 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| NJM2591 100MHz INPUT 450kHz FM IF DEMODULATOR IC FOR VOICE GENERAL DESCRIPTION The NJM2591 is a wide - operating voltage, low - current FM IF demodulator IC for voice application. It includes an oscillator, mixer, limiting amplifier, quadrature detector, and active filter. The NJM2591 also has a noise detector and noise comparator with hysteresis range. PACKAGE OUTLINE NJM2591V FEATURES Wide Operating Voltage Low Operating Current Maximum Input Frequency IF Frequency Bipolar Technology Package Outline 1.8V to 9.0V 2.5mA type. at V+ =2.0V 100MHz ( reference value ) 450kHz ( standard ) SSOP16 BLOCK DIAGRAM MIX IN 16 NOISE NOISE REC DET 14 13 IF OUT 11 AF OUT 9 LPF NOISE COMP BUFFER NOISE DET IF AMP OSC NOISE AMP FILTER AMP RSSI QUAD DET GND 15 MIXER RSSI 12 QUAD 10 1 OSC IN 2 OSC OUT 3 MIX OUT 4 V+ 5 IF IN 6 DEC 7 FIL OUT 8 FIL IN Ver.2004-08-25 -1- NJM2591 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL V+ PD Topr Tstg RATINGS 10.0 300 - 30 to +85 - 40 to +125 (Ta=25C) UNIT V mW C C (Ta=25C) MIN. 1.8 TYP. 2.5 MAX. 9.0 UNIT V RECOMMENDED OPERATING CONDITION PARAMETER Supply Voltage SYMBOL V+ TEST CONDITIONS ELECTRICAL CHARACTERISTICS (Ta=25C, V+=2.0V, fmix=21.7MHz, flo=21.25MHz, fif=450kHz, fmod=1kHz, fdev=1.5kHz, unless otherwise noted.) PARAMETER Current Consumption Mixer Conversion Gain Mixer 3 rd Order Intercept Mixer Input Resistance Mixer Input Capacitance Mixer Output Resistance 12 dB S/N Audio Output Voltage Signal to Noise Ratio AM Rejection Ratio IF Amplifier Input Resistance RSSI Output Voltage 1 RSSI Output Voltage 2 Noise Detector Output Voltage Noise Detector Output Leak Current Noise Detector Level "High" Noise Detector Level "Low" SYMBOL Iccq Gmix IP3 R in M Cin M R oM 12dBS/N V od S/N AMR Rin I F Vrssi1 Vrssi2 V nedt Ileak Vth-h Vth-l V =3.0V, IF input VinIF=30dBuVEMF V+=3.0V, IF input VinIF=100dBuVEMF Isink=0.2mA Vnrec=0.6V,Vnedt=2V + TEST CONDITIONS No Signal Without filter, VinMIX=46dBuVEMF, Pin3 is terminated with 1.8k MIN. 21 1.2 - TYP. 2.5 24 96 (10) (3.2) 1.8 11 100 65 40 1.8 0.36 2.0 0.1 0 0.5 0.4 MAX. 27 2.4 130 2.4 0.52 2.6 0.5 5 0.7 - UNIT mA dB dBuVEMF k pF k dBuV mVrms dB dB k V V V uA V V IF input VinIF=80dBuVEMF IF input VinIF=80dBuVEMF IF input, AM=30% VinIF=80dBuVEMF 70 43 1.2 0.2 1.4 0.3 The values shown in parenthesis are reference values. -2Ver.2004-08-25 NJM2591 TEST CIRCUIT This test circuit allows the measurement of all parameters described in "ELECTRICAL CHARACTERISTICS". This test circuit includes some electrical switches that should be in the suitable position for the measurement of each parameter. NOISE NOISE REC DET RSSI QUAD 0.3 to 3kHz AUDIO OUT CD 3.3k AF OUT 12 11 10 9 LPF MIXER NOISE COMP BUFFER NOISE DET IF AMP NOISE AMP FILTER AMP RSSI QUAD DET 1000p 51 21.7MHz MIX IN 16 15 14 13 0.1u V + 1000p 10u 91p 0.2mA OSC 1 39p 21.25 MHz 2 3 4 10u V 0.1u 5 + 6 IF IN 0.1u 7 150k 220p 8 56p 220p 10k 5.6k 31kHz IF