HMC914LP4E

HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Features supports Data rates up to 12.5 gbps Differential small signal gain: 32 dB programmable loss-of-signal Detection (lOs) automatic Output Disable mode adjustable Output Voltage swing up to 750 mVp-p Differential integrated DC Offset Correction received signal strength indicator (rssi) Output 24 lead plastic 4x4mm smt package: 16mm² Typical Applications the HmC914lp4e is ideal for: • sOnet/sDH-Based transmission systems • OC-192 fiber Optic modules • 10 gigabit ethernet • 8x and 10x fiber Channel • Wideband rf gain Block 6 limiting amplifiers - smt Functional Diagram General Description HmC914lp4e is a limiting amplifier designed to support data transmission rates up to 12.5 gbps. the amplifier can operate over a wide range of input voltage levels and provides constant-level differential output swing. HmC914lp4e features a loss of signal (lOs) indicator output where the input signal amplitude threshold level can be adjusted using the lOstH pin. HmC914lp4e also features an output level control pin, VaC, which allows for loss compensation or for output signal level optimization. Differential output signal swing can be adjusted up to 750 mVp-p. an integrated DC offset compensation is also provided on chip. the HmC914lp4e provides an analog rssi output voltage which is proportional to input signal amplitude. all single-ended input signals are terminated with 50 ohms to +3.3V on-chip, and may be either aC or DC coupled. the outputs of the HmC914lp4e may be operated either differentially or single-ended. the HmC914lp4e operates from a single +3.3V DC supply and is available in a plastic roHs compliant 4x4 mm smt package. Electrical Specifications, TA = +25° C, Vcc = +3.3V parameter power supply Voltage, Vcc supply Current, icc Output amplitude Control Voltage, VaC Differential small signal gain maximum Data rate small signal Bandwidth, f3dB-H low frequency Cut-off, f3dB-l 3-dB cutoff frequency 100 nf off chip cap is used VaC = 1V 12.5 9.5 10 VaC = 1V 0.4 32 Conditions min. 3 typ. 3.3 47 2.2 max. 3.6 Units V ma V dB gbps gHz kHz 6-1 F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Electrical Specifications (Continued) parameter input return loss, s11 Output return loss, s22 input sensitivity [1] maximum input swing adjustable Data Output swing range Output p1dB [2] rise time, tr [3] fall time, tf [3] additive rms jitter, Jd [4] [2] Conditions Up to 12 gHz Up to 12 gHz VaC = 1V VaC = 1V VaC = 0.4V - 2.2V @ 5 gHz, VaC = 1V VaC = 1V, %20 to %80 VaC = 1V, %80 to %20 VaC = 1V @ 5 gHz @ 8 gHz min. 12 11 typ. max. Units dB dB 15 1200 240 -9.5 29 29 0.3 3.8 3.6 2 0 2 0 Vcc 0.8 Vcc 0.8 20 380 63 110 2 5.8 4.84 3.3 2.65 2.7 4.8 12.2 750 mVp-p mVp-p diff mVp-p diff dBm ps ps ps nV/rtHz nV/rtHz V V input referred voltage noise DisaBle input HigH Voltage, ViH DisaBle input lOW Voltage, Vil aODWnenB input HigH Voltage, ViH aODWnenB input lOW Voltage, Vil 6 limiting amplifiers - smt 6-2 V V mV mV mV mV dB dB dB V V mV/V lOs assert threshold level [5] rtH = 80 kOhm between lOstH and gnD, single-ended rtH = 8.5 kOhm between lOstH and VCC, single-ended assert, lOstH internally set, single-ended deassert, lOstH internally set, single-ended rtH between lOstH and VCC lOs assert/Deassert threshold level [5] lOs Hysteresis [5][6] rtH between lOstH and gnD lOstH internally set 1.82 kOhm to VCC (rlOs) 1.82 kOhm to VCC (rlOs) lOs Output HigH Voltage lOs Output lOW Voltage rssi sensitivity [1] signal-ended input signal level for limited output [2] single-ended output [3] Data amplitude: Differential 200 mVp-p, Data rate: 10 gbps prBs 223 -1 pattern [4] Data amplitude: Differential 200 mVp-p, Data rate: 10 gbps 10101... pattern [5] see application notes for detailed information [6] lOs Hysteresis=20*log(lOs deassert/lOs assert) F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Differential Gain & Return Loss vs. Frequency [1] [2] 40 30 20 RESPONSE (dB) S21 S11 S22 Differential Gain vs. Frequency & Temperature [1] [2] 50 40 30 GAIN (dB) 20 10 0 -10 10 0 -10 -20 -30 -40 0 2 4 6 +25C +85C -40C 8 10 12 0 2 4 6 8 10 12 6 limiting amplifiers - smt 60 DC CURRENT (mA) 50 FREQUENCY (GHz) FREQUENCY (GHz) DC Current vs. Supply Voltage [1] [3] Differential Output Swing vs. Supply Voltage [1] [3] 600 DIFFERENTIAL VOLTAGE (mVp-p) 550 500 40 +25C +85C -40C 450 +25C +85C -40C 400 30 3 3.1 3.2 3.3 3.4 3.5 3.6 350 3 3.1 3.2 3.3 3.4 3.5 3.6 SUPPLY VOLTAGE Vcc (V) SUPPLY VOLTAGE Vcc (V) DC Current vs. VAC [2] [3] 70 Differential Output Swing vs. VAC [2] [3] 800 DIFFERENTIAL VOLTAGE (mVp-p) DC CURRENT (mA) 60 600 50 400 40 +25C +85C -40C 200 +25C +85C -40C 30 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 0 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 CONTROL VOLTAGE VAC (V) CONTROL VOLTAGE VAC (V) [1] VaC = 1V [2] VCC=3.3V [3] input Data: Differential 200 mVp-p 10 gbps nrZ prBs 223 -1 pattern 6-3 F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Rise Time vs. VAC [1] [2] 50 Fall Time vs. VAC [1] [2] 50 40 FALL TIME (ps) RISE TIME (ps) 40 30 30 20 +25C +85C -40C 20 +25C +85C -40C 10 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 10 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 CONTROL VOLTAGE VAC (V) CONTROL VOLTAGE VAC (V) 0.5 4 0.4 RMS JITTER (ps) RMS JITTER (ps) 3 +25C +85C -40C 0.3 2 0.2 +25C +85C -40C 0.1 1 0 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 0 1 CONTROL VOLTAGE VAC (V) 10 100 SINGLE-ENDED Vin (mVp-p) 1000 Differential Output Swing vs. Single-Ended Input Voltage [1] [4] [5] 1000 DIFFERENTIAL VOLTAGE (mVp-p) RSSI Voltage vs. Single-Ended Input Voltage [1] [4] [5] 2.5 2 RSSI (V) +25C +85C -40C 1.5 +25C +85C -40C 100 1 10 100 1000 1 0 100 SINGLE-ENDED Vin (mVp-p) 200 300 400 SINGLE-ENDED Vin (mVp-p) 500 [1] VCC = 3.3V [2] input Data: Differential 200 mVp-p 10 gbps nrZ prBs 223 -1 pattern [3] input Data: Differential 200 mVp-p 10 gbps 10101... pattern [4] VaC = 1V [5] frequency = 5 gHz F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com 6-4 limiting amplifiers - smt RMS Jitter vs. VAC [1] [3] RMS Jitter vs. Single-Ended Input Voltage [1] [4] [5] 6 HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Absolute Maximum Ratings power supply Voltage (VCC) input Voltage (inp-inn) Output amplitude Control Voltage (VaC) power down input voltage (DisaBle) auto power down enable voltage (aOpDWnenB) loss of signal threshold programming current (lOstH) Channel temperature Continuous pdiss (t = 85 °C) (derate 13.6 mW/°C above 85 °C ) 3.8V to -0.5V 1V to 3.3V 0 to 2.4V 0 to 3.6V 0 to 3.6V ±3 ma 125 °C 0.54 W 73.5 °C/W -55 to 125 °C -40 to +85 °C 6 limiting amplifiers - smt thermal resistance (channel to package bottom) storage temperature Operating temperature 11.25 Gbps Differential Output Eye Diagram for 200 mVp-p Input 10 Gbps Differential Output Eye Diagram for 10 mVp-p Input Current eye amp rise time fall time p-p Jitter 481 mV 30.00 ps 28.67 ps 9.333 ps minimum 481 mV 30.00 ps 28.67 ps 6.667 ps maximum 482 mV 31.33 ps 29.33 ps 9.333 ps total meas 83 83 83 83 eye amp rise time fall time p-p