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BU2374FV
Technical data
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ROHM BU2374FV Technical data

Video Accessory ICs
High Performance VCOs for Image Sampling
●Description
General-purpose VCO Series ICs (BU2373FV and BU2374FV) have a built-in VCO and phase comparator and facilitate the configuration of a PLL system through the external connection of a LPF and frequency divider. Furthermore, in order to facilitate the loop constant settings of the PLL system, the application manual has been enhanced to ensure studies on the application.
●Features
1) The VCO enables midpoint settings within the range of oscillation through the external resistance.
2) The rising edge trigger type of phase comparator is built in.
3) Power-down mode setting can be made independently with the VCO and the phase comparator.
4) The VCO output frequency division can be selected on the SELECT pin.
5) Compact SSOP-B14 Package is adopted.
●Applications
CRT, LCD monitor, and CD-RW
●Line up matrix
BU2373FV BU2374FV
VDD=3.0V ○ －
Supply voltage
VDD=3.3V ○ ○
No.11069EBT07
VDD=5.0V ○ －
VDD=3.0V 37～60MHz －
Frequency range
VCO-Frequency dividing mode 1/2 1/4
Operating temperature range -20～75℃ -20～75℃
Package SSOP-B14 SSOP-B14
●Absolute maximum ratings (Ta=25℃)
Supply voltage VDD -0.5～7.0 V
Input voltage VIN -0.5～VDD+0.5 V
Storage temperature range Tst g -3 0 ～125 ℃
Power dissipation Pd 400 mW
*1 Operating is not guaranteed. *2 In the case of exceeding Ta = 25℃, 4.0mW should be reduced per 1℃. *3 The radiation-resistance design is not carried out. *4 Power dissipation is measured when the IC is mounted to the printed circuit board.
VDD=3.3V 37～65MHz 37～60MHz
VDD=5.0V 43～100MHz －
Symbol Ratings Unit
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© 2011 ROHM Co., Ltd. All rights reserved.
1/18
2011.08 - Rev.B
BU2373FV,BU2374FV
●Electrical characteristics ◎BU2373FV(Ta=25℃, VDD=3.0V, unless otherwise specified.)
Parameter Symbol
Min. Typ. Max.
Limits
(VCO)
VCO_IN input impedance Zi - 10 - MΩ
Technical Note
Unit Conditions
Consumption current (while in normal mode)
Consumption current (while in standby mode)
Idd(VCO) - 15 - mA With 60 MHz output
Idd_st(VCO) - - 1 µA
VCO_INHIBIT=”H”, VCOIN=”L”
Control voltage VI 0.5 - VDD-0.5 V
Oscillation range frange 37 - 60 MHz
Bias resistor range Rbias 1.5 - 2.0 KΩ
Frequency sensitivity β1 - 23 - MHz/V
Output duty Duty 45 50 55 %
*1
*2
Measured at a voltage of 1/2 of VDD
(PFD)
Consumption current (while in normal mode)
Consumption current (while in standby mode)
*1 Design guaranteed figures 37 MHz to 45 MHz when Rbias = 2.0 kΩ 50 MHz to 60 MHz when Rbias = 1.5 kΩ *2 Frequency sensitivity { f1 (VCOIN=2.0V) f2 (VCOIN = 1.0V) } / 1.0V *3 If the SELECT pin is set to “H” and the output frequency is reduced to 1/2, the frequency range and the frequency sensitivity will be all reduced to 1/2.
Idd(PFD) - 0.5 - mA
Idd_st(PFD) - - 1 µA
When 1 MHz is input to the FIN_A and B
PFD_INHIBIT=”H”, FIN_A,B=”L”
BU2373FV(Ta=25℃, VDD=5.0V, unless otherwise specified.)
Parameter Symbol
Min. Typ. Max.
