E142AHF

E142AHF SEMTECH | Alldatasheet

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EDGE HIGH-PERFORMANCE PRODUCTS 1 www.semtech.com Edge142 Per Pin timing Deskew w 4x2 Cross Point Switch Description Features Functional Block Diagram

Applications

Revision 1, February 14, 2000 The Edge142 is a 4 X 2 cross point switch with output edge deskew capability. Manufactured in a high performance bipolar process, it is designed primarily for channel deskew applications in VLSI and Mixed-Signal test equipment. Any of the four input signals may be selected as the source for either output. The 142 performs test head multiplexing, adjacent channel multiplexing, and signal buffering for both the drive and receive signals, in addition to timing deskew. The delay value (and resolution) is controlled via an external voltage DAC. The delay element is designed specifically to be monotonic and very stable while delaying a very narrow pulse over a limited delay range. The part offers separate delays for rising vs. falling edges. The rising edge delay range is 1.5 ns and the falling edge adjustment range is 300 ps. The Edge142 is also well suited for 1:2 or 1:4 signal fanout applications that require: - multiple signal sources - output enable / disable - timing deskew on the output signals.

• Very Narrow (<1 ns) Pulse Width Capability
• Fmax > 850 MHz
• Independent Delay Adjustments for Positive and Negative Transitions
• Delay Range of 1.5 ns
• Trailing Edge Adjust Range of 300 ps
• Small Footprint: 52-pin MQFP Package (10 X 10 mm) with Internal Heat Spreader or Die Form
• Automatic Test Equipment – Per pin deskew in VLSI, Mixed-Signal, and Memory Testers – Clock Distribution with timing adjustment IN0 / 0* IN1 / 1* IN2 / 2* IN3 / 3* VDELAY 0 VFALL 0 OUT0 / 0* OUT1 / 1* MUX OUT0 / 0* MUX OUT1 / 1* VDELAY 1 VFALL 1

4 X 2

2 X 2

∆ T ∆ T

2 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 PIN Description Pin Name Pin # Description Digital IN0, IN0* IN1, IN1* IN2, IN2* IN3, IN3* 41, 42 44, 45 48, 47 51, 50 The multiplexer input signals. (Differential digital inputs.) OUT0, OUT* OUT1, OUT1* 26, 25 14, 15 The selected and delayed output signals. (Differential ECL compatible outputs.) MUX OUT0, 0* MUX OUT1, 1* 23, 22 17, 18 Selected monitor outputs. (Differential ECL compatible levels.) S00, S01 S10, S11 32, 31 8, 9 Single-ended 10KH ECL compatible inputs which select the channel 0 and channel 1 source. MUX0 SEL MUX1 SEL Single-ended 10KH ECL compatible inputs which select the two output monitor sources. EN* 29 Single-ended 10KH ECL compatible input which enables the delayed outputs. MUX EN 11 Single-ended 10KH ECL compatible input which enables the monitor outputs. Analog VDELAY0 VDELAY1 Analog voltage inputs which control the amount of propagation delay for each channel. VFALL0 VFALL1 Analog voltage inputs which control the amount of falling edge delay for each channel. VMID0 VMID1 Analog voltage inputs which control the amount of pulse width compensation for each channel. REXT1 36 Analog input current used to establish the bias current for the VDELAY, VFALL, and VMIDinputs. REXT2 4 Analog input current used to establish the bias level for the delay cells. COMP1, COMP2 Op Amp compensation capacitors. TDP, TDN 21, 19 Positive and negative terminals to the thermal diode string. Power GND 6, 12, 13, 16, 24, 27, 28, 34, 40, 43, 49, 52 Device ground (positive device supply). VEE 7, 20, 33, 46

3 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 PIN Description (continued) VDELAY0 VMID0 VFALL0 REXT1 COMP1 GND VEE S00 S01 MUX0 SEL EN* GND GND GND IN0 IN0* GND IN1 IN1* VEE IN2* IN2 GND IN3* IN3 GND OUT0 OUT0* GND MUX OUT0 MUX PUT0* TDP VEE TDN MUX OUT1* MUX OUT1 GND OUT1* OUT1 VDELAY1 VMID1 VFALL1 REXT2 COMP2 GND VEE S10 S11 MUX1 SEL MUX EN GND GND 52-Pin MQFP 10mm x 10mm with Internal Heat Spreader

control the falling edge delay. signals may be enabled or disabled. stable. Figure 1 shows a simplified block diagram. Figure 1. Edge142 Block Diagram

pulse width may then be adjusted via external control. between the selection of channel 0 and channel 1. enabled or disabled, as documented below. which are described in the table below. amount (Tspan) determined by the analog input VDELAY . for Tspan vs. VDELAY is shown in Figure 4. Figure 2. VDELAY Control

either expand or contract an input signal . transfer function for Tfall vs. VFALL is shown in Figure 5. affect the falling edge delay. that expands or contracts a pulse. calibrating a system, VDELAY should be adjusted first. adjusted after VDELAY is established. differential timing inputs are pulled to a logical zero state. Figure 3. Falling Edge Control

in the constant 1.0 mA input current. I (VFALL, VDELAY , VMID) = 3.0V / REXT1. of DAC programming techniques. connect all VDELAY and VMID pins to ground. COMP1 and COMP2 are Op Amp compensation pins. Figure 6. Thermal Diode String

