NJM2540/2543
- 1 -
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
BLOCK DIAGRAM
(Note)
Pin numbers in circle are for NJM2540
Pin numbers in parenthesis are for NJM2543
PACKAGE OUTLINE
NJM2540V/NJM2543V
VH
F
O
S
C
1
VH
F
O
S
C
2
VO
S
C
UHF
O
S
C1
UHF
O
S
C2
GN
D
OS
C
O
U
T
U/
V
S
W
UHF
IN
2
UHF
IN
1
VH
F
I
N
2
VH
F
I
N
1
MI
X
O
U
T
2
MI
X
O
U
T
1
VC
C
IF
O
U
T
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VHF OSC
UHF OSC
OSC BUFF
U/V
SW
UHF MIX
VHF MIX
IF AMP
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
NJM2540/2543
- 2 -
ABSOLUTE MAXIMUM RATINGS (T
A
=25
C)
Parameter Symbol Ratings Unit
Supply Voltage
Vcc
7
V
Power Dissipation
P
D
*550 mW
Operating Temperature Range
T
opr
-20 to +75
C
Storage Temperature Range
T
stg
-40 to +150
C
* Test IC soldered on PC board
RECOMMENDED OPERATING VOLTAGE RANGE
(T
A
=25C)
Parameter Condition
Symbol
Min.
Typ.
Max.
Unit
Operating Voltage
Vcc
4.5
5.0
5.5
V
ELECTRICAL CHARACTERISTICS (Note 1) (Vcc=5V, T
A
=25C,IF=45.75MHz)
Parameter Condition
Symbol
Min.
Typ.
Max.
Unit
Operating Current
VHF OSC only, No RF input
Icc1
24
41
56
mA
Operating Current
UHF OSC only, No RF input
Icc2
25
42
57
mA
Conversion Gain
VHF OSC only
f
RF
=55.25 to 361.25MHz, -50dBm
Ga1 - 26 - dB
Conversion Gain
VHF OSC only
f
RF
=55.25 to 361.25MHz, -50dBm
Ga2 - 30 - dB
PCS Beat 1
VHF OSC only
Input Level: Fp=Fc=Fs
IF Output level: -10dBm
PCS1 - 51 - dB
PCS Beat 2
UHF OSC only
Input Level: Fp=Fc=Fs
IF Output level: -10dBm
PCS2 - 50 - dB
Noise Figure 1
VHF OSC only
F
RF
=55.25 to 361.25MHz
NF1 - 13 - dB
Noise Figure 2
VHF OSC only
F
RF
=55.25 to 361.25MHz
NF2 - 11 - dB
OSC Output Level
F
local
=101 to 847MHz
OUTosc
-
-12
-
dBm
Maximum IF Output Level F
local
=55.25 to 801.25MHz
OUTif
-
10
-
dBm
(Note 1) Because AC characteristics largely depends on application circuit, these parameters are specified
by the DC characteristics as shown in next page.
NJM2540/2543
- 3 -
DC ELECTRICAL CHARACTERISTICS (V
CC
=Vosc=Vmix=5V,T
A
=25C, Vb=2.92V)
Parameter Condition
Symbol
Min.
Typ.
Max.
Unit
Pin3 Current 1:UHF
Vsw=2v
Iosc1
9
-
17.6
mA
Pin3 Current 2:VHF
Vsw=0.5v
Iosc2
8.7
-
16.8
mA
Pin7
Voltage
1:UHF
Vsw=2v
Voscout1
3.45 - 3.95 V
Pin7
Voltage
2:VHF
Vsw=0.5v
Voscout2
3.45 - 3.95 V
Pin9 Voltage
Vsw=2v
Vifout
2
-
2.5
V
Pin10 Current
Vsw=2v Icc
18.5 - 37.5
mA
Pin11 Voltage 1:UHF Vsw=2v Vmixouta1
3.6 - 4.15
V
Pin11 Voltage 2:VHF Vsw=0.5v
Vmixouta2
3.6
-
4.15 V
Pin12 Voltage 1:UHF Vsw=2v
Vmixoutb1
3.6
-
4.15 V
Pin12 Voltage 2:VHF Vsw=0.5v
Vmixoutb2
3.6
-
4.15 V
Pin1 Voltage
Vsw=0.5v
Vvosc1
2.65
-
3.2 V
Pin2 Voltage
Vsw=0.5v
Vvosc2
1.95
-
2.5
V
Pin4 Voltage
Vsw=2v Vuosc1
1.95 - 2.45 V
Pin5 Voltage
Vsw=2v Vuosc2
2.6 - 3.2 V
Pin2 Current
Vsw=0.5v,2Pin=Vvosc1,1-2Pin Short
Ivosc
2.4 - 4.6
mA
Pin4 Current
Vsw=2v,4Pin=Vuosc1,4-5Pin Short
Iuosc
2.9 - 5.7
mA
Pin13 Voltage
Vsw=0.5v
Vvmixa
1.8
-
2.25
V
Pin14 Voltage
Vsw=0.5v
Vvmixb
1.8
-
2.25
V
Pin15 Voltage
Vsw=2v
Vumixa
1.8
-
2.25
V
Pin16 Voltage
Vsw=2v Vumixb
1.8 - 2.25
V
DC TEST CIRCUIT
16
+
1u
VH
F
O
S
C
1
VH
F
O
S
C
2
VO
S
C
UHF
O
S
C1
UHF
O
S
C2
GN
D
OS
C
O
U
T
U/
V
S
W
UHF
I
N
2
UHF
I
N
1
VH
F
I
N
2
VH
F
I
N
1
MI
X
O
U
T
2
MI
X
O
U
T
1
VC
C
(V
m
i
x
)
IF
O
U
T
+
1u
Vb
VHF
Vsw
1n
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1n
1n
1n
1n
1n
1n
1n
1n
1n
1n
1n
1n
1n
1n
(1
)
(2
)
(3
)
(4
)
(5
)
(6
)
(7
)
(8
)
(9
)
(1
0
)
(1
1
)
(1
2
)
(1
3
)
(1
4
)
(1
5
)
(1
6
)
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