Micrel, Inc. 3.3V 800MHz PRECISION PECL AMPLIFIER WITH LOW-GAIN FEEDBACK ■ 3.0V to 3.8V power supply option ■ Guaranteed AC parameters over temperature: • fMAX = 800MHz • < 200ps differential propagation delay (D to QFB) • < 730ps differential propagation delay (D to QHG) • < 250ps tr / tf ■ Low-gain feedback path QFB = +10V/V ■ VBB reference output voltage ■ Wide temperature range: –40°C to +85°C ■ Available in 10-pin (3mm × 3mm) MSOP ■ LVPECL/LVECL/CMOS compatible EN option Precision Edge® SY89207L ® Precision Edge SY89207L Precision Edge® DESCRIPTION The SY89207L is a differential receiver amplifier optimized for crystal oscillator applications. The device includes an additional low differential gain (+10V/V) output stage (QFB) ideal for feedback applications common in crystal oscillator gain blocks. The SY89207L is fully differential, with a bandwidth > 800MHz over temperature and voltage. For applications that require output disable control, a LVPECL/LVECL/CMOS compatible enable pin (EN) will force the differential output into a fixed logic state. The SY89207L also includes a VBB reference voltage for single-ended or AC-coupled applications. The SY89207L PECL logic is 100k ECL compatible. Operation is guaranteed over the –40°C to +85°C temperature range and 3.3V nominal supply voltage range. All support documentation can be found on Micrel’s web site at www.micrel.com. APPLICATIONS ■ Oscillator timing modules BLOCK DIAGRAM QFB VCC /QFB D QHG /D /QHG VBB LEN EN Q LATCH D VEE Precision Edge is a registered trademark of Micrel, Inc. M9999-051805 [email protected] or (408) 955-1690 Rev.: B 1 Amendment: /0 Issue Date: May 2005 Precision Edge® SY89207L Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information(1) QFB 1 10 VCC /QFB 2 9 QHG Part Number Package Type Operating Range Package Marking Lead Finish D 3 8 /QHG SY89207LMI K10-1 Industrial SY89207L Sn-Pb /D 4 7 VEE SY89207LMITR(2) K10-1 Industrial SY89207L Sn-Pb 6 EN SY89207LMG K10-1 Industrial SY89207L with Pb-Free bar-line indicator Pb-Free NiPdAu SY89207LMGTR(2) K10-1 Industrial SY89207L with Pb-Free bar-line indicator Pb-Free NiPdAu VBB 5 10-Pin MSOP (K10-1) Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC electricals only. 2. Tape and Reel. PIN DESCRIPTION Pin Number Pin Name Pin Function 1, 2 QFB, /QFB Differential clock outputs for feedback path: Nominal DC gain +10. 3, 4 D, /D LVPECL, LVECL differential inputs: Internal 75kΩ pull-down resistor. 5 VBB VCC –1.32V reference voltage for single-ended inputs: It provides the switching reference for the input differential amplifier. When unused, it can be left open. For single-ended PECL applications connect VBB to /D input. For differential AC-coupled inputs, terminate each input with 50Ω to VBB as close to the input pins as possible. Always bypass the VBB pin with a 0.01µF capacitor to VCC. 6 EN Enable: LVPECL/LVECL/CMOS compatible input control with internal 25kΩ pull-up resistor. It enables/disables the high-gain output (QHG). Default state is enabled, logic HIGH, if left floating When EN pin is pulled to a logic LOW or GND, the QHG output pair will be latched, as described in the “Truth Table.” EN is synchronous so that the outputs will only be enabled/disabled when they are in the LOW state. Input threshold is VBB. 7 VEE 8, 9 QHG, /QHG 10 VCC Negative power supply: For LVECL operation, connect to negative supply. For LVPECL operation, connect to GND. Differential high-gain outputs: Nominal DC gain is greater than +200. Positive power supply: For LVECL operation, connect to VCC = 0V. For LVPECL operation, connect to 3.3V. Bypass with 0.1µF0.01µF low ESR capacitors. TRUTH TABLE EN QHG Out /QHG Out 1 Data /Data 0 Logic Low Logic High M9999-051805 [email protected] or (408) 955-1690 2 Precision Edge® SY89207L Micrel, Inc. Absolute Maximum Ratings(1) Operating Ratings(2) Power Supply Voltage (VCC – VEE) ............................ +6.0V PECL Input Voltage (VIN) .......................... 0V to VCC +0.5V Voltage Applied to Output at High State (VEE = 0V) ............................................................ –0.5V to +5.5V Output Current (IOUT) Continuous ............................................................. 50mA Surge .................................................................... 100mA Lead Temperature (soldering, 10 sec.) ..................... 220°C Storage Temperature (TS) ....................... –65°C to +150°C Supply Voltage (VIN) ................................... +3.0V to +3.8V Ambient Temperature (TA) ......................... –40°C to +85°C Junction Temperature (TJ) ........................................ 160°C Package Thermal Resistance MSOP (θJA) Still Air ........................................................... 113°C/W MSOP (ΨJB) ........................................................ 74°C/W DC ELECTRICAL CHARACTERISTICS VCC = +3.0V to +3.8V; TA = –40°C to +85°C; unless noted. Symbol Parameter VCC Power Supply Voltage ICC Power Supply Current VBB Reference Voltage IIH Input HIGH Current D, /D EN VIN = VIH (max) VIN = VCC IIL Input LOW Current D, /D EN VIN = VIL (min) VIN = GND CIN Input Capacitance EN Enable (LVPECL) (LVECL) Condition Min Typ Max Units VEE = GND VCC = GND 3.0 –3.8 3.3 –3.3 3.8 –3.0 V V 46 mA VCC = 3.8V VCC–1.26 VCC–1.32 VCC–1.38 150 100 µA µA µA µA 0.5 –300 0.75 LVECL/LVPECL/CMOS compatible V pF VEE VCC V LVPECL/LVECL DC ELECTRICAL CHARACTERISTICS VCC = +3.0V to +3.8V and VEE = 0V, VCC = 0V and VEE = –3.0V to –3.8V; TA = –40°C to +85°C; unless otherwise noted. Symbol Parameter Condition Min Typ Max Units VOH Output High Voltage 50Ω to VCC –2V 2.215 2.305 2.42 V VOL Output Low Voltage 50Ω to VCC –2V 1.470 1.595 1.745 V VIH Input HIGH Voltage 2.135 — 2.420 V VIL Input LOW Voltage 1.490 — 1.825 V VIHCMR Input High Voltage Common Mode Range 2.0 — VCC –0.8 V Note 3 Notes: 1. Permanent device damage may occur if the ratings in the “Absolute Maximum Ratings” section are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. VIHCMR is referenced to the most positive side of the differential input signal. M9999-051805 [email protected] or (408) 955-1690 3 Precision Edge® SY89207L Micrel, Inc. AC ELECTRICAL CHARACTERISTICS VCC = +3.0V to +3.8V and VEE = GND or VEE = –3.0V to –3.8V and VCC = GND; TA = –40°C to +85°C; unless noted. Symbol Parameter fMAX Maximum Frequency tpd Propagation Delay to QFB, /QFB (Diff.) (Single) 200 230 ps ps to QHG, /QHG (Diff.) (Single) 730 780 ps ps tS Condition Set-Up Time Min Typ Max Units 800 MHz Enable Pin(4) 650 ps Pin(4) 650 ps tH Hold Time Enable tJITTER Cycle-to-Cycle Jitter RMS tSKEW Duty Cycle Skew Note 5 VPP Minimum Input Swing Note 6 tr tf Output Rise/Fall Times (20% to 80%) At full output swing 0.2 5 ps 20 150 mV 250 Notes: 4. See “Timing Waveform” section. 5. Duty cycle skew is the difference between rise and fall time propagation delay through the device. 6. The device has a DC gain of 10 for Q, /Q outputs, and DC gain of 200 or higher for QHG, /QHG. See “Timing Waveform” minimum input swing. TIMING WAVEFORMS D 150mV /D Figure 1. Minimum Input Swing D tS EN tH VCC — VBB VCC — VBB Q FB Q HG Figure 2. Set-Up and Hold Timing M9999-051805 [email protected] or (408) 955-1690 4 ps ps Precision Edge® SY89207L Micrel, Inc. TERMINATION RECOMMENDATIONS +3.3V +3.3V ZO = 50Ω R1 130Ω R1 130Ω +3.3V R2 82Ω R2 82Ω Vt = VCC-2V ZO = 50Ω Figure 3. Parallel Termination–Thevenin Equivalent +3.3V +3.3V Z = 50Ω Z = 50Ω 50Ω 50Ω source 46Ω to 49Ω Rb destination C1 0.01µF (optional) Figure 4. Three-Resistor “Y–Termination” RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function Data Sheet Link SY100EL16VO 3.3V/5V 800MHz Precision PECL Amplifier with Low-Gain Feedback www.micrel.com/product-info/products/sy100el16vo.shtml SY89250V 3.3V/5V Enhanced Differential Receiver www.micrel.com/product-info/products/sy89250v.shtml M9999-051805 [email protected] or (408) 955-1690 5 Precision Edge® SY89207L Micrel, Inc. 10 LEAD MSOP (K10-1) Rev. 00 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB USA http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. M9999-051805 [email protected] or (408) 955-1690 6