Micram RF modules

For Fiber-Optical Prototyping and Measurement Applications

Micram RF Modules provide a convenient and effective means of implementing Micram silicon in a test lab environment. Originally developed for internal use, Micram RF Modules eliminate time-consuming configuration work and provides a stable, reliable chip mount with easy access for any kind of test equipment.

For years, the Micram engineering team dealt with the many problems of building custom measurement rigs for its High-Speed Measurement Laboratory. Hours of soldering and fitting cables often resulted in poor performance and inaccurate measurements due to the lack of stable accessory components, such as suitable standardized connectors and provision for cooling, as well as signal reflections and signal losses caused by rig assembly and configuration problems.

After much experience, thought and discussion, the Micram team created a special mount for Micram chips under test, using brass modules and suitable high-frequency substrates and providing easy signal access through standard K-connectors.

Test and measurement of high-speed fiber-optical systems requires a range of capabilities: multiplexing to generate extremely high bit rates (up to 100 Gbit/s and beyond), de-multiplexing to enable lower-performing oscilloscopes to measure performance, clock and data recovery and clock phase shifting. Micram created RF Modules for each of these functions and now offers them for use in other labs.

The following modules are available (please select from Article Index at the top of this page to see details):

Please note: The silicon used in Micram RF Modules is fabricated using a research SiGe technology (fT=200GHz); therefore Micram cannot guarantee electrical specifications long-term. However, each module comes with an individual measurement protocol and meets our published specifications at time of delivery.

To access the detailled datasheets or to request a quotation please use the login box to the left or register here and leave us a message.

CDR8086 Clock & Data Recovery with 1:2 Demux for 80 or 86 Gb/s

The CDR8086 is a High-Speed CDR with integrated 1:2 Demultiplexer for data rates of 80/86 Gb/s and above. Key features are:

• single-ended and differential I/O operation
• broadband operation
• clock and clock / 2 outputs available
• adjustable output swing
• single supply voltage

The CDR 8086 is a clock and data recovery circuitry with integrated 1:2 DEMUX, VCO and the opportunity to drive the module with an external clock signal. It is designed to fit for 80 Gb/s (CDR 80) or 86 Gb/s (CDR 86) signal systems. he module can selectively be used with an external clock signal or the internal VCO. To choose between both possibilities a clock selector is included. The default setting is the external clock drive.

MX2180 2:1 Mux for 80 Gb/s

The MX2180 is a High-Speed 2:1 Multiplexer for data rates above 80 Gb/s. Key features of the MX2180:

• single-ended and differential IO operation
• broadband operation
• 360^o at 80 Gb/s clock phase margin at data inputs
• sampling flip flops for data inputs to ensure optimal timing at mux core
• adjustable output swing
• adjustable duty cycle
• single supply voltage

At the data inputs the MX2180 consists of two symmetrical input buffers which allows single-ended as well as differential drive. Furthermore the input buffers provide a high input sensitivity of 50 V_pp. The same holds for the clock input which runs at half of the frequency of the output data rate (half-rate clocking: e.g. 40 GHz clock and 80 Gb/s output data rate).

Main fields of application are:

• general high-speed pattern generation
• speed upgrade of measurement equipment (e.g. Agilent ParBert or Anritsu 1758/1763)
• low jitter test data generation

Packages:
The MX2180 is available as ruggedized K and/or V connector module.

MX4140 4:1 Multiplexer for up to 43 Gb/s

The MX4140 is a 4:1 high-speed Multiplexer for data rates up to 43 Gb/s. Key features are:

• single-ended and differential I/O operation,
• broadband operation,
• adjustable output swing,
• scaleable architecture (e.g. 16:1 MUX),
• single supply voltage.

At the data inputs, the MX4140 consists of four symmetrical buffers which allow for single-ended as well as differential drive. Furthermore the input buffers provide a high input sensitivity of 50 mV_pp (single-ended).
The same holds for the clock input, which runs at half of the frequency of the output data rate (so called half-rate clocking: e.g. 20 GHz clock for 40 Gb/s output data rate). This allows to use reasonably priced RF-synthesizers in the 26.5 GHz band for pattern generation in the 40 Gb/s range.

CK20 Clock Phase Shifter 20Ghz, 2 channels, fully adjustable

The CK20 is a two channel, high precision electronically adjustable Phase Shifter for clock signals up to 26 GHz.

Key features are:

• two selectable differential inputs,
• two seperate phase shift channels,

• octave-band operating range 12...26 GHz,
• continuous phase shifting (0...360°),
• optional low frequency extension,
• adjustable output swing,
• phase detector output,
• single supply voltage.

The CK20 exhibits two independent electronically selectable 12...26 GHz clock inputs. Symmetrical input buffers allow for single-ended as well as differential drive and provide a high input sensitivity of 50 mV_pp (single-ended).

The MA40 has a fully symmetrical differential input buffer. This allows differential as well as single- ended drive and is optimized for 50? line termination.

The MA10 is a versatile High-Speed Measurement Amplifier for data rates up to 10 Gb/s. Key features are:

• single-ended and differential I/O operation,
• adjustable input threshold,
• adjustable input bias,
• switchable offset cancellation,
• adjustable output swing,
• DC coupled operation,
• single supply voltage.

The MA10 has a fully symmetrical differential input buffer. This allows differential as well as single-ended drive and is optimized for 50? line termination.

 

 

 

Parameter	Min.	Typ.	Max.	Unit
Junction temperature range	0		125	°C
Ambiente temperature range	0		50	°C
Power supply	- 6.0	- 5.5	- 4.5	V
Current consumption	80	90	100	mA
Junction temp. range	0	75	110	°C
Differential input amplitude	50	300	1000	mVpp
Input Common mode range	- 375		+ 250	mV
Input frequency range	1	10	12	Gb/s
Input resistance	48	60	72	?
Differential output amplitude	400	500	600	mVpp
Output amplitude adjustment range	100		1000	mVpp
Output Common mode range	- 500	- 250	- 50	mV
Output resistance	52	65	78	?