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NJM2540/2543
Mixer and Oscillator for TV Tuner
DESCRIPTION The NJM2540/43 are 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 NJM2540/43 packaging in SSOP16 are suitable for small-sized tuners. The NJM2543 is the reverse pin assignment type of the NJM2540. FEATURES * Operating Voltage 5V * Mixers, Oscillators, IF AMP and OSC buffer on chip * Bipolar Technology * Package Outline: SSOP16 PACKAGE OUTLINE
NJM2540V/NJM2543V
BLOCK DIAGRAM
MIXOUT2 MIXOUT1 VHFIN2 UHFIN2 VHFIN1 UHFIN1
(1) 16
(2) 15
(3) 14
(4) 13
(5) 12
(6) 11
(7) 10
(8) 9
UHF MIX
VHF MIX
IF AMP
U/V SW
VHF OSC
UHF OSC
OSC BUFF
1 (16) VHFOSC1
2 (15) VHFOSC2
3 (14) VOSC
4 (13) UHFOSC1
5 (12) UHFOSC2
6 (11) GND
7 (10) OSCOUT
8 (9) U/V SW
(Note) Pin numbers in circle are for NJM2540 Pin numbers in parenthesis are for NJM2543
IFOUT
VCC
-1-
NJM2540/2543
ABSOLUTE MAXIMUM RATINGS Parameter Symbol Supply Voltage Vcc Power Dissipation PD Operating Temperature Range Storage Temperature Range Topr Tstg (TA=25C) Unit V mW C C (TA =25C) Max. Unit 5.5 V
Ratings 7 *550 -20 to +75 -40 to +150
* Test IC soldered on PC board RECOMMENDED OPERATING VOLTAGE RANGE Parameter Condition Operating Voltage 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 PCS Beat 1 Input Level: Fp=Fc=Fs IF Output level: -10dBm UHF OSC only PCS Beat 2 Input Level: Fp=Fc=Fs IF Output level: -10dBm VHF OSC only Noise Figure 1 FRF=55.25 to 361.25MHz VHF OSC only Noise Figure 2 FRF=55.25 to 361.25MHz OSC Output Level Flocal=101 to 847MHz Maximum IF Output Level Flocal=55.25 to 801.25MHz Symbol Vcc Min. 4.5 Typ. 5.0
Symbol Icc1 Icc2 Ga1 Ga2 PCS1
(Vcc=5V, TA =25C,IF=45.75MHz) Min. Typ. Max. Unit 24 41 56 mA 25 42 57 mA 26 30 51 dB dB dB
PCS2 NF1 NF2 OUTosc OUTif
-
50 13 11 -12 10
-
dB dB 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-
NJM2540/2543
DC ELECTRICAL CHARACTERISTICS (VCC=Vosc=Vmix=5V,TA=25C, Vb=2.92V) Parameter Condition Symbol Min. Pin3 Current 1:UHF Vsw=2v Iosc1 9 Pin3 Current 2:VHF Vsw=0.5v Iosc2 8.7 Pin7 Voltage 1:UHF Vsw=2v Voscout1 3.45 Pin7 Voltage 2:VHF Vsw=0.5v Voscout2 3.45 Pin9 Voltage Vsw=2v Vifout 2 Vsw=2v Icc Pin10 Current 18.5 Vmixouta1 Pin11 Voltage 1:UHF Vsw=2v 3.6 Pin11 Voltage 2:VHF Vsw=0.5v Vmixouta2 3.6 Pin12 Voltage 1:UHF Vsw=2v Vmixoutb1 3.6 Pin12 Voltage 2:VHF Vsw=0.5v Vmixoutb2 3.6 Pin1 Voltage Vsw=0.5v Vvosc1 2.65 Pin2 Voltage Vsw=0.5v Vvosc2 1.95 Vsw=2v Vuosc1 Pin4 Voltage 1.95 Vsw=2v Vuosc2 Pin5 Voltage 2.6 Vsw=0.5v,2Pin=Vvosc1,1-2Pin Short Ivosc Pin2 Current 2.4 Vsw=2v,4Pin=Vuosc1,4-5Pin Short Iuosc Pin4 Current 2.9 Pin13 Voltage Vsw=0.5v Vvmixa 1.8 Pin14 Voltage Vsw=0.5v Vvmixb 1.8 Pin15 Voltage Vsw=2v Vumixa 1.8 Vsw=2v Vumixb Pin16 Voltage 1.8 DC TEST CIRCUIT