FILTER B A 0.1u IF SW 51 450kHz 1.8k MIX SW MIXOUT IF FILTER: CFWCA450KGFA (Murata Manufacturing Co., Ltd., JAPAN) Ceramic discriminator CD: CDBLA450KCAY24 (Murata Manufacturing Co., Ltd., JAPAN) CERAMIC DISCRIMINATOR (especially designed for NJM2591) To optimize some important performance, the following ceramic discriminator is available. For more information on this CD and 455KHz CD, please contact the CD supplier. CDBCB450KCAY70 (Murata Manufacturing Co., Ltd., JAPAN with the external capacitance Cd of 33pF (instead of 91pF) Ver.2004-08-25 -3- NJM2591 TERMINAL FUNCTION (Ta=25C, V+=2.0V) Pin No. SYMBOL EQUIVARENT CIRCUIT V+ VOLTAGE FUNCTION Local Oscillator Input and Output. Adding an external oscillator element of crystal unit or SAW resonator forms Colpitts - type oscillator. Output of an external oscillator circuit can also input to pin1 or pin2. 1 OSC IN 1 2 22k 1.97V 2 OSC OUT 130uA 1.27V GND V+ Mixer Output. Typical input impedance is 1.8k. 3 MIX OUT 1.6k 558mV 3 220uA GND 4 V+ V+ -- Supply Voltage. IF Limiter Amplifier Input. Typical input impedance is 1.8k. 5 IF IN 900 51k 1.98V 900 5 6 DEC 6 GND 1.98V IF Decoupling. An external decoupling Capacitor is connected. V+ 7 FIL OUT 20uA 691mV Amplifier Output and Input. External RC components form a band pass filter. 7 8 18k GND 8 FIL IN 662mV -4- Ver.2004-08-25 NJM2591 Pin No. SYMBOL EQUIVARENT CIRCUIT V+ 100uA VOLTAGE FUNCTION Demodulated Signal Output. 9 9 AF OUT 780mV GND V+ 15k 15k 400 10 400 10 QUAD 10uA 2.0V Quadrature Detector Input. Adding a 90 degree-phase shifter forms a quadrature detector circuit. A 90 degree-phase shifter mainly consists of a discriminator and a resistor. GND V+ IF Output. Output of IF Amplifier 11 IF OUT 60uA 11 1.18V GND V+ Received Signal Strength Indicator (RSSI) Output. The output signal level is in logarithmic proportion to the IF limiter amplifier input signal of pin5. 71.8mV 12 RSSI 45k 12 GND Ver.2004-08-25 -5- NJM2591 Pin No. SYMBOL EQUIVARENT CIRCUIT 13 VOLTAGE FUNCTION Noise Comparator Output. The result of noise comparator is output by comparing the output voltage of pin14 with internal reference. 13 NOISE DET GND -- V+ Noise Detector Output. The output of filter amplifier is rectified to direct current by external capacitor. 67.3mV 14 NOISE REC 14 70k GND 15 GND -- -- Ground. Mixer Input. Doubly balanced to reduce spurious radiation. 16 MIX IN 16 GND 1.0V Note 1. ESD protection diodes exist between each of all terminals and V+. 2. ESD protection diodes also exist between each terminal and ground. -6- Ver.2004-08-25 NJM2591 EVALUATION BOARD The evaluation PC board is useful for your design and is intended to have more understanding of the usage and performance of this device. The circuit of this board is the same as TEST CIRCUIT. For other electrical conditions, it should be necessary to reconsider each value of external components. Note that this board is not prepared to show the recommendation of pattern and parts