
Common Mode Input Impedance
350
KΩ
Differential Input Impedance
15
KΩ
Hysteresis
Rhys = ∞
±1
mV
Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc.,
1
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 Phone: 781-329-4700 • Order online at www.analog.com
Trademarks and registered trademarks are the property of their respective owners.
Application Support: Phone: 1-800-ANALOG-D
COMPARATORS - SMT
v07.0616
HMC874LC3C
20 Gbps CLOCKED COMPARATOR
Clock Characteristics
Parameter Clock Input Impedance Clock to Data Output Delay, tdp Clock Input Range Clock Max Frequency, fmax
Conditions Each Pin
Min.
Typ.
Max
Units
50
Ω
120
ps
1.6
2.0
2.4
V
25
GHz
DC Output Characteristics, Vcco = +2.0 V, Vtt = 0 V
Parameter
Conditions
Min.
Typ.
Max
Units
Output Voltage High Level.