Jitter Current 358 mV 36.00 ps 35.33 ps 15.333 ps minimum 358 mV 36.00 ps 34.67 ps 12.000 ps maximum 358 mV 37.33 ps 36.00 ps 15.333 ps total meas 81 81 81 81 time scale: 30 ps/div amplitude scale: 100 mV/div test Conditions: VCC = 3.3V, VaC = 1V Data input: Differential 200 mVp-p 11.25 gbps nrZ prBs 223 -1 pattern time scale: 30 ps/div amplitude scale: 90 mV/div test Conditions: VCC = 3.3V, VaC = 1V Data input: Differential 10 mVp-p 10 gbps nrZ prBs 223 -1 pattern 6-5 F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Outline Drawing 6 limiting amplifiers - smt 6-6 nOtes: 1. leaDframe material: COpper allOY 2. 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Package Information part number HmC914lp4e package Body material roHs-compliant low stress injection molded plastic lead finish 100% matte sn msl rating msl1 [2] package marking [1] H914 XXXX [1] 4-Digit lot number XXXX [2] max peak reflow temperature of 260 °C F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Pin Descriptions pin number function Description interface schematic 1 lOs loss of signal indicator. Open collector output. requires an external resistor to VCC. this output sinks 500 ua DC current when input is lower than the threshold. 2, 5, 8, 9, 11, 12, 14, 17 package Base gnD signal and supply ground. 6 limiting amplifiers - smt 3, 4 inp, inn Differential (inp-inn) or single-ended (inp) data inputs. 6 DisaBle Disables output buffer. internally set to VCC. Data outputs are enabled when DisaBle is high or floating. 7 aODWnenB enables the automatic output disable feature. if asserted, outputs automatically disable when the input signal is below than the programmed loss threshold. active low. internally set to VCC. Outputs enable when the input signal returns its desired swing level. 10 VaC Output amplitude Control. internally set for 500 mV differential p-p. 13 n/C the pins are not connected internally; however, all data shown herein was measured with these pins connected to rf/DC ground externally. 6-7 F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Pin Descriptions (Continued) pin number function Description interface schematic 15, 16 Qn, Qp Differential data outputs 18, 21, 22 Vcc power supply (+3.3V) 19, 20 Cn, Cp filter capacitor for offset correction. 100 nf should be connected between these pins. 6 limiting amplifiers - smt 6-8 23 rssi received signal strength Output. 24 lOstH loss of signal threshold setting input. User programmable with resistor to VCC or gnD. F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Evaluation PCB 6 limiting amplifiers - smt List of Materials for Evaluation PCB 128915 [1] item J1 - J3 J4 - J7 tp1 - tp5 C1 - C2 C3, C5, C6, C8, C10, C12 C4, C7, C9, C11, C13 C14 - C16 r1 - r2 r3 - r4 r5 r6 D1 Q1 Description 4 pin DC Connector sma Connector DC pin 100 nf Capacitor, 0402 pkg. 100 nf Capacitor, 0402 pkg. 1 nf Capacitor, 0402 pkg. 4.7 µf Capacitor, tantalum 4.75 kOhm resistor, 0402 pkg. 0 Ohm resistor, 0402 pkg. 1.82K Ohm resistor, 0402 pkg. 390 Ohm resistor, 0402 pkg. leD pnp transistor item U1 pCB [2] Description HmC914lp4e limiting amplifier 128913 evaluation pCB [1] reference this number when ordering complete evaluation pCB [2] Circuit Board material: arlon 25fr or rogers 4350 the circuit board used in the application should use rf circuit design techniques. signal lines should have 50 Ohm impedance while the package ground leads and exposed paddle should be connected directly to the ground plane similar to that shown. a sufficient number of via holes should be used to connect the top and bottom ground planes. the evaluation circuit board shown is available from Hittite upon request. 