TAT8857 CATV Doubler – Hybrid RFIC Applications CATV Line Amplifiers CATV System Amplifiers Distribution Nodes Green Applications SOIC-16 Wide Package Product Features Functional Block Diagram 75 Ω, 40 – 1000 MHz Bandwidth GaAs pHEMT & MESFET Technology 21 – 27 dB configurable gain Integrated linearization Flexible bias voltage and current for optimum efficiency SOIC-16 Wide Package General Description Pin Configuration The TAT8857 is a cost effective 75 Ω RFIC Amplifier designed for use in Doubler CATV applications up to 1000 MHz. It works with readily available SMT baluns and transformers to provide a highly flexible low cost replacement for traditional hybrids. Gain of the TAT8857 may be easily adjusted by varying external components, allowing for a family of Doubler solutions to be developed from a single RFIC. The TAT8857 provides integrated linearization to improve the 3rd order distortion performance. Pin # Symbol Pin # Symbol 1 2 3 4 5 6 7 8 9 OUT 1A LIN ADJ A IN 1A BIAS 1A BIAS 1B IN 1B LIN ADJ B OUT 1B BIAS 2B 10 11 12 13 14 15 16 17 IN 2B OUT 2B GATE B GATE A OUT 2A IN 2A BIAS 2A GND The TAT8857 may be protected against transient surges with the TQP200002 and an output high pass filter network. Consult TriQuint for discussion. The TAT8857 supports traditional 24 V and 12 V supply voltages. Bias current may be adjusted to suit particular requirements with standard or active biasing approaches. Consult TriQuint for further discussion. Ordering Information Part No. TAT8857 TAT8857-EB Description RFIC evaluation board Standard T/R size = 1000 pieces on a 7” reel. Data Sheet: Rev C 06-05-12 © 2012 TriQuint Semiconductor, Inc. - 1 of 8 - Disclaimer: Subject to change without notice Connecting the Digital World to the Global Network ® TAT8857 CATV Doubler – Hybrid RFIC Specifications Absolute Maximum Ratings Recommended Operating Conditions Parameter Rating Parameter Storage Temperature -65 to 150 oC Vcc Icc Operation of this device outside the parameter ranges given above may cause permanent damage. Min Typ 24 350 Max Units V mA Electrical specifications are measured at specified test conditions. Specifications are not guaranteed over all recommended operating conditions. Electrical Specifications Test conditions unless otherwise noted: 25ºC case temp, +24V Vsupply Parameter Operational Frequency Range Test Frequency Gain Input Return Loss Output Return Loss Output P1dB at 500 MHz Output IP3 CTB CSO CIN XMOD Noise Figure Vbias Idd Thermal Resistance (jnc. to case) jc Conditions Min Typical 40 25 18 17 31 52 -73 -74 60 -68 4.0 24 350 3.4 See Note 1 See Note 2 See Note 2 See Note 2 See Note 2 See Note 3 Max Units 1000 MHz MHz dB dB dB dBm dBm dBc dBc dB dBc dB V mA o C/W Notes: 1. 100 MHz tone spacing, tone 1 at 225 MHz, tone 2 at 325 MHz, low and high side intermod products. 2. 