ACA2408 870 MHz, 34 dB Gain CATV Push-Pull Line Amplifier PRELIMINARY DATA SHEET - Rev 1.0 FEATURES • • • • 34dB Gain Very Low Distortion Stable with High VSWR Load Conditions Monolithic Design for Consistent Performance Part-to-Part • • Low DC Power Consumption Surface Mount Package Compatible with Automatic Assembly Low Cost Alternative to Hybrids • APPLICATIONS • Line Extenders, Apartment House Amplifiers, System Amplifiers, Distribution Nodes S7 Package 16 Pin Wide Body SOIC with Heat Slug PRODUCT DESCRIPTION The ACA2408 is a highly linear, monolithic GaAs RF amplifier that has been developed to replace, in new designs, standard CATV hybrid amplifiers. Offered in a convenient surface mount package, the MMIC consists of two pairs of parallel amplifiers that are optimized for exceptionally low distortion and noise figure. A hybrid equivalent that provides flat gain response and excellent input and output return loss over the 40 to 870 MHz CATV downstream band is formed when one ACA2408 is cascaded between two appropriate transmission line baluns. 1A RF Input 2A 1:1 1:1 RF Output 1B 2B ACA2408 Figure 1: Hybrid Application Diagram 07/2003 ACA2408 1 GND GND 16 2 2A IN 1A OUT 15 3 GND Bias 1A 14 4 1A IN 2A OUT 13 5 1B IN 2B OUT 12 6 I SET Bias 1B 11 7 2B IN 1B OUT 10 8 GND GND 9 Figure 2: Pin Out Table 1: Pin Description 2 PIN NAME 1 GND 2 DESCRIPTION PIN NAME Ground 16 GND Ground 2AIN Amplifier 2A Input 15 1AOUT Amplifier 1A Output 3 GND Ground 14 Bias 1A Bias for 1A Amplifier 4 1AIN Amplifier 1A Input 13 2AOUT Amplifier 2A Output and Supply 5 1BIN Amplifier 1B Input 12 2BOUT Amplifier 2B Output and Supply 6 ISET Current Adjust 11 Bias 1B Bias for 1B Amplifier 7 2BIN Amplifier 2B Input 10 1BOUT Amplifier 1B Output 8 GND Ground 9 GND Ground PRELIMINARY DATA SHEET - Rev 1.0 07/2003 DESCRIPTION ACA2408 ELECTRICAL CHARACTERISTICS Table 2: Absolute Mimimum and Maximum Ratings PARAMETER MIN MAX UNIT Supply (pins 12, 13) 0 +28 VDC RF Power at Inputs (pins 4, 5) - +55 dBmV -65 +150 °C Soldering Temperature - +260 °C Soldering Time - 5.0 Sec Storage Temperature Stresses in excess of the absolute ratings may cause permanent damage. Functional operation is not implied under these conditions. Exposure to absolute ratings for extended periods of time may adversely affect reliability. Notes: 1. Pins 2, 4, 5 and 7 should be AC-coupled. No external DC bias should be applied. 2. Pin 6 should be AC-grounded and/or pulled to ground through a resistor for current control. 3. Pins 11 and 14 are bias feeds for input amplifiers 1A and 1B. No external DC bias should be applied. 4. Pins 10 and 15 receive DC bias directly from pins 11 and 14. Table 3: Operating Ranges PARAMETER MIN TYP MAX UNIT Supply: VDD (pins 12, 13) - +24 - VDC Voltage at ISET (pin 6) - +3 - VDC RF Frequency 40 - 870 MHz Case Temperature -40 - +110 °C The device may be operated safely over these conditions; however, parametric performance is guaranteed only over the conditions defined in the electrical specifications. PRELIMINARY DATA SHEET - Rev 1.0 07/2003 3 ACA2408 Table 4: AC and DC Electrical