9 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142

Application Information

The Edge142 is designed specifically to buffer, multiplex, and deskew multiple comparator paths from multiple test heads to the timing generators located back in the tester mainframe. The Edge142 provides a one IC solution between the pin electronics and the error strobing circuitry. Most importantly, the Edge142 performs all of the timing deskew functions, thus removing the burden of timing compensation from the error section. By performing the calibration with the Edge142, there may be some improvement in the edge to edge retrigger time inside the timing generator. Device Under Test Comp A Comp B Chan N Chan N + 1 Test Head 1 Edge 142 Functions

• Channel Multiplexing
• Test Head Multiplexing
• Comp A vs. Comp B Deskew
• Chan N vs. Chan N + 1 Deskew
• Test Head 1 vs. 2 Deskew
• Rising vs. Falling Edge Deskew
• Buffer Signals into Timing Board Performance Benefits
• All Timing Lines – Point to Point Routing – Fully Differential
• Single IC solution between P/E and TG Device Under Test Comp A Comp B Device Under Test Comp A Comp B Chan N Chan N + 1 Test Head 2 Device Under Test Comp A Comp B TIMING BOARD Edge142

10 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 Application Information (continued) PIN Descriptions Driver Fan Out The Edge142 is also designed to support the fanning out and deskewing of driver data, driver enable, and load enable signals to multiple test heads. By controlling the multiplexer and output enable signals, the signals may be routed to either test head. By using the Edge142 for timing calibration, the timing generator can generate “pure” timing signals, regardless of the timing errors associated with driving one test head vs. another. Removing the need for the timing generator to perform the deskew function, the restriction on consecutive edges may be improved. Device Under Test Channel N Edge 142 Functions

• Test Head to Test Head Deskew – TG restrictions on edge regeneration improved
• Driver Data vs. Enable Deskew
• Rising vs. Falling Edge Deskew
• Test Head Multiplexing
• Cable Driver Performance Benefits
• Point to Point Routing on all transmission lines TEST HEAD 1 Device Under Test Channel N TEST HEAD 2 Mux Out 1 Out 1 Out 2 Mux Out 0 Data Dvr Enable Timing Generator Edge142

11 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 Application Information (continued) Edge 142 Temperature Coefficient vs. VDELAY vs. Ambient VDELAY [V] Temp Co [ps / °C] 0 Tpd+ 30-40°C Tpd- 30-40°C Tpd+ 40-50°C Tpd- 40-50°C Tpd+ 50-60°C Tpd- 50-60°C Edge 142 Temperature Coefficient vs. VDELAY vs. Ambient VDELAY [V] Temp Co [ps / °C] 0 Tpd+ 30-40°C Tpd- 30-40°C Tpd+ 40-50°C Tpd- 40-50°C Tpd+ 50-60°C Tpd- 50-60°C Temperature Coefficient The propagation delay temperature coefficient is shown in the above two charts. The same information is displayed on two different scales to enhance readability. The 142 functions over the entire VDELAY voltage range, but the timing error due to changes in the ambient temperature becomes large for VDELAY < -1.1V . If extreme accuracy is required, the recommended voltage range is: +0.1V >= VDELAY >= -1.1V . If greater range is needed and thermal drift can be tolerated, or the ambient temperature is very tightly controlled, the entire voltage range may be used.

12 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 Application Information (continued) EL11 Clock Spreader Tpd vs. Frequency Frequency [MHz] Error [ps] -20 -10 0.5 10 20 50 75 100 125 150 200 250 300 Tpd+ Error Tpd- Error Edge142 TPD+ Error vs. Frequency Frequency [MHz] Error [ps] -20 -10 0.5 10 20 50 75 100 125 150 200 250 300 VD=+0.1V VD=-0.1V VD=-0.3V VD=-0.5V VD=-0.7V VD=-0.9V VD=-1.1V VD=-1.3V VFALL & VMID=-0.6V VEE=-5.2V Edge142 TPD- Error vs. Frequency Frequency [MHz] Error [ps] -20 -10 0.5 10 20 50 75 100 125 150 200 250 300 VD=+0.1V VD=-0.1V VD=-0.3V VD=-0.5V VD=-0.7V VD=-0.9V VD=-1.1V VD=-1.3V VFALL & VMID=-0.6V VEE=-5.2V Prop Delay vs. Frequency The 142 shows very little change in propagation delay vs. frequency. The following three charts show the variation in the prop delay of a rising edge and a falling edge as the frequency is varied over a wide range. The first chart shows the Motorola 10EL11 clock spreader timing error for both the rising and falling edge with the input frequency varied from .5 MHz to 300 MHz. This information is used as a reference to compare the 142 against. The second and third charts show the 142 under identical conditions. The data is broken out into one chart for the rising edge and a separate chart for the falling edge. In addition, the timing error is listed over the entire delay range of the 142.