79ch. NTSC + QAM (6dB offset) to 1003.25MHz, 13dB uptilt from 55.25MHz to 1003.25MHz, 40dBmV/ch at 55.25 MHz and the equivalent of 53 dBmV/ch at 1003.25 MHz. 3. Active biasing in easily implemented with traditional dual-pnp approaches. Biasing at 12 V is also possible. Data Sheet: Rev C 06-05-12 © 2012 TriQuint Semiconductor, Inc. - 2 of 8 - Disclaimer: Subject to change without notice Connecting the Digital World to the Global Network ® TAT8857 CATV Doubler – Hybrid RFIC Application Circuit 40-1000 MHz J1 L20 910nH +24v Vbias GND R7 180 L9 82nH C24 .033uF C9 82pF C25 .033uF R18 2.7K Vgate C7 .01uF R3 390 C13 0.01uF R1 27k R9 100 C11 0.01u 1 R19 2K L15 R20 33 L11 470nH C27 0.7pF L5 15nH C15 2.2pF 9nH 16 BIAS 2A R5 8.09k2 15 UPPER A L13 R13 27nH 1.3k R15 43 C17 0.5pF LIN ADJ A C3 .01uF MABACT0051 3 4 1 RF IN 2 1 3 C5 1.8pF L7 R21 5.1 600 14 1 2 1 2 5.1 C4 .01uF C6 1.8pF L8 600 8857D R6 8.09k BIAS 1B 6 R11 18 8.2nH 1 12 11 7 SEC OUT2 IN R14 27nH 1.3k GND 1 4 MABA-007681 -CT2010 L18 L14 8.2nH C2 .01uF PRI 3 R12 18 10 L30 3.9nH 2 to 1 BALUN OUT1 2 Vgate GATE B LOWER B 2 L19 600 GATE A TAT8857F3 5 T1 13 U1 BIAS 1A 2 3 L17 T2 LOWER A 4 Vbias RF OUT C22 .01uF LIN ADJ B UPPER B 8 L6 15nH 9 BIAS 2B 0.5pF C18 C28 0.7pF L12 470nH R2 R4 390 43 R16 27k R10 100 C8 .01uF R8 180 Data Sheet: Rev C 06-05-12 © 2012 TriQuint Semiconductor, Inc. L10 82nH R21 33 C12 0.01u L16 9nH C14 0.01uF 2.2pF C16 C10 82pF - 3 of 8 - Disclaimer: Subject to change without notice Connecting the Digital World to the Global Network ® TAT8857 CATV Doubler – Hybrid RFIC Typical Performance 40-1000 MHz Notes: 1. 25ºC case temp, 24V supply,. 2. 79ch. NTSC + QAM (6dB offset) to 1003.25MHz, 13dB uptilt from 55.25MHz to 1003.25MHz, 40dBmV/ch at 55.25 MHz and the equivalent of 53 dBmV/ch at 1003.25 MHz Gain vs. Frequency 30 0 29 26 25 24 +85°C +25°C −40°C 23 22 21 200.00 400.00 600.00 -10 +85°C +25°C −40°C -15 -20 -25 -30 -35 0.00 800.00 1000.00 1200.00 200.00 Frequency (MHz) 400.00 600.00 7 34 Noise Figure vs. Frequency 30 +85°C +25°C −40°C 4 3 +85°C +25°C −40°C 2 1 26 200.00 400.00 600.00 0 0.00 800.00 1000.00 1200.00 200.00 Frequency (MHz) 600.00 40 0.00 800.00 1000.00 1200.00 -60 -85 -75 +85°C +25°C −40°C -80 -85 200.00 300.00 400.00 500.00 600.00 Frequency (MHz) Data Sheet: Rev C 06-05-12 © 2012 TriQuint Semiconductor, Inc. XMOD (dBc) -70 100.00 100.00 -90 0.00 100.00 200.00 300.00 400.00 Frequency (MHz) - 4 of 8 - 200.00 300.00 400.00 500.00 600.00 500.00 600.00 XMOD vs. Frequency -50 -70 -90 0.00 +85°C +25°C −40°C Frequency (MHz) -55 CSO (dBc) CTB (dBc) 400.00 -65 +85°C +25°C −40°C 800.00 1000.00 1200.00 45 -65 -80 600.00 55 50 CSO vs. Frequency -60 -75 400.00 CIN vs. Frequency Frequency (MHz) CTB vs. Frequency -60 200.00 60 CIN (dB) NF (dB) P1dB (dBm) 31 25 0.00 -30 65 5 32 27 -25 70 6 28 -20 Frequency (MHz) 33 29 -15 -35 0.00 800.00 1000.00 1200.00 +85°C +25°C −40°C -10 Frequency (MHz) P1dB vs. Frequency 35 Output Return Loss vs. Frequency -5 Output Return Loss (dB) Input Return Loss (dB) 27 Gain (dB) 0 -5 28 20 0.00 Input Return Loss vs. Frequency 500.00 +85°C +25°C −40°C -65 -70 -75 600.00 -80 0.00 100.00 200.00 300.00 400.00 Frequency (MHz) Disclaimer: Subject to change without notice Connecting the Digital World to the Global Network ® TAT8857 CATV Doubler – Hybrid RFIC Detailed Device Description The TAT8857 is similar to other parts offered on the market; it contains two separate amplifiers. A major difference is the TAT8857 allows much flexibility to set gain and bias to cover multiple applications without an additional stage. This makes it ideal for green