evm629axf Semtech Corporation, evm629axf Datasheet

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evm629axf

Manufacturer Part Number
evm629axf
Description
Timing Deskew Quad Fanout Element
Manufacturer
Semtech Corporation
Datasheet
Revision 3 / August 1, 2005
The Edge629 is a monolithic timing delay and signal fanout
solution manufactured in a high-performance bipolar pro-
cess. In Automatic Test Equipment (ATE) applications, the
Edge629 buffers, distributes, and aligns timing signals
across multiple channels (typically found inside Memory
Test Systems). It is also suitable for per pin deskew in
Logic Testers.
The Edge629 supports:
• Minimum pulse width = 330 ps with Falling
• Net usable delay span
• Falling Edge Adjust
• On Board DACs to generate 5 ps resolution
With a maximum operating frequency of 1 GHz, the
Edge629 is optimized for extremely high speed, high ac-
curacy testers, particularly those aimed to test memory
devices.
The Edge629 solves several difficult problems associated
with aligning multiple timing signals because it can:
• delay very narrow pulses over a long
• adjust the falling edge independently from the overall
• maintain extreme timing accuracy for very narrow
• maintain tight timing accuracy over changes in
• Memory Test Equipment
• Logic Testers
• Clock / Signal Fanout
TEST AND MEASUREMENT PRODUCTS
Description
Applications
Edge Adjust disabled, 500 ps with Falling
Edge Adjust enabled
timing span
propagation delay
(sub-ns) pulses
frequency, duty cycle, and pattern.
– Data Fanout
– Channel Deskew
– Per Pin Deskew
250 ps
4.0 ns
1
• Fmax
• Independent Falling Edge Adjust
• Small Footprint (10 mm x 10 mm)
• Excellent Timing Accuracy
• Very Stable Timing Delays
• 5 ps Resolution
• ECL, CMOS Compatible Inputs
Featur es
Functional Block Diagram
SEL / SEL*
IN0 / IN0*
IN2 / IN2*
IN3 / IN3*
IN1/ IN1*
IN / IN*
1 GHz Timing Deskew and Quad
1 GHz
T–
T–
T–
T–
Coarse
Coarse
Coarse
Coarse
T
T
T
T
Fanout Element
Edge629
Fine
Fine
Fine
Fine
T
T
T
T
www .semtech.com
OUT0 / OUT0*
OUT1 / OUT1*
OUT2 / OUT2*
OUT3 / OUT3*

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evm629axf Summary of contents

Page 1

TEST AND MEASUREMENT PRODUCTS Description The Edge629 is a monolithic timing delay and signal fanout solution manufactured in a high-performance bipolar pro- cess. In Automatic Test Equipment (ATE) applications, the Edge629 buffers, distributes, and aligns timing signals across multiple channels ...

Page 2

TEST AND MEASUREMENT PRODUCTS PIN Description ...

Page 3

TEST AND MEASUREMENT PRODUCTS PIN Description (continued IN3* IN3 VCC3 VCC2 IN2* IN2 VEE2 IN* IN VEE1 IN1 IN1* VCC1 VCC0 IN0 IN0* 17 2005 Semtech Corp. Rev. 3, 8/1/05 E629AXF 64 Pin ...

Page 4

TEST AND MEASUREMENT PRODUCTS Circuit Description Introduction The Edge629 is a quad channel delay element with 2 basic operating modes: 1) Fanout – 1 signal in, 4 signals out 2) Pass Through – 4 signals in, 4 signals out In ...

Page 5

TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) Fine Delay Fine delay is accomplished using an analog delay cell and an on-chip 6 bit DAC (see Figure 2). The fine delay range is designed to be ~2X the coarse delay resolution. ...

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TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) Falling Edge Adjustment The falling edge of a signal may be adjusted to compen- sate for any system level pulse width distortion that may occur. Falling edge adjust (FEA) is accomplished using an ...

Page 7

TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) Programming The Edge629 is programmed serially with 3 control lines: SDI – serial data input CS – chip select UPDATE – register update which are all synchronous with CK. With CS valid (high), ...

Page 8

TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) CK0 ... CK SDI CD0 CD1 CD2 CD3 CD4 FD0 FD1 FD2 FD3 FD4 SDI SDI FE0 FE1 FE2 FE3 FE4 CS UPDATE 2005 Semtech Corp. Rev. 3, 8/1/05 629 Digital Interface Timing ...

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TEST AND MEASUREMENT PRODUCTS Circuit Description (continued Channel Channel Channel Channel 3 E UPDATE CS CK SDI 2005 Semtech Corp. Rev. 3, 8/1/ ...

Page 10

TEST AND MEASUREMENT PRODUCTS Circuit Description (continued) Timing Inputs IN/IN* and IN0/IN0* – IN3/IN3* are high speed differen- tial inputs which require >300 mV of differential input voltage for reliable switching. These inputs may receive differential input signals with amplitudes ...

Page 11

TEST AND MEASUREMENT PRODUCTS Package Information PIN Descriptions N 1 EXPOSED HEATSINK 3.56 .50 DIA. –A– Top View .20 RAD. TYP . 20 RAD. TYP . 6˚ 4˚ A .25 b .17 MAX ddd M C A– ...

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TEST AND MEASUREMENT PRODUCTS Recommended Operating Conditions ...

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TEST AND MEASUREMENT PRODUCTS DC Characteristics ...

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TEST AND MEASUREMENT PRODUCTS AC Characteristics ...

Page 15

TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued) Test Conditions (unless otherwise specified): "Recommended Operating Conditions." Note 1: Tested with an input pulse = 50 ns. This parameter is guaranteed by characterization for input pulse widths 700 ps. Note 2: Coarse ...

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... Semtech Corporation Test and Measurement Division 16 Edge629 ...

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