Specifications (TA = +25 °C, VDD = +24 VDC) PARAMETER MIN TYP MAX UNIT Gain (1) @ 870 MHZ 33.5 34.8 - dB Cable Equivalent Slope (1) - 0 - dB Gain Flatness (1) to 870 MHZ - ±0.2 - dB Noise Figure (1) - 2.0 4.0 dB CTB (1) 110 Channels (2) - -70 -58 dBc CSO (1) 110 Channels (2) - -68 -58 dBc XMOD (1) 110 Channels (2) - -65 -55 dBc - 25 28 26 20 21 -20 -15.5 -14 - 27 24 20 17 17 Supply Current - Thermal Resistance - Input Return Loss (75 Ω system) (1) Output Return Loss (1) (75 Ω system) dB 40 to 80 MHz 80 to 160 MHz 160 to 320 MHz 320 to 640 MHz 640 to 870 MHz -20 -15.5 -14 dB 40 to 80 MHz 80 to 160 MHz 160 to 320 MHz 320 to 640 MHz 640 to 870 MHz 325 340 mA - 4.5 °C/W Notes: (1) Measured with baluns on the input and output of the device. (2) Flat output, +44 dBmV per channel. 4 COMMENTS PRELIMINARY DATA SHEET - Rev 1.0 07/2003 ACA2408 PERFORMANCE DATA Figure 3: Gain (S21) vs. Frequency (TA = +25 °C, VDD = +24 V, 75Ω system) 36.0 35.5 Gain (dB) 35.0 34.5 34.0 33.5 33.0 0 100 200 300 400 500 600 700 800 900 1000 Frequency (MHz) Figure 4: Input and Output Return Loss (S11 and S22) vs. Frequency (TA = +25 °C, VDD = +24 V, 75Ω system) 0 -5 -10 Return Loss (dB) -15 -20 -25 -30 -35 -40 S11 S22 -45 -50 0 100 200 300 400 500 600 700 800 900 1000 Frequency (MHz) PRELIMINARY DATA SHEET - Rev 1.0 07/2003 5 ACA2408 PERFORMANCE DATA Figure 5: Isolation (S12) vs. Frequency (TA = +25 °C, VDD = +24 V, 75Ω system) 0 -5 -10 Isolation (dB) -15 -20 -25 -30 -35 -40 -45 -50 0 100 200 300 400 500 600 700 800 900 1000 800 900 1000 Frequency (MHz) Figure 6: Noise Figure vs. Frequency (TA = +25 °C, VDD = +24 V) 3.0 Noise Figure (dB) 2.5 2.0 1.5 1.0 0.5 0.0 0 100 200 300 400 500 600 700 Frequency (MHz) 6 PRELIMINARY DATA SHEET - Rev 1.0 07/2003 ACA2408 PERFORMANCE DATA Figure 7: CTB vs. Frequency (110 channels, +44 dBmV output power, flat output) -40 -45 -50 CTB (dBc) -55 -60 -65 -70 -75 -80 -85 -90 0 100 200 300 400 500 600 700 800 Frequency (MHz) Figure 8: CSO vs. Frequency (110 channels, +44 dBmV output power, flat output) -40 -45 -50 CSO (dBc) -55 -60 -65 -70 -75 -80 -85 -90 0 100 200 300 400 500 600 700 800 Frequency (MHz) Figure 9: XMOD vs. Frequency (110 channels, +44 dBmV output power, flat output) -40 -45 -50 XMOD (dBc) -55 -60 -65 -70 -75 -80 -85 -90 0 100 200 300 400 500 600 700 800 Frequency (MHz) PRELIMINARY DATA SHEET - Rev 1.0 07/2003 7 ACA2408 Figure 10: CTB vs. Frequency (132 channels, +44 dBmV output power, flat output) -40 -45 -50 CTB (dBc) -55 -60 -65 -70 -75 -80 -85 -90 0 100 200 300 400 500 600 700 800 900 Frequency (MHz) Figure 11: CSO vs. Frequency (132 channels, +44 dBmV output power, flat output) -40 -45 -50 CSO (dBc) -55 -60 -65 -70 -75 -80 -85 -90 0 100 200 300 400 500 600 700 800 900 Frequency (MHz) Figure 12: XMOD vs. Frequency (132 channels, +44 dBmV output power, flat output) -40 -45 -50 XMOD (dBc) -55 -60 -65 -70 -75 -80 -85 -90 0 100 200 300 400 500 600 700 Frequency (MHz) 8 PRELIMINARY DATA SHEET - Rev 1.0 07/2003 800 900 ACA2408 APPLICATION INFORMATION Vt +24 V AC\AK 03/4 R2 C4 Input C10 L1 L3 C6 C1 L5 C8 T2 C12 T1 L6 C2 C11 C3 R3 C7 C5 Output L4 L2 