layout. Circuit Diagram R6 NOISE REC MIX IN R7 C8 51 1000p NOISE DET 100 RSSI C6 1000p C11 10u C9 21.7MHz 33p 16 15 MIXER NOISE COMP BUFFER NOISE DET IF AMP NOISE AMP FILTER AMP 14 13 12 11 10 9 LPF RSSI QUAD DET R4 2.7k AF OUT 0.3 to 3kHz AUDIO OUT V + C7 0.1u CD OSC 1 C1 1000p 2 3 + 4 5 6 C2 0.1u 7 R1 150 C3 220 8 V LOCAL IN 21.25MHz C10 10u CF R9 Short or Open R8 C4 220 R3 10k R2 5.6k NOISE IN 31kHz C5 IF IN R5 51 Open 0.1u or Short 450kHz Note 1. This board is designed for mixer-input type and R9 / R8 are factory-configured as follows : R8 : open R9 : chip resistor of 0 For the case of IF-input type, please change the position of the chip resistor of 0 as follows ; R8 : chip resistor of 0 R9 : open 2. External components CF=CFWCA450KGFA-R0 (Murata) CD=CDBCB450KCAY70-R0 (Murata) Ver.2004-08-25 -7- NJM2591 Circuit Side View V+ MIX IN V+ R7 LOCAL IN C8 NOISE REC C7 C1 R6 NOISE DET RSSI R9 R8 IF IN C5 R8 R9 CF C2 R1 R R5 NJM 2591 C9 R4 CD R3 C3 C4 Ground Side View NOISE IN AF OUT C10 C11 Note 1. External Components C1, C1, C6, C8=1000pF C2, C7, C5=0.1uF C3, C4=220pF C9=33pF R1=150k R2=5.6k R3=10k R4=2.7k R5, R7=51 R6=100k R9 =O R8=open C10, C11=10uF CF=CFWCA450KGFA-R0(Murata) CD=CDBCB450KCAY70-R0(Murata) 2. There are two terminals for V+. For proper operation, both of these terminals are necessary for power supply. C6 -8- Ver.2004-08-25 NJM2591 TYPICAL CHARACTERISTICS ( Ta=25C, V+=2.0V, unless otherwise noted ) Current Consumption versus Supply Voltage 3.5 Current Consumption Iccq (mA) 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 2 4 6 8 Supply Voltage V+ (V) 10 No signal Audio Output versus Supply Voltage fif=450kHz,VinIF=80dBuVEMF,fmod=1kHz,fdev=1.5kHz,IF SW:A 110 100 Audio Output Voltage Vod (mVrms) 90 80 70 60 50 40 0 2 4 6 8 Supply Voltage V+ (V) 10 RSSI Output versus Supply Voltage -Mix.Inputfmix=21.7MHz,VinMIX=40dBuVEMF,flo=21.7MHz 2.5 2.5 RSSI Output versus Supply Voltage -IF Inputfif=450kHz,VinIF=60dBuVEMF 2 2 RSSI Output Vrssi (V) RSSI Output Vrssi (V) 1.5 1.5 1 1 0.5 0.5 0 0 2 4 6 Supply Voltage V+ (V) 8 10 0 0 2 4 6 8 10 Supply Voltage V+ (V) S/N versus Supply Voltage -Mix.Inputfmix=21.7MHz,fmod=1kHz,fdev=1.5kHz,AM=30%,flo=21.25MHz,IF SW:B S/N versus Supply Voltage - IF Input 70 Signal to Noise Ratio S/N (dB) 70 65 60 55 50 45 40 fif=450kHz,fdev=1.5kHz,fmod=1kHz,IF SW:A Signal to Noise Ratio S/N (dB) 65 60 55 50 45 40 0 2 4 6 8 Supply Voltage V+ (V) 10 0 2 4 6 Supply Voltage V+ (V) 8 10 Ver.2004-08-25 -9- NJM2591 Audio Out 12dB S/N Sensitivity versus Supply Voltage fmix=21.7MHz,fmod=1kHz,fdev=1.5kHz,flo=21.25MHz,100dBuV,IF SW:B IF Detuning characteristics fif=450kHz,VinIF=80dBuVEMF,fdev=1.5kHz,fmod=1kHz,IF SW:A 5 0 -5 -10 IF Detuning (dB) 20 Mixer Input Level (dBuVEMF) 16 12 -15 -20 -25 -30 -35 -40 -45 -50 8 4 0 0 2 4 6 Supply Voltage V+ (V) 8 10 -20 -10 0 10 Relative Frequency to fif(kHz) 20 Mixer Conversion Gain versus Frequency 26 Mixer Conversion Gain Gmix (dB) Mixer Conversion Gain versus