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| NJM2531A Mixer and Oscillator for TV Tuner DESCRIPTION The NJM2531A is mixer/oscillator especially designed for TV tuners and consists of mixers, oscillators, IF amplifier and OSC buffer for VHF,UHF and CATV band, built into one chip. The NJM2531A packaging in SSOP16 is suitable for small-sized tuners. FEATURES * Operating Voltage 5V * Mixers, Oscillators, IF AMP and OSC buffer on chip * Bipolar Technology * Package Outline:SSOP16 PACKAGE OUTLINE NJM2531AV BLOCK DIAGRAM MIXOUT2 MIXOUT1 UHFIN2 VHFIN2 VHFIN1 UHFIN1 16 15 14 13 12 11 10 VCC UHF MIX VHF MIX IF AMP U/V SW VHF OSC UHF OSC OSC BUFF 1 VHFOSC1 2 VHFOSC2 3 VOSC 4 UHFOSC1 5 UHFOSC2 6 GND 7 OSCOUT U/V SW IFOUT 9 8 -1- NJM2531A ABSOLUTE MAXIMUM RATINGS Parameter Symbol Supply Voltage Vcc Power Dissipation PD Operating Temperature Range Topr Storage Temperature Range Tstg (TA=25C) Unit V mW C C (TA=25C) Max. Unit 5.5 V Ratings 7 *550 -20 to +75 -40 to +125 * Test IC soldered on PC board RECOMMENDED OPERATING VOLTAGE RANGE Parameter Condition Operating Voltage Symbol Vcc Min. 4.5 Typ. 5.0 ELECTRICAL CHARACTERISTICS (Note 1) Parameter Condition Operating Current VHF OSC only, No RF input Operating Current UHF OSC only, No RF input VHF OSC only Conversion Gain fRF=55.25 to 361.25MHz, -50dBm VHF OSC only Conversion Gain fRF=55.25 to 361.25MHz, -50dBm VHF OSC only 1% Cross Modulation 1 fRF=55.25 to 361.25MHz, 75dBuV fUD=fRF +1MHz, 75dBuV UHF OSC only 1% Cross Modulation 2 fRF=367.25 to 801.25MHz, 75dBuV fUD=fRF +1MHz, 75dBuV VHF OSC only Noise Figure 1 fRF=55.25 to 361.25MHz fIF=46MHz VHF OSC only Noise Figure 2 fRF=55.25 to 361.25MHz fIF=46MHz OSC Output Power flocal=101 to 847MHz Maximum IF Output flocal=55.25 to 801.25MHz Level Symbol Icc1 Icc2 Ga1 Ga2 CM1 (Vcc=5V,TA=25C, IF=45.75MHz) Min. Typ. Max. Unit 35 41 56 mA 37 43 58 mA 26 30 78 dB dB dB CM2 - 70 - dB NF1 - 13 - dB NF2 OUTosc OUTif - 10 -10 10 - dB dBm dBm (Note 1) Because AC characteristics largely depends on application circuit, these parameters are specified by the DC characteristics as shown in next page. -2- NJM2531A DC ELECTRICAL CHARACTERISTICS (VCC=Vosc=Vmix=5V,TA=25C,UHF:Vb=2.97V,VHF:Vb=2.98V) Parameter Condition Symbol Min. Typ. Max. Pin3 Current 1:UHF Vsw=2v Iosc1 4.35 9.70 Pin3 Current 2:VHF Vsw=0.5v Iosc2 3.75 8.60 Pin7 Voltage 1:UHF Vsw=2v Voscout1 3.15 4.00 Pin7 Voltage 2:VHF Vsw=0.5v Voscout2 3.15 3.85 Pin9 Voltage Vsw=2v Vifout 1.50 2.85 Vsw=2v Icc Pin10 Current 17 47.5 Vsw=2v Imixouta1 Pin11 Current 1:UHF 1.65 3.80 Pin11 Current 2:VHF Vsw=0.5v Imixouta2 1.45 3.30 Pin12 Current 1:UHF Vsw=2v Imixoutb1 1.65 3.80 Pin12 Current 