6-9 F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Application Circuit 6 limiting amplifiers - smt F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com 6 - 10 HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE Application Information Loss of Signal and Setting the Input Signal Threshold the HmC914lp4e features an input signal level monitoring over a broad range. en external resistor is used at lOstH pin to program the input signal amplitude threshold for generating the lOs output indicator. When this pin is kept floating lOstH level is set internally to single-ended 63 mVp-p. lOs is an open collector output suitable for wired-Or connection for parallel alarm signals; it requires an external pull-up resistor, rlOs. if the input signal level drops below the asserted threshold level then, lOs output DC voltage goes low. it goes high only when the input level exceeds the upper hysteresis threshold level. When lOstH pin is floating then the de-assert level will be single-ended 110 mVp-p. if this function is not required, the lOs output can be left floating. 6 limiting amplifiers - smt if input threshold value is desired to be higher than 63 mVp-p then an external rtH resistor should be connected between lOstH pin and VCC. Desired threshold value can be obtained by changing the value of the resistor rtH as shown in the figures below. LOS Assert/Deassert Voltage vs. Rth 400 SINGLE-ENDED Vin (mVp-p) SINGLE-ENDED Vin (mVp-p) 5 LOS Hysteresis vs. Rth 300 LOS assert LOS deassert 4 3 200 2 100 1 Hysteresis = 20*log{LOS deassert/LOS assert} 0 0 100 200 300 RESISTOR (kOhm) 400 500 0 0 100 200 300 RESISTOR (kOhm) 400 500 6 - 11 F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com HMC914LP4E v02.0311 12.5 Gbps LIMITING AMPLIFIER w/ LOSS OF SIGNAL FEATURE if input threshold value is desired to be lower than 63 mV down to 20 mVp-p then an external rtH resistor should be connected between lOstH pin and gnD. Desired threshold value can be obtained by changing the value of the resistor value as shown in the figures below. 6 120 SINGLE-ENDED Vin (mVp-p) SINGLE-ENDED Vin (mVp-p) 100 80 60 40 20 0 0 100 200 300 RESISTOR (kOhm) 400 500 LOS assert LOS deassert 15 10 5 Hysteresis = 20*log{LOS deassert/LOS assert} 0 0 100 200 300 RESISTOR (kOhm) 400 500 Automatic Output Disable the HmC914lp4e has two different disable features; one is manual and other is automatic. DisaBle pin provides manual control over the output. DisaBle pin is a CmOs input and active “low”. there is an integrated pull-up resistor to VCC at this input. if logic low is applied to this input, differential data outputs Qp / Qn are forced to VCC ensuring that no signal. if this input is left floating or logic high is applied then data outputs are enabled. Disable supply current when DisaBle=0 is 32ma. automatic disable mode is activated by aODWnenB CmOs input. this input is active “low”. to activate the automatic output disable mode logic “0” should be applied. When it is activated and if the input signal is below than the programmed loss threshold, differential outputs automatically goes to VCC and disabled. Outputs start toggling for normal operation when the input signal returns to its desired swing level. Disable supply current when aODWnenB =0 is 40ma. F or price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com 6 - 12 limiting amplifiers - smt LOS Assert/Deassert Voltage vs. Rth LOS Hysteresis vs. Rth