Typ. -
Max. 17.6 16.8 3.95 3.95 2.5 37.5 4.15 4.15 4.15 4.15 3.2 2.5 2.45 3.2 4.6 5.7 2.25 2.25 2.25 2.25
Unit mA mA V V V mA V V V V V V V V mA mA V V V V
1n
1n
1n
1n
1n
1n
1n
+
1u 1n
16
(1) (2)
15
(3)
14
(4)
13
(5)
12
MIXOUT2
(6)
11
(7)
10
(8) (9)
9
IFOUT U/V SW
MIXOUT1
UHFIN2
UHFIN1
VHFIN2
VHFIN1
VHFOSC1
VHFOSC2
UHFOSC1
UHFOSC2
(16)
(15)
(14)
(13)
(12)
(11)
1
2
3
4
5
6
(10)
OSCOUT
VOSC
GND
VCC (Vmix)
7
8
1n
1n
1n
+
1u 1n 1n 1n 1n
VHF
Vsw
Vb
-3-
NJM2540/2543
AC TEST CIRCUIT
UHF IN VHF IN IF OUT
2.2n 16774B
2.2n
2.2n
2.2n
2.2n 20p
2.2n
16
UHFIN2 (1) (2)
15
UHFIN1 (3)
14
VHFIN2 (4)
13
(5) VHFIN1
12
MIXOUT2 (6)
11
MIXOUT1 (7)
10
(8) VCC (Vmix)
9
IFOUT U/V SW (9)
VHFOSC1
VHFOSC2
UHFOSC1
UHFOSC2
(16)
(15)
(14)
(13)
(12)
4p
(11)
GND
(10)
1
15p 51p 1T363A
2
36p
3
7p 1n
4
5
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-
NJM2540/2543
TERMINAL CHARACTERISTICS No. Symbol Typ.DC Voltage (V) VHF 2.9 Equivalent Circuit
3
Function
1 (16)
VHFOSC1
1 2
VHF Oscillator
2 (15) 3 (14) 4 (13)
VHFOSC2
VHF 2.2 Oscillator Power Supply
3
VOSC
-
UHFOSC1
UHF 2.1
5 4
UHF Oscillator
5 (12) 6 (11)
UHFOSC2
UHF 2.9
GND
-
GND
7 (10)
OSCOUT
3.7
7
OSC Output
8
8 (9)
U/V SW
-
UHF/VHF Select Switch UHF at Vcc VHF at GND
9 (8)
IFOUT
2.2
9
IF Output
-5-
NJM2540/2543
No. 10 (7) 11 (6) Symbol VCC Typ.DC Voltage (V) 12
Equivalent Circuit
Function Power Supply Except for Oscillator
MIXOUT1
3.9
11
Mixer Output 12 (5) MIXOUT2 3.9
13 (4) 14 (3) 15 (2) 16 (1)
VHFIN1
VHF 2.0 VHF 2.0 UHF 2.0 UHF 2.0
13
14
RF Input for VHF band
VHFIN2
UHFIN1
15
16
RF Input for UHF band
UHFIN2
-6-
NJM2540/2543
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 20
RF IN P U T L EV E L v sIF O UT P U T L E V E L
50
10
CONVE RTION GAIN [dB]
IF OUTP UT LE V E L [dBm]
40
UH F
0
30
VHF _Lo w
V HF _Hi
-1 0
20
-2 0
fR F=127.25M Hz (VH F_L ow)
10 -3 0
fR F=361.25M Hz (VH F_H i) fRF= 80 1.25M H z (UHF)
0 0 20 0 40 0 600 800
-4 0 -8 0 -6 0 -4 0 -2 0 0 20
R F F R E Q U E N C Y [MH z]
R F IN P UT L E V EL [dB m ]
P C S BE AT v sR F F R EQU E N C Y f p/fc/fs:Id e ntit y Lev el,IF Lev e l= -10d Bm
80 20
NO ISE F IG U R E v sR F F R EQ U E N C Y
75 16 70
fIF +92 0H z P CS B E AT [dB]
V H F _Lo w 65 V H F _H i UH F
60
NF [dB]
V HF_Low VHF _Hi
UH F
12
8 55
fRF-92 0K H z
50 4 45
40 0 20 0 40 0 60 0 80 0 R F FR E Q UE N C Y [M H z]
0 0 200 400 600 800 R F F R EQ U E NC Y [M Hz ]
-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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