OSC Input 30 Mixer Conversion Gain Gmix (dB) fif=450kHz,MIX OUT:1.8k term. fif=450kHz,MIX OUT:1.8k term.,V+=2.0V 21.7MHz 100MHz 24 22 20 18 16 14 12 10 1 10 100 1000 Mixer Input Frequency fmix (MHz) 25 20 15 10 5 0 60 80 100 Local OSC Input Level (dBuV) 120 Mixer 3rd Order Intercept 160 fmix=21.7MHz,flo=21.25MHz,MIX OUT:1.8k term. 2 1.8 AF Output Voltage (Vdc) AF Output versus Frequency : S-Curve VinIF=80dBuVEMF,Without 0.3-to-3kHz filter,IF SW:A Mixer Output Level (dBuVEMF) 140 120 100 80 60 40 20 0 20 40 60 80 100 Mixer Input Level VinMIX (dBuVEMF) 120 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 430 440 450 460 IF Frequency fif (kHz) 470 - 10 - Ver.2004-08-25 NJM2591 S+N,N,AMR versus Mixer Input fmix=21.7MHz,fmod=1kHz,fdev=1.5k,AM=30%,flo=21.25MHz,IF SW:B S+N,N,AMR versus IF Input 10 0 -10 S+N,N,AMR (dB) fif=450kHz,fdev=1.5kHz,fmod=1kHz,AM=30%,IF SW:A S+N 10 0 -10 S+N,N,AMR (dB) S+N -20 -30 -40 -50 N -60 -70 -20 0 20 40 60 80 100 Mixer Input VinMIX (dBuVEMF) 120 AMR -20 -30 -40 -50 -60 -70 -20 0 20 40 60 80 100 120 IF Input VinIF (dBuVEMF) N AMR RSSI Output Voltage versus Mixer Input 2.5 fmix=21.7MHz,flo=21.7MHz,IF SW:B 2.5 RSSI Output Voltage versus IF Input fif=450kHz,IF SW:A RSSI Output Voltage Vrssi (Vdc) 2 V+ = 9V 3V 2V RSSI Output Voltage Vrssi (Vdc) 2 V+ = 9V 3V 2V 1.5 1.5 1 1 0.5 0.5 0 -20 0 20 40 60 80 100 Mixer Input Level VinMIX (dBuVEMF) 120 0 -20 0 20 40 60 80 100 IF Input Level VinIF (dBuVEMF) 120 Noise Comparator Characteristics 2 1.2 1.0 Noise Detector Characteristics fnoise=31kHz NOISE DET Output Vndet (V) NOISE REC Output (V) 2 1.5 0.8 0.6 0.4 0.2 1 0.1V 0.5 0 0 0.4 0.8 1.2 1.6 NOISE REC Output (V) 0.0 0 0.1 0.2 0.3 0.4 Filter Amplifier Input (mVrms) 0.5 Ver.2004-08-25 - 11 - NJM2591 NOISE REC Output versus Temperature 0.8 0.7 NOISE REC Output (V) Current Consumption versus Temperature 3.0 Current Consumption Iccq (mA) fnoise=31kHz,FIL IN:0.2mVrms input 2.5 2.0 1.5 1.0 0.5 0.0 0.6 0.5 0.4 0.3 0.2 0.1 0.0 -40 0 40 Ambient Temperature (C) 80 -40 0 40 Ambient Temperature (C) 80 Mixer Convesion Gain versus Temperature 26 Mixer Conversion Gain Gmix(dB) fmix=21.7MHz,flo=21.25MHz,MIX OUT:1.8k term. Audio Output versus Temperature 110 100 Audio Output Vod(mVrms) fif=450kHz,VinIF=80dBuVEMF,fmod=1kHz,fdev=1.5kHz 25 24 23 22 21 20 19 18 -40 0 40 Ambient Temperature (C) 80 90 80 70 60 50 40 -40 0 40 80 Ambient Temperature (C ) RSSI Output versus Temperature -Mix.Input2.5 RSSI Output Voltage Vrssi (Vdc) RSSI Output versus Temperature -IF Input2.5 RSSI Output Voltage Vrssi (Vdc) V+=3.0V,fmix=21.7MHz,flo=21.7Mz V+=3.0V,fif=450kHz 2 80dBuVEMF 2 100dBuVEMF 1.5 70dBuVEMF 1 1.5 50dBuVEMF 1 30dBuVEMF 10dBuVEMF 50dBuVEMF 30dBuVEMF 0.5 0.5 0 -40 0 40 80 Ambient Temmerature (C) 0 -40 0 40 Ambient Temperature (C) 80 - 12 - Ver.2004-08-25 NJM2591 [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. Ver.2004-08-25 - 13 - |
Price & Availability of NJM2591V
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |