E7802 SEMTECH [Semtech Corporation], E7802 Datasheet
E7802
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E7802 Summary of contents
Page 1
... A 5V driver output and receiver input range allow the E7802 to interface directly with TTL, ECL, CMOS (3V, 5V, and 7V), LVCMOS, and custom level circuitry, as well as high voltage levels required for many special test modes in Flash Devices and for stressing devices under test ...
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... Short circuit protection enable pin (has 5.3Kohms internal pull-down to GND). Connect to VDD if short circuit protection is not required in the application. Open drain short circuit flag that pulls-down to indicate that a channel of the E7802 is in short circuit protection mode. Connected to anode of temperature sensing diodes. 2 E7802 www ...
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... TEST AND MEASUREMENT PRODUCTS PIN Description (continued) SCP* 1 VDD 2 VDD 3 VEE 4 VEE 5 INT* 6 GND 7 TEMP 8 © 2008 Semtech Corp. , Rev. 5, 3/7/08 Pinout 32-Pad 5mm X 5mm MLP with Exposed Thermal Pad (Connect to VEE) 3 E7802 24 VINP[1] 23 VH[0] 22 DOUT[0] 21 VL[0] 20 VL[1] 19 DOUT[1] 18 VH[1] 17 VINP[1] www.semtech.com ...
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... In addition to the comparator outputs pulling down, the INT* pin will become active (pull-down) when either channel detects a s hort-circuit condition. Multiple DOUT E7802 INT* pins may be wire-or’d together with a single HiZ VDD pull-up load to create a system-wide notification signal HiZ that a short circuit has occurred on one of the chanels in the system ...
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... Each channel of the E7802 features two comparators connected in a window comparator configuration. CVH and CVL are high impedance analog voltage inputs that establish the upper and lower thresholds for the window comparator. CVH should always be greater than or equal to CVL for normal comparator operation. QH and QL are ...
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... VINP input voltages of VEE + 2V when DOUT and VINP are connected in an application. Thermal Diode String The E7802 features an internal diode string connected between EN[1] and TEMP that can be used to perform device junction temperature measurements as shown in the figure below. NOTE: EN[1] must be asserted “low” ...
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... Furthermore, the lower-voltage supplies should never be greater than the higher-voltage supplies. This can easily be implemented by utilizing the diode circuit depicted in Figure 3 for each PCB utilizing the E7802. The following conditions must be met at all times during power-up and power-down: 1. ...
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... Application Information (continued) Cooling Considerations Depending on the maximum operating frequencies and voltage swings the E7802 will need to drive, it may require the use of an external heatsink to keep the maximum die junction temperature within a safe range and below the specified maximum of 100°C. ...
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... the normalized amount of time that logic L(L) R ds(L) Driving Currents Larger than 200mA The driver channels of the E7802 can be connected in parallel to drive currents larger than the rated 200mA per individual driver. and R in Figure ds( ...
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... TEST AND MEASUREMENT PRODUCTS Application Information (continued) Optimizing Driver Waveforms Overshoot/Undershoot/Preshoot E7802 Driver overshoot, undershoot and preshoot are functions of the DOUT edge rate. Slower DOUT edge rates are associated with smaller overshoot, undershoot and preshoot amplitudes. The DOUT edge rate is influenced ...
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... See Applications Note PE-A1 for proper capacitor and VH/VL supply selection. Note 2: DVEE supply can be connected to GND if DOUT does not need to swing below 0V. Note 3: Choose Rpu such that the INT* current is less than 5mA. © 2008 Semtech Corp. , Rev. 5, 3/7/08 E7802 Hookup Diagram DVEE (Note 2) VCC 24 VINP[0] VH[0] 23 ...
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... COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. © 2008 Semtech Corp. , Rev. 5, 3/7/08 32-Pad 5mm x 5mm QFN Package Outline SEATING PLANE C D1 LxN E/2 bxN e bbb E7802 DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM MAX - - A .031 .039 0.80 1. .000 .002 ...
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... SQUARE PACKAGE - DIMENSIONS APPLY IN BOTH " X " AND " Y " DIRECTIONS. © 2008 Semtech Corp. , Rev. 5, 3/7/08 32-Pad 5mm x 5mm QFN Land Pattern DIM E7802 DIMENSIONS INCHES MILLIMETERS (.197) (5.00) .165 4.20 .146 3.70 .146 3.70 .020 0.50 .012 0.30 .031 0.80 .228 5.80 ...