13 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 Application Information (continued) EL11 Clock Spreader Tpd vs. 1%-99% Duty Cycle Duty Cycle [%] (Period=100 ns) Error [ps] -100 -80 -60 -40 -20 100 0 1 02 0 3 0 4 05 06 0 7 080 9 0 1 0 0 Tpd+ Error Tpd- Error Edge 142 Tpd+ vs. 1%-99% Duty Cycle Duty Cycle [%] (Period=100 ns) Error [ps] -100 -80 -60 -40 -20 100 0 1 0 2 03 04 0 5 06 07 0 809 0 1 0 0 Tpd+ Error, +0.1V Tpd+ Error, -0.1V Tpd+ Error, -0.3V Tpd+ Error, -0.7V Tpd+ Error, -0.9V Tpd+ Error, -1.1V Tpd+ Error, -1.3V REXT2=2.94K Edge 142 Tpd- vs. 1%-99% Duty Cycle Duty Cycle [%] (Period=100 ns) Error [ps] -100 -80 -60 -40 -20 100 0 1 0 2 03 04 0 5 06 07 0 809 0 1 0 0 Tpd- Error, +0.1V Tpd- Error, -0.1V Tpd- Error, -0.3V Tpd- Error, -0.7V Tpd- Error, -0.9V Tpd- Error, -1.1V Tpd- Error, -1.3V REXT2=2.94K Prop Delay vs. Duty Cycle The 142 shows very little change in propagation delay vs. input duty cycle. The following three charts show the variation in the prop delay of a rising edge and a falling edge as the duty cycle is varied from 1% to 99%. Since the input signal period is 100 ns, a 1% duty cycle corresponds to a 1 ns positive input pulse. A 99% duty cycle corresponds to a 1 ns negative input pulse. The first chart shows the Motorola 10EL11 clock spreader timing error for both the rising and falling edge. This information is used as a reference to compare the 142 against. The second and third charts show the 142 under identical conditions. The data is broken out into one chart for the rising edge and a separate chart for the falling edge. In addition, the timing error is listed over the entire delay range of the 142.

14 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142

Package Information

D D A B

0.25 C A – B D

e E SEE DETAIL "A" TOP VIEW 5 7 5 7 52 7 ZD ZE 4X 0.20 C A – B D COO BOTTOM VIEW

15 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 Package Information (continued) –A, B, D– 3 DETAIL "A" e 0.13 R. MIN. 0.40 MIN. 0 MIN.˚ 0 – 7˚ C C 0.13 / 0.30 R. L 1.60 REF. GAGE PLANE 0.10 S– 0.25 DETAIL "B" 12 – 16 1.41 REF. SEE DETAIL "B" 12 – 16˚ A H C 0.076 0.13 / 0.23 0.13 / 0.1712 BASE METAL WITH LEAD FINISHb ccc M SSA – B DC SECTION C-C Notes: 1. All dimensions and tolerances conform to ANSI Y14.5-1982. 2. Datum plane -H- located at mold parting line and coincident with lead, where lead exits plastic body at bottom of parting line. 3. Datums A-B and -D- to be determined where centerline between leads exits plastic body at datum plane -H-. 4. To be determined at seating plane -C-. 5. Dimensions D1 and E1 do not include mold protrusion. Allowable mold protrusion is 0.254 mm per side. Dimensions D1 and E1 do include mold mismatch and are determined at datum plan -H-. 6. “N” is the total # of terminals. 7. Package top dimensions are smaller than bottom dimensions by 0.20 mm, and top of package will not overhang bottom of package. 8. Dimension b does not include dambar protrusion. Allowable dambar protrusion shall be 0.08 mm total in excess of the b dimension at maximum material condition. Dambar cannot be located on the lower radius or the foot. 9. All dimensions are in millimeters. 10. Maximum allowable die thickness to be assembled in this package family is 0.635 millimeters. 11. This drawing conforms to JEDEC registered outline MS-108. 12. These dimensions apply to the flat section of the lead between 0.10 mm and 0.25 mm from the lead tip. A D ZD E ZE L N e b aaa JEDEC VARIATION All Dimensions in Millimeters Min. 0.10 1.95 0.73 0.22 0.22 Nom. 2.15 0.15 2.00 0.88 0.65 0.30 0.12 Max. 2.35 0.25 2.10 1.03 0.38 0.33 Note AC Comments Soldered PkgHeight above PCB PCB Clearance Package Body Thickness Package Body Length Package Body Width # Pins Lead Pitch 13.20 BSC. 10.00 BSC. 7.80 REF. 1.10 REF. 13.20 BSC. 10.00 BSC. 7.80 REF. 1.10 REF.

16 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 Recommended Operating Conditions Absolute Maximum Ratings Parameter Symbol Min Typ Max Units Device Ground GND 000V Negative Power Supply VEE -4.2 -5.2 -5.5 V Ambient Operating Temperature TA 0 +70 oC Parameter Symbol Min Typ Max Units VEE (relative to GND) -7.0 0 V Voltage on any Digital Pin VEE GND V Output Current -50 mA Ambient Operating Temperature TA -55 +70 oC Storage Temperature TS -65 +150 oC Junction Temperature TJ +150 oC Soldering Temperature (5 seconds, 1/4" from pin) TSOL 260 oC

17 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 DC Characteristics Parameter Symbol Min Typ Max Units Inputs Differential Digital Input High Voltage IN, IN* IN - IN* 300 mV Differential Digital Input Low Voltage IN, IN* IN* - IN 300 mV Digital Input High Voltage S00, S01, S10, S11, MODE, EN*, MUX SEL, MUX EN VIH -1070 0 mV Digital Input Low Voltage S00, S01, S10, S11, MODE, EN*, MUX SEL, MUX EN VIL VEE -1450 mV Input Common Mode Range IN, IN* -2.0 -0.5 V Input High Current (Vin = VIHmax) IIH -100 120 250 µA Input Low Current (Vin = VILmin) IIL -100 90 150 µA VDELAY, VFALL, & VMID Input Currents Iin .84 .990 1.08 mA Outputs OUT0 / OUT0*, OUT1 / OUT1* MUX OUT0 / MUX OUT0*, MUX OUT1 / MUX OUT1* Digital Output High Voltage OUT - OUT* 700 800 mV Digital Output Low Voltage OUT* - OUT 700 800 mV Output Common Mode Range OUT + OUT* -1.1 -1.35 -1.5 V VEE Supply Current VEE = -4.5V IEE -255 -200 -155 mA VEE = -5.0V IEE -260 -205 -160 mA VEE = -5.5V IEE -265 -210 -165 mA Test conditions (unless otherwise specified): “Recommended Operating Conditions” with REXT1 = 2.94 KΩ , and REXT2 = 2.94 K Ω . All parameters specified at 0 °C are guaranteed by characterization and are not production tested. The specified limits shown can be met only after thermal equilibrium has been established. Thermal equilibrium is established by applying power for at least 2 minutes while maintaining a transverse air flow of 400 linear feet per minute over the device mounted either in the test socket or on the printed circuit board.

18 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142 AC Characteristics Parameter Symbol Min Typ Max Units Propagation Delays Minimum Delay (Pulse Width >= 1.0 ns) Delay Range vs. Pulse Width Input Pulse Width >= 1.0 ns (+0.1V < VDELAY < -1.2V) Tspan 1.1 1.4 ns VFALL Range of Adjustment Input Pulse Width >= 1.0 ns (+0.1V < VFALL < -1.2V) Tfall 170 300 ps Propagation Delay Tempco (Note 1) -1.1V <= VDELAY, VFALL <= +0.1V <2 ps / oC Output Rise/Fall Times (20% to 80%) (Note 1) Tr, Tf 300 420 500 ps Test conditions (unless otherwise specified):“Recommended Operating Conditions” with TA = 25 °C with 400 LFPM of airflow, and all outputs terminated with 50 Ω to –2.0 V . Timing reference points at the differential crossing points for input and output signals, REXT1 = 2.94 KΩ , and REXT2 = 2.94 KΩ . All input signals are fully differential. Values are based on nominal temperature and a supply voltage of –5.2 V . Note 1: Based upon characterization data. Not production tested. For more complete data, refer to the application information section of the data sheet. The specified limits shown can be met only after thermal equilibrium has been established. Thermal equilibrium is established by applying power for at least 2 minutes while maintaining a transverse air flow of 400 linear feet per minute over the device mounted either in the test socket or on the printed circuit board.

19 2000 Semtech Corp. www.semtech.com EDGE HIGH-PERFORMANCE PRODUCTS Edge142

Ordering Information

Edge High-Performance Division 10021 Willow Creek Rd., San Diego, CA 92131 Phone: (858)695-1801 FAX (858)695-2633 Model Number Package E142AHF 52 Pin 10mm x 10mm MQFP with Internal Heat Spreader D142 Die Form EVM142AHF Edge142 Evaluation Module