2:VHF Vsw=0.5v Imixoutb2 1.45 3.30 Pin2 Current Vsw=0.5v,Vb=2.98v,1-2PinShort Ivosc 4.60 Vsw=2v,Vb=2.97v,4-5PinShort Iuosc Pin4 Current 1.30 5.70 Pin13 Voltage Vsw=0.5v Vvmixa 2.23 2.83 Pin14 Voltage Vsw=0.5v Vvmixb 2.23 2.83 Pin15 Voltage Vsw=2v Vumixa 2.22 2.82 Vsw=2v Vumixb Pin16 Voltage 2.22 2.82 Vsw=0.5v Vvosc1 Pin1 Voltage 2.70 3.30 Pin2 Voltage Vsw=0.5v Vvosc2 2.00 2.60 Pin4 Voltage Vsw=2v Vuosc1 2.00 2.60 Pin5 Voltage Vsw=2v Vuosc2 2.70 3.30 DC TEST CIRCUIT Unit mA mA V V V mA mA mA mA mA mA mA V V V V V V V V 1n 1n 1n 1n 1n 1n 1n + 1u 1n 16 UHFIN2 15 UHFIN1 14 VHFIN2 13 VHFIN1 12 MIXOUT2 11 MIXOUT1 10 VCC (Vmix) 9 IFOUT U/V SW VHFOSC1 VHFOSC2 UHFOSC1 UHFOSC2 1 2 3 1u 4 5 6 OSCOUT VOSC GND 7 8 1n 1n 1n + 1n 1n 1n 1n VHF Vsw Vb -3- NJM2531A AC TEST CIRCUIT UHF IN VHF IN IF OUT 16774B 2.2n 2.2n 2.2n 2.2n 2.2n 20p 2.2n 16 UHFIN2 15 UHFIN1 14 VHFIN2 13 VHFIN1 12 MIXOUT2 11 MIXOUT1 10 VCC (Vmix) 9 IFOUT U/V SW VHFOSC1 VHFOSC2 UHFOSC1 UHFOSC2 1 15p 51p 1T363A 2 36p 3 7p 1n 4 4p 5 GND 6 OSCOUT VOSC 7 2.2n 8 15p 27p OSC OUT HVU202A 33k 1T363A 33k 33k 1n 1n 0.5p 1n 2.2n 1.5p 2k 91p 2k VHI VLO 2k 100k VHF UHF VT VCC -4- NJM2531A TERMINAL CHARACTERISTICS No. Symbol Typ.DC Voltage (V) VHF 3.0 Equivalent Circuit 3 Function 1 VHFOSC1 1 2 VHF Oscillator 2 VHFOSC2 VHF 2.2 Oscillator Power Supply 3 5 4 3 VOSC - 4 UHFOSC1 UHF 2.2 UHF Oscillator 5 UHFOSC2 UHF 3.0 6 GND - GND 7 OSCOUT 3.5 7 OSC Output 8 8 U/V SW - UHF/VHF Select Switch UHF at Vcc VHF at GND 9 IFOUT 2.2 9 IF Output -5- NJM2531A No. 10 Symbol VCC Typ.DC Voltage (V) 12 Equivalent Circuit Function Power Supply Except for Oscillator 11 MIXOUT1 - 11 Mixer Output 12 MIXOUT2 - 13 14 VHFIN1 VHF 2.5 VHF 2.5 UHF 2.5 UHF 2.5 13 14 RF Input for VHF band VHFIN2 15 UHFIN1 15 16 RF Input for UHF band 16 UHFIN2 -6- NJM2531A TYPICAL CHARACTERISTICS Vcc=5V,fIF=45.75MHz,TA=25C C O N V E R TION G AIN v sR F F R EQ U E NC Y 60 15 R F IN P U T L EV E L v sIF O U TP U T L E V EL 10 50 IF OUTP UT LE V EL [dBm] CONVE RTION GAIN [dB] 5 40 UH F VHF _Lo w 30 V HF _Hi 0 -5 20 -1 0 10 -1 5 fRF= 80 1.25M H z (UHF) 0 0 20 0 40 0 60 0 800 -2 0 -6 0 -5 0 -4 0 -3 0 -2 0 -1 0 R F IN P UT L E V EL [dB m ] 0 10 20 RF F R E QU E N CY [M Hz ] 90 1 % XM v sR F F R E Q U E N CY f u nd = fR F + 1M H z ,p u n d= p R F NO ISE F IG U R E v sR F F R EQ U E N C Y 20 18 16 85 80 V HF _Low V HF _Low VHF _Hi 14 12 V HF _Hi 1 % X M [d BuV ] 75 UH F UHF 70 NF [dB] 10 8 6 65 60 4 55 2 0 50 0 200 400 600 800 0 20 0 40 0 600 800 R F F R E Q U E N C Y [M H z ] R F F R E Q U E NC Y [M H z ] -7- MEMO [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. |
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