NEC's 870 MHz GaAs CATV MC-7845 MC-7846 POWER DOUBLER AMPLIFIER MC-7847 OUTLINE DIMENSIONS (Units in mm) FEATURES • GaAs ACTIVE DEVICES PACKAGE OUTLINE H02 • LOW DISTORTION • HIGH LINEAR GAIN: MC-7845 - GL = 18 dB MIN at f = 870 MHz MC-7846 - GL = 22 dB MIN at f = 870 MHz MC-7847 - GL = 25 dB MIN at f = 870 MHz • LOW RETURN LOSS • LOW GAIN CHANGE OVER TEMPERATURE • SPECIFIED FOR 79, 110, and 132 CHANNELS PERFORMANCE • HIGH RELIABILITY AND RUGGEDNESS: Withstands environmental extremes as well as Silicon devices (Surge, ESD, Etc.) 45.08 MAX 38.1±0.25 27.5 MAX 3.2 MAX 4.25 + 0.25 - 0.35 VDD 5 14.85 MAX 4.0±0.25 8.1 MAX 19.05±0.38 1 9 In Out 6-32 unc 2B 25.4±0.25 2 3 7 8 2.54±0.25 0.51±0.05 Gnd DESCRIPTION 4.19±0.13 NEC's MC-7845, MC-7846, and MC-7847 are GaAs MultiChip Modules designed for use as output stages in CATV applications up to 870 MHz. The only difference between these devices is gain, which is 18 dB, 22 dB, and 25 dB respectively. Because these units are GaAs devices they have low distortion, low noise figure, and low return loss across the entire frequency band. Like the previous generation of products, these devices survive such hazards as surge and ESD as well as their silicon competitors, but deliver superior performance with low DC current required. All devices are assembled and tested using fully automated equipment to maximize consistency in part to part performance, and reliability is assured by NEC's stringent quality and process control procedures. These parts come in industry compatible hybrid packages. 2.62±0.35 7 8 9 12.9 MAX 21.5 MAX 1 2 3 5 10.75 ±0.25 2.54 ±0.38 A 6.3 0.51±0.05 0.38.. A 2.5 ±0.05 APPLICATIONS • CATV HEADEND SYSTEMS • CATV OPTICAL NODES • CATV DISTRIBUTION AMPS ELECTRICAL CHARACTERISTICS (TA = 30±5 °C, VDD = 24 V, ZS = ZL = 75 Ω) SYMBOLS BW GL S Gf PART NUMBER CHARACTERISTICS Frequency Range Linear Gain Gain Slope Gain Flatness UNITS MHz dB dB dB MIN 50 18.0 0.2 – dB RLi Noise Figure 1 Noise Figure 2 Input Return Loss RLo Output Return Loss dB – – 20.0 19.0 17.5 16.0 20.0 19.0 17.5 16.0 NF dB MC-7845 TYP MAX – 870 – 19.0 0.6 1.0 – 0.6 – – – – – – – – – – 6.5 7.0 – – – – – – – – MC-7846 MIN TYP MAX 50 – 870 22.0 – 23.0 0.6 1.0 1.4 – – 0.6 MIN 50 25.0 1.0 – – – 20.0 20.0 19.0 17.0 20.0 20.0 19.0 18.0 – – 20.0 20.0 19.0 17.0 20.0 20.0 19.0 18.0 – – – – – – – – – – 6.0 6.5 – – – – – – – – MC-7847 TYP MAX – 870 – 26.0 1.4 1.8 – 0.6 – – – – – – – – – – 5.5 6.0 – – – – – – – – TEST CONDITIONS f = 870 MHz f = 40 to 870 MHz 40 to 870 MHz; Peak to Valley f = 50 MHz f = 870 MHz 40 to 160MHz 160 to 320 MHz 320 to 640 MHz 640 to 870 MHz 40 to 160MHz 160 to 320 MHz 320 to 640 MHz 640 to 870 MHz continued on next page California Eastern Laboratories MC-7845, 7846, 7847 ELECTRICAL CHARACTERISTICS, cont. (TA = 30±5 °C, VDD = 24 V, ZS = ZL = 75 Ω) SYMBOLS IDD CTB XMod CSO PART NUMBER CHARACTERISTICS Operating Current Composite Triple Beat Cross Modulation1 Composite Second Order UNITS mA dBc dBc dBc MIN 275 – – – MC-7845 TYP MAX – 375 -63 -60 -59 -55 -68 -63 MC-7846 MIN TYP MAX 275 – 375 – -63 -60 – -60 -55 – -67 -63 MIN 275 – – – MC-7847 TYP MAX – 375 -65 -60 -62 -55 -67 -63 TEST CONDITIONS RF OFF 110 Channels, VOUT = 50 dBmV at 745.25 MHz, 10 dB tilted across the band 1. Measured per US standard methods and procedures (using selective level meter). ABSOLUTE MAXIMUM RATINGS1 (TCASE= 30 °C) SYMBOLS PARAMETERS UNITS RECOMMENDED OPERATING CONDITIONS (Zs = ZL = 75Ω) RATINGS SYMBOLS PARAMETERS Supply VoltageV V 30 VDD VI Input Voltage (Single Tone)2 dBmV 65 Vi TC Operating Case Temperature °C -30 to +100 Input Voltage1, MC-7845 MC-7846 MC-7847 Storage Temperature °C -40 to +100 TC Operating Case Temperature VDD TSTG Supply Voltage Note: 1. Operation in excess of any one of these parameters may result in permanent damage. 2. Maximum single channel power applied to the input for 1 minute with no measurable degradation in performance. UNITS MIN TYP MAX 23.5 24.0 24.5 dBmV – – – 36.0 32.0 29.0 39.0 35.0 32.0 °C -30 +25 +85 Note: 1. Test Conditions: 110 Channels, 10 dB tilted across the band. ORDERING INFORMATION PART NUMBER PACKAGE QUANTITY MC-7845 7-pin special with heatsink 50pcs max/ Tray MC-7846 7-pin special with heatsink 50pcs max/ Tray MC-7847 7-pin special with heatsink 50pcs max/ Tray NOTES ON CORRECT USE RECOMMENDED SOLDERING CONDITIONS 1. The space between PC board and root of the lead should be kept more than 1 mm to prevent undesired stress on the lead and also should be kept less than 4 mm to prevent undesired parasitic inductance. This product should be soldered in the following recommended conditions. Other soldering methods and conditions than the recommended conditions are to be consulted with our sales representatives. Recommended space is 2.0 to 3.0 mm typical. 2. Recommended torque strength of the screw is 59 to 78 Ncm. 3. Form the ground pattern as wide as possible to minimize ground impedance. (to prevent undesired oscillation) All the ground pins must be connected together with wide ground pattern to decrease impedance difference. Soldering Method Soldering Conditions Condition Symbol Pin Part Heating Pin area temperature: less than 260°C1 Hour: Within 2 sec./pin – Note. 1. The point of pin part heating must be kept at a distance of more than 1.2 mm from the root of lead. Life Support Applications These NEC products are not intended for use in life support devices, appliances, or systems where the malfunction of these products can reasonably be expected to result in personal injury. The customers of CEL using or selling these products for use in such applications do so at their own risk and agree to fully indemnify CEL for all damages resulting from such improper use or sale. 07/08/2003