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... VDD θjc θ Min Max -0.5 DVEE + 16 -6 +0.5 VEE +0.5 -0.5 +6.0 -0.5 VDD + 0.5 DVEE + 0.5 VCC + 0.5 VEE - 0.5 VCC + 0.5 -65 +150 +150 +260 Min Typ Max DVEE + 14.5 DVEE + 15 -5.25 -5 -4.75 -3.6 0 3.0 3 100 www.semtech.com E7802 Units °C °C °C Units ° C/W ° C/W ° C/W ° C ...
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... IOUT(DC) -200 IOUT(AC) ±1.4 205 75 VOL VCVH VCVL VCVL VEE + 3 IIN -15 V VEE + 2 VINP I VINP -30 -200 VHYS VOS -50 VOH 2.4 VOL < V < DOUT VH 5 E7802 Typ Max Units VCC V VCC - 8 8.5 Ω 11 Ω 0.5 2 0.8 V +200 +75 nA +200 mA ±3.6 A 300 ...
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... DC Characteristics (continued) Parameter Power Supply Current (Quiescent) Positive Supply Current Driver Negative Supply Current Negative Supply Current Digital Supply Current © 2008 Semtech Corp. , Rev. 5, 3/7/08 Symbol Min ICC 11 IDEE 1.5 IEE 11 IDD 2 E7802 Typ Max Units www.semtech.com ...
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... Tprotect 125 Tpd T INT* Tr/Tf 9.5 Tr/Tf 10 Tr/Tf 2 Tr/Tf 3 Tr/Tf 3.5 Tr/Tf 4 Tr/Tf 2 Tr/Tf 3 Tr/Tf 3.5 Tr/Tf 4 Fmax Fmax CDOUT 50 Vovershoot Mpw 7 E7802 Max Units 15 ps/° 600 ns 600 5 5.5 ns 6.5 ns MHz MHz MHz ...
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... Figure 5c. Driver Output/Comparator Input, 1KΩ Load 8 Symbol Min Typ Tpd +/- 3.5 5 0.5 ∆Tpd/∆T 15 ∆Tpd/∆(VINP- VCH(L)) 2.5 0.25 ∆Tpd(cm) Fmax 100 CVINP 3 45.3 Ω Measurement Point ( 18nH 20" T-line Oscilloscope 5 0 Ω Ω Oscilloscope 5 0 Ω E7802 Max Units 6 ps/° C 3.5 ns 0.5 ns 0.5 ns MHz www.semtech.com ...
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... E N Figure 7. Driver HiZ Enable/Disable Delay Measurement Definition Measurement Point ( OUT(H) 0.0V © 2008 Semtech Corp. , Rev. 5, 3/7/08 Tpd+ Tpd- Toe Transmission line terminated 50Ω to ground. OUT(H) = 0.4V, 1V, 3V Fmax Figure 8. Driver Fmax Measurement Definition 50% Time T z 0.90 OUT(H) Time www.semtech.com E7802 ...
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... Comparator Output Tpd 50 50% Tpd- INPUT: Freq = 10 MHz; 50% Duty Cycle 1V/ns 20-80% Tr/Tf for 500mV p-p = 0.3ns; for 5V p-p = 3ns 2.5V 100mV 2.5V CVH/L 0.0V Tpd 50 50% Tpd+ 20 Tpw– Time V CVH , V CVL Tpd- Time Time Tpd+ 100mV 2.5V Time Tpd+ Time Time Tpd- E7802 www.semtech.com ...
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... TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued) V VINP +1.5V +1.0V 0.5V Comparator Output Figure 12. Comparator Dispersion: Common Mode Definition Figure 13. Driver Overshoot, Undershoot, and Ringback © 2008 Semtech Corp. , Rev. 5, 3/7/08 INPUT: Freq = 10 MHz V CVH/L = 50% V CVH/L = 50% V CVH/L = 50% Tpd+ 2 E7802 Tpd- Time www.semtech.com ...
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... Contact Information © 2008 Semtech Corp. , Rev. 5, 3/7/08 Package 32-pad, 5mm x 5mm QFN 32-pad, 5mm x 5mm QFN (Tape & Reel) E7802 Evaluation Board This product is lead-free. Pb Semtech Corporation Test and Measurement Division 10021 Willow Creek Rd., San Diego, CA 92131 Phone: (858)695-1808 FAX (858)695-2633 ...