designs. It uses a cost effective high voltage MESFET technology (designed for CATV) and a pHEMT process (developed for high-volume applications). On-chip linearization is also utilized. +24v Bias Current Adjustment GND R7 180 L9 82nH C9 82pF C7 .01uF R3 390 C13 0.01uF R1 27k R9 100 C11 0.01u R20 33 L11 470nH C27 0.7pF L5 15nH C15 1 16 BIAS 2A R5 8.09k2 15 UPPER A L13 R13 27nH 1.3k LIN ADJ A Bias current is determined by 2 settings: MABACT0051 1. Size of DC feedback resistors - decreasing R1 & R2 will increase IDD 2. Tail resistors - decreasing R21 will T1 increase IDD, but lead to wider variationsRF C3 .01uF 3 4 1 Active biasing schemes are possible but not necessary for most applications. IN 2 1 3 C5 1.8pF L7 R21 5.1 600 14 LOWER A 1 4 2 1 2 5.1 C4 .01uF C6 1.8pF L8 600 8857D R6 8.09k BIAS 1B 6 L19 600 GATE A TAT8857F3 5 3 13 U1 BIAS 1A 2 R11 18 1 12 11 LOWER B 7 R12 18 10 L14 R14 27nH 1.3k LIN ADJ B UPPER B 8 L6 15nH Best performance is with IDD = 350mA 9 BIAS 2B C28 0.7pF L12 470nH R2 R4 390 27k R10 100 C8 .01uF R8 180 L10 82nH C14 0.01uF C10 82pF The TAT8857 has two amplifiers which can be configured to split a 24 V supply (and share the same current) or both amplifiers can be biased from a 12V supply and draw current independently. © 2012 TriQuint Semiconductor, Inc. - 5 of 8 - R21 33 C12 0.01u Voltage Biasing: 24V and 12V Data Sheet: Rev C 06-05-12 2 Vga GATE B Disclaimer: Subject to change without notice Connecting the Digital World to the Global Network ® 2.2pF C16 L9 TAT8857 CATV Doubler – Hybrid RFIC In the 24V case the voltage split ratio is left to the customer and is set by Vgate. In 24v applications, no capacitance should be put on Vgate; this prevents a turn-on over-voltage condition from damaging the output FET. J1 Vbias GND 82nH C24 .033uF C9 82pF C25 .033uF R18 2.7K Voltage divider should be done with same or lower resistor values to prevent gate leakage currents in the output FET from affecting Vgate. Vgate uF C13 0.01uF R9 100 C15 2.2pF C11 0.01u 1 R19 2K L15 R20 33 L11 470nH pF 9nH 16 BIAS 2A 8.09k2 600 L20 910nH +24v 15 UPPER A L13 R13 27nH 1.3k R15 43 C17 0.5pF LIN ADJ A 3 14 4 2 600 6 .09k 7 R11 18 8.2nH 8857D BIAS 1B 1 12 SEC 2 11 IN PRI 3 OUT2 L14 R14 27nH 1.3k 8.2nH C2 .01uF 1 GND 4 MABA-007681 -CT2010 L18 R12 18 10 L30 3.9nH 2 to 1 BALUN OUT1 Vgate GATE B LOWER B 2 L19 600 GATE A TAT8857F3 5 2 13 U1 BIAS 1A L17 T2 LOWER A Vbias RF OUT C22 .01uF LIN ADJ B UPPER B 8 9 L12 470nH R10 100 R21 33 C12 0.01u uF L10 82nH 0.5pF BIAS 2B 7pF k 43 C18 Additional information can R16 be requested from TriQuint Applications Engineering, [email protected]. L16 9nH C14 0.01uF 2.2pF C16 C10 82pF Data Sheet: Rev C 06-05-12 © 2012 TriQuint Semiconductor, Inc. - 6 of 8 - Disclaimer: Subject to change without notice Connecting the Digital World to the Global Network ® TAT8857 CATV Doubler – Hybrid RFIC Mechanical Information Package Information and Dimensions This package is lead-free/RoHS-compliant. The plating material on the leads is 100% Matte Tin. It is compatible with both lead-free (maximum 260 °C reflow temperature) and lead (maximum 245 °C reflow temperature) soldering processes. The TAT8857 will be marked with an “TAT8857” designator with a lot