Limits
Unit Conditions
(VCO)
VCO_IN input impedance
Consumption current (while in normal mode)
Consumption current (while in standby mode)
Control voltage
Oscillation range
Bias resistor range
Frequency sensitivity
Output duty
Zi - 10 - MΩ
Idd(VCO) - 25 - mA
Idd_st(VCO) - - 1 µA
VI 0.5 - VDD-0.5 V
frange 43 - 100 MHz
Rbias 1.6 - 2.5 KΩ
β1 - 25 - MHz/V
Duty 45 50 55 %
With 60 MHz output
VCO_INHIBIT=”H”, VCOIN=”L”
*1
*2
Measured at a voltage of 1/2 of VDD
(PFD)
Consumption current (while in normal mode)
Consumption current (while in standby mode)
*1 Design guaranteed figures 43 MHz to 77 MHz when Rbias = 2.5 kΩ 75 MHz to 100 MHz when Rbias = 1.6 kΩ *2 Frequency sensitivity { f1 (VCOIN = 3.5V) f2 (VCOIN=1.5 V) } / 2.0V *3 If the SELECT pin is set to “H” and the output frequency is reduced to 1/2, the frequency range and the frequency sensitivity will be all reduced to 1/2.
Idd(PFD) - 1 - mA
Idd_st(PFD) - - 1 µA
When 1 MHz is input to the FIN_A and B
PFD_INHIBIT=”H”, FIN_A&B=”L”
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© 2011 ROHM Co., Ltd. All rights reserved.
2/18
2011.08 - Rev.B
BU2373FV,BU2374FV
◎BU2374FV(Ta=25℃, VDD=3.3V, unless otherwise specified.)
Parameter Symbol
Min. Typ. Max.
Limits
(VCO)
VCO_IN input impedance Zi - 10 - MΩ
Technical Note
Unit Conditions
Consumption current (while in normal mode)
Consumption current (while in standby mode)
Idd(VCO) - 12.5 - mA With 50 MHz output
Idd_st(VCO) - - 1 µA
VCO_INHIBIT=”H”, VCOIN=”L”
Control voltage VI 0.5 - VDD-0.5 V
Oscillation range frange 37 - 60 MHz
Bias resistor range Rbias 2.0 - 3.0 KΩ
Frequency sensitivity β1 - 23 - MHz/V
Output duty Duty 45 50 55 %
*1
*2
Measured at a voltage of 1/2 of VDD
(PFD)
Consumption current (while in normal mode)
Consumption current (while in standby mode)
*1 Design guaranteed figures 37 MHz to 54 MHz when Rbias =2 .0 kΩ 53 MHz to 60 MHz when Rbias = 3.0 kΩ *2 Frequency sensitivity { f1 (VCOIN = 2.0V) f2 (VCOIN = 1.0 V) } / 1.0V *3 If the SELECT pin is set to “H” and the output frequency is reduced to 1/4, the frequency range and the frequency sensitivity will be all reduced to 1/4.
Idd(PFD) - 0.5 - mA
Idd_st(PFD) - - 1 µA
When 1 MHz is input to the FIN_A and B
PFD_INHIBIT=”H”, FIN_A, B=”L”
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© 2011 ROHM Co., Ltd. All rights reserved.
