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
P
D
Operating Temperature Range
Storage Temperature Range
T
opr
T
stg
(T
A
=25°C)
Unit
V
mW
°C
°C
(T
A
=25°C)
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
f
RF
=55.25 to 361.25MHz, -50dBm
VHF OSC only
Conversion Gain
f
RF
=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
F
RF
=55.25 to 361.25MHz
VHF OSC only
Noise Figure 2
F
RF
=55.25 to 361.25MHz
OSC Output Level
F
local
=101 to 847MHz
Maximum IF Output Level F
local
=55.25 to 801.25MHz
Symbol
Vcc
Min.
4.5
Typ.
5.0
Symbol
Icc1
Icc2
Ga1
Ga2
PCS1
(Vcc=5V, T
A
=25°C,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
(V
CC
=Vosc=Vmix=5V,T
A
=25°C, 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-
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