code marked below the part designator. The “Y” represents the last digit of the year the part was manufactured, the “XXXX” is an auto-generated number and “Z” refers to a wafer number in a lot batch. Mounting Configuration All dimensions are in millimeters (inches). Angles are in degrees. Notes: 1. A heatsink underneath the area of the PCB for the mounted device is strictly required for proper thermal operation. Damage to the device can occur without the use of one. 2. Ground / thermal vias are critical for the proper performance of this device. Vias should use a .xxmm (#xx / .0xxx”) diameter drill and have a final plated thru diameter of .xx mm (.0xx”). 3. Add as much copper as possible to inner and outer layers near the part to ensure optimal thermal performance. Data Sheet: Rev C 06-05-12 © 2012 TriQuint Semiconductor, Inc. - 7 of 8 - Disclaimer: Subject to change without notice Connecting the Digital World to the Global Network ® TAT8857 CATV Doubler – Hybrid RFIC Product Compliance Information ESD Information Solderability Compatible with the latest version of J-STD-020, Lead free solder, 260° ESD Rating: Value: Test: Standard: This part is compliant with EU 2002/95/EC RoHS directive (Restrictions on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment). Class III Passes 500 V min. Charged Device Model (CDM) JEDEC Standard JESD22-C101 MSL Rating Level 3 at +260 °C convection reflow The part is rated Moisture Sensitivity Level <xy> at 260°C per JEDEC standard IPC/JEDEC J-STD-020. Contact Information For the latest specifications, additional product information, worldwide sales and distribution locations, and information about TriQuint: Web: www.triquint.com Email: [email protected] Tel: Fax: +1.707.526.4498 +1.707.526.1485 For technical questions and application information: Email: [email protected] Important Notice The information contained herein is believed to be reliable. TriQuint makes no warranties regarding the information contained herein. TriQuint assumes no responsibility or liability whatsoever for any of the information contained herein. TriQuint assumes no responsibility or liability whatsoever for the use of the information contained herein. The information contained herein is provided "AS IS, WHERE IS" and with all faults, and the entire risk associated with such information is entirely with the user. All information contained herein is subject to change without notice. Customers should obtain and verify the latest relevant information before placing orders for TriQuint products. The information contained herein or any use of such information does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other intellectual property rights, whether with regard to such information itself or anything described by such information. TriQuint products are not warranted or authorized for use as critical components in medical, life-saving, or life-sustaining applications, or other applications where a failure would reasonably be expected to cause severe personal injury or death. Data Sheet: Rev C 06-05-12 © 2012 TriQuint Semiconductor, Inc. - 8 of 8 - Disclaimer: Subject to change without notice Connecting the Digital World to the Global Network ®