R1 C9 C14 I adj 34dB 75 + +24 V C4 2 RF IN 3 C11 T1 4 C2 R1 R3 C3 GND GND 16 2AIN 1AOUT 15 Bias 1A 14 2AOUT 13 GND 1AIN 2BOUT 12 Bias 1B 11 2BIN 1BOUT 10 GND GND 9 5 1BIN 6 ISET 7 8 IDD Adjust ACA2408 (+24 V) R2 L1 C10 L3 TVS C15 C6 RF OUT C8 L5 T2 C12 L6 C9 C7 L4 L2 C5 C14 +24 V 1 C1 +24 V Vt Figure 13: Evaluation Board Layout Figure 14: Evaluation Board Schematic PRELIMINARY DATA SHEET - Rev 1.0 07/2003 9 ACA2408 Table 5: Evaluation Board Parts List REF DESCRIPTION QTY VENDOR VENDOR P/N C1, C2, C3, C6, C7, C10, C14 0.01 µF CHIP CAP 7 MURATA GRM39X7R103K50V C4, C5, C8, C9 470 pF CHIP CAP 4 MURATA GRM39X7R471K50V C11, C12 0.5 pF CHIP CAP 2 MURATA GRM36COG0R5C50 C15 47 µF ELECT CAP 1 DIGI-KEY CORP P5275-ND R1, R2 NOT USED TVS TVS 24 VOLT 600 WATT 1 DIGI-KEY CORP SMBJ24ACCCT-ND 680 nH INDUCTOR 4 COIL CRAFT 1008CS-681XKBC L5, L6, (4) 1.5 nH CHIP INDUCTOR 2 TOKO PTL2012-F1N5C R3 13 K Ω Resistor 1 DIGI-KEY CORP P13KGCT-ND CONNECTOR (1) 75 Ω N MALE PANEL MOUNT 2 PASTERNACK ENTERPRISES PE4504 Ferrite Core 2 FAIR-RITE 2843002702 MWS WIRE IND. T-2361429-20 L1, L2, L3, L4 T1, T2 (2) (BALUN) INDIUM (4) Wire Printed Circuit Board (3) 1 STANDARD PRINTED CIRC. INC. 24V2X1AC75 300 X 160 MILS 1 INDIUM CORP OF AMERICA 14996Y Notes: (1) N connector center pin should be approximately 80 mils in length. (2) T1, T2, balun: 4.5 turns thru, as shown in Figure 15. (3) Due to the power dissipation of this device, the printed circuit board should be mounted / attached to a heat sink. (4) 400 mA minimum current rating. NOTES: 1. MATERIAL: CORE: FAIR-RITE (2843002702) WIRE: MWS WIRE IND. T-23614929-20 4.5 TIMES THRU AS SHOWN Figure 15: Balun Drawing 10 PRELIMINARY DATA SHEET - Rev 1.0 07/2003 ACA2408 PACKAGE OUTLINE Figure 16: S7 Package Outline - 16 Pin Wide Body SOIC with Heat Slug PRELIMINARY DATA SHEET - Rev 1.0 07/2003 11 ACA2408 ORDERING INFORMATION ORDER NUMBER TEMPERATURE RANGE PACKAGE DESCRIPTION ACA2408S7P2 -40 to +110 ° C 16 Pin Wide Body 1,500 piece tape and reel SOIC with Heat Slug ACA2408S7P0 -40 to +110 ° C 16 Pin Wide Body Plastic tubes (50 pieces per tube) SOIC with Heat Slug COMPONENT PACKAGING ANADIGICS, Inc. 141 Mount Bethel Road Warren, New Jersey 07059, U.S.A. Tel: +1 (908) 668-5000 Fax: +1 (908) 668-5132 URL: http://www.anadigics.com E-mail: [email protected] IMPORTANT NOTICE ANADIGICS, Inc. reserves the right to make changes to its products or to discontinue any product at any time without notice. The product specifications contained in Advanced Product Information sheets and Preliminary Data Sheets are subject to change prior to a product’s formal introduction. Information in Data Sheets have been carefully checked and are assumed to be reliable; however, ANADIGICS assumes no responsibilities for inaccuracies. ANADIGICS strongly urges customers to verify that the information they are using is current before placing orders. WARNING ANADIGICS products are not intended for use in life support appliances, devices or systems. Use of an ANADIGICS product in any such application without written consent is prohibited. 12 PRELIMINARY DATA SHEET - Rev 1.0 07/2003