3/18
2011.08 - Rev.B
BU2373FV,BU2374FV
●Reference data (BU2373FV－Power Voltage Fluctuation Data)
55
54
53
52
51
50
Duty[%]
：
49
Duty
48
47
46
45
-25 0 25 50 75 100
From top:VDD=3.15V
Temper ature：T[℃]
VDD=3.00V VDD=2.85V
Fig.1 Control Vole Output Frequency
(VDD=3.0V,Rbias=1.5KΩ,Ta=25℃)
100
80
f[MH z]
：
60
40
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
From top: VDD=3.45V
VDD=3.30V VDD=3.15V
Contr ol Vol tag e：VI[V]
Fig.4 Control Voltage – Output Frequency
(VDD=3.3V,Rbias=1.6KΩ,Ta=25℃)
150
125
100
f[MH z]
：
75
50
Output F requency
25
0
0.0 1.0 2. 0 3. 0 4. 0 5.0
Fig.7 Control Voltage – Output Frequency
(VDD=5.0V,Rbias=1.6KΩ,Ta=25℃)
From top:VDD=5.25V
VDD=5.00V VDD=4.75V
Control Voltag e：VI[V]
55
54
53
52
51
50
Duty[%]
：
49
Duty
48
47
46
45
-25 0 25 50 75 100
From top:VDD=3.15V
Temper ature：T[℃]
VDD=3.00V VDD=2.85V
Fig.2 Control Voltage – Output Frequency
(VDD=3.0V,Rbias=1.8KΩ,Ta=25℃)
100
80
f[MH z]
：
60
40
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
From top:VDD=3.45V
Control Voltag e：VI[V]
VDD=3.30V VDD=3.15V
Fig.5 Control Voltage – Output Frequency
(VDD=3.3V,Rbias=2.0 KΩ,Ta=25℃)
150
125
100
f[MH z]
：
75
50
Output F requency
25
0
0.0 1.0 2. 0 3. 0 4. 0 5.0
From top:VDD=5.25V
Contr ol Vol tag e：VI[V]
VDD=5.00V VDD=4.75V
Fig.8 Control Voltage – Output Frequency
(VDD=5.0V,Rbias=2.4KΩ,Ta=25℃)
Technical Note
100
80
f[MH z]
：
60
40
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Fig.3 Control Voltage – Output Frequency
(VDD=3.0V,Rbias=2.0KΩ,Ta=25℃)
100
80
f[MH z]
：
60
40
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Fig.6 Control Voltage – Output Frequency
(VDD=3.3V,Rbias=2.2 KΩ,Ta=25℃)
150
125
100
f[MH z]
：
75
50
Output F requency
25
0
0.0 1.0 2. 0 3.0 4. 0 5.0
Fig.9 Control Voltage – Output Frequency
(VDD=5.0V,Rbias=2.7KΩ,Ta=25℃)
From top: VDD=3.15V
VDD=3.00V VDD=2.85V
Control Voltag e：VI[V]
From top:VDD=3.45V
VDD=3.30V VDD=3.15V
Contr ol Vol tag e：VI[V]
From top:VDD=5.25V
Control Voltag e：VI[V]
VDD=5.00V VDD=4.75V
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© 2011 ROHM Co., Ltd. All rights reserved.
4/18
2011.08 - Rev.B
BU2373FV,BU2374FV
●Reference data (BU2373FV－Temperature Fluctuation Data)
100
80
f[MH z]
：
60
40
Output F requency
20
0
0.0 0. 5 1.0 1. 5 2.0 2. 5 3.0 Control Voltag e：VI[V]
From top:T=25℃
T=-20℃
T=75℃
Fig.10 Control Voltage – Output Frequency
(VDD=3.0V,Rbias=1.5KΩ)
100
80
f[MH z]
：
60
40
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3. 5
Fig.13 Control Voltage – Output Frequency
(VDD=3.3V,Rbias=1.6KΩ)
From top:T=75℃
Control Voltag e：VI[V]
T=25℃
T=-20℃
150
125
100
f[MH z]
：
75
50
Output F requency
25
0
0.0 1.0 2. 0 3.0 4.0 5.0
Fig.16 Control Voltage – Output Frequency
(VDD=5.0V,Rbias=1.6KΩ)
From top:T=75℃
T=25℃
T=-20℃
Control Voltag e：VI[V]
100
80
f[MH z]
：
60
40
From top:T=75℃
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 Control Voltage：VI[V]
T=25℃
T=-20℃
Fig.11 Control Voltage – Output Frequency
(VDD=3.0V,Rbias=1.8KΩ)
100
80
f[MH z]
：
60
40
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
From top:T=75℃
Control Voltage：VI[V]
T=25℃
T=-20℃
Fig.14 Control Voltage – Output Frequency
(VDD=3.3V,Rbias=2.0KΩ)
150
125
100
f[MH z]
：
75
50
Output F requency
25
0
0.0 1.0 2.0 3. 0 4.0 5.0
From top:T=75℃
T=25℃
T=-20℃
Control Voltag e：VI[V]
Fig.17 Control Voltage– Output Frequency
(VDD=5.0V,Rbias=2.4KΩ)
Technical Note
100
80
f[MH z]
：
60
40
From top:T=75℃
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 Control Voltag e：VI[V]
Fig.12 Control Voltage – Output Frequency
(VDD=3.0V,Rbias=2.0 KΩ)
100
80
f[MH z]
：
60
40
Output F requency
20
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Control Voltage：VI[V]
Fig.15 Control Voltage – Output Frequency
(VDD=3.3V,Rbias=2.2KΩ)
150
125
100
f[MH z]
：
75
50
Output F requency
25
0
0.0 1.0 2.0 3. 0 4.0 5.0 Control Voltage：VI[V]
Fig.18 Control Voltage – Output Frequency
(VDD=5.0V,Rbias=2.7KΩ)
T=25℃
T=-20℃
From top:T=75℃
T=25℃
T=-20℃
From top:T=75℃
T=25℃
T=-20℃
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© 2011 ROHM Co., Ltd. All rights reserved.
5/18
2011.08 - Rev.B
BU2373FV,BU2374FV
●Reference data (BU2373FV－Recommended Oscillation Range, Frequency - Frequency Sensitivity)
65
Recommended Oscillation Range”H”
60
55
f[MH z]
：
50
45
40
Output F requency
Recommended Oscillation Range”L”
35
30
1.5 1.6 1.7 1. 8 1.9 2.0 Bias Resi stor :Rbi as[K O]
Fig.19 Bias Resistance
- Recommended Oscillation Range (VDD=3.0V, Select=”L”)
35
Recommended Oscillation Range”H”
30
f[MH z]
：
25
20
Output F requency
Recommended Oscillation Range”L”
15
1.5 1.6 1.7 1.8 1.9 2.0 Bias Resi stor :Rbi as[KO]
Fig.20 Bias Resistance
- Recommended Oscillation Range (VDD=3.0V, Select=”H”)
70
：
Recommended Oscillation Range”H”
65
60
f[MH z]
55
50
45
40
Output F requency
35
Recommended Oscillation Range”L”
30
1.6 1.7 1. 8 1.9 2.0 2. 1 2.2
Bias Resi stor :Rbi as[KO]
Fig.22 Bias Resistance
- Recommended Oscillation Range (VDD=3.3V, Select=”L”)
35
Recommended Oscillation Range”H”
30
f[MHz]
：
25
20
Output F requency
Recommended Oscillation Range”L”
15
1.6 1.7 1. 8 1.9 2.0 2.1 2.2 Bias resi stor:R bias[ KO]
Fig.23 Bias Resistance -
Recommended Oscillation Range
(VDD=3.3V, Select=”H”)
110
Recommended Oscillation Range”H”
100
90
f[MH z]
80
：
70
60
50
Output F requency
40
Recommended Oscillation Range”L”
30
1.6 1.8 2. 0 2. 2 2.4 2.6 Bias Resi stor :Rbi as[K O]
Fig.25 Bias Resistance –
Recommended Oscillation Range
(VDD=5.0V, Select=”L”)
55
Recommended Oscillation Range”H”
45
f[MH z]
：
35
25
Output F requency
Recommended Oscillation Range”L”
15
1.6 1.8 2.0 2.2 2.4 2.6 Res istor :Rbi as[KO]
Fig.26 Bias Resistance –
Recommended Oscillation Range
(VDD=5.0V, Select=”H”)
Technical Note
30
25
20
ß1[MH z/v]
：
15
10
5
Fr equency Sensi tivi ty
0
35 40 45 50 55 60
Output F req uency：f[MH z]
Fig.21 Output Frequency
- Frequency Sensitivity
(VDD=3.0V, Select=”L”)
30
25
20
ß1[MH z/v]
：
15
10
5
Fr equency Sensi tivi ty
0
35 40 45 50 55 60 65
Output F req uency：f[MH z]
Fig.24 Output Frequency
- Frequency Sensitivity
(VDD=3.3V, Select=”L”)
30
25
20
ß1[MH z/v]
：
15
10
5
Fr equency Sensi tivi ty
0
40 50 60 70 80 90 10 0
Output F req uency：f[MH z]
Fig.27 Output Frequency
- Frequency Sensitivity
(VDD=5.0V, Select=”L”)
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© 2011 ROHM Co., Ltd. All rights reserved.
6/18
2011.08 - Rev.B
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