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SM5306A
Low Voltage, 3-channel Video Buffer
OVERVIEW
The SM5306A is a 3-channel low-voltage video buffer IC that can drive a 75 termination resistance load. The output buffer gain can be switched between 0dB and 6dB. A built-in sag compensation circuit enables a lower output coupling capacitance to be used. The device operates from a 3.0 to 5.5V supply.
FEATURES
I I I
PINOUT
(Top view)
I I I
I I I I
Supply voltage: 3.0 to 5.5V Current consumption: 24mA (VCC = 3.3V) Output gain switching: 0dB (GSEL = LOW) 6dB (GSEL = HIGH) Gain error: 0.5dB Maximum passband frequency: over 20MHz Maximum output voltage: min. 2.0Vp-p (gain = 6dB) Sag compensation circuit built-in Synctip clamp input Operating ambient temperature range: 0 to 70C Package: 16-pin VSOP (Pb free)
VCC1 IN1 GND1 IN2 GND2 GSEL IN3 GND3
1
16
OFB1 OUT1 VCC2 OFB2 OUT2 VCC3 OFB3
8
9
OUT3
APPLICATIONS
I
LCD monitor
ORDERING INFORMATION
Device SM5306AV Package 16-pin VSOP
PACKAGE DIMENSIONS
(Unit: mm)
+ 0. 0.15 - 1 0.05
4.4 0.2
6.4 0.2
0.275TYP 5.1 0.2 1.15 0.1 0 to 10
0.10
+ 0.1 0.22 - 0.05
0.12 M
SEIKO NPC CORPORATION --1
0.10 0.05
0.65
0.5 0.2
SM5306A
BLOCK DIAGRAM
VCC1 OFB1
-
0dB/6dB
OUT1
IN1
CLAMP
+
GND1
VCC2
OFB2
-
0dB/6dB
OUT2
IN2
CLAMP
+
GND2
VCC3
GSEL
-
OFB3
0dB/6dB
OUT3
IN3
CLAMP
+
GND3
PIN DESCRIPTION
Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1. I: input, O: output SEIKO NPC CORPORATION --2 Name VCC1 IN1 GND1 IN2 GND2 GSEL IN3 GND3 OUT3 OFB3 VCC3 OUT2 OFB2 VCC2 OUT1 OFB1 I/O1 - I - I - I I - O O - O O - O O Supply voltage 1 Video signal input 1 Ground 1 Video signal input 2 Ground 2 Gain select (LOW: 0dB, HIGH: + 6dB) Video signal input 3 Ground 3 Video signal output 3 Output feedback 3 (for sag compensation circuit) Supply voltage 3 Video signal output 2 Output feedback 2 (for sag compensation circuit) Supply voltage 2 Video signal output 1 Output feedback 1 (for sag compensation circuit) Description
SM5306A
PIN EQUIVALENT CIRCUIT
Number Name Equivalent circuit
2 4 7
IN1 IN2 IN3
R
6
GSEL
R
16 13 10
OFB1 OFB2 OFB3
R
R
15 12 9
OUT1 OUT2 OUT3
SEIKO NPC CORPORATION --3
SM5306A
SPECIFICATIONS
Absolute Maximum Ratings
VCC1 = VCC2 = VCC3 = VCC, GND = 0V, unless otherwise noted
Parameter Supply voltage range Input voltage range Storage temperature range Power dissipation Symbol VCC VIN TSTG PD GSEL pin Condition Rating - 0.3 to 7.0 GND - 0.3 to VCC + 0.3 - 55 to + 125 250 Unit V V C mW
Recommended Operating Conditions
Parameter Supply voltage Operating ambient temperature range Symbol VCC Ta Condition Rating 3.0 to 5.5 0 to 70 Unit V C
DC Characteristics (GSEL)
VCC = 3.0 to 5.5V, Ta = 0 to 70C, unless otherwise noted
Rating Parameter HIGH-level input voltage LOW-level input voltage Input leakage current Symbol VIH VIL ILL ILH VIN = 0V VIN = VCC Condition min VCC - 0.5 - - - typ - - - - max - 0.5 1 1 V V A A Unit
Analog Characteristics
VCC = 3.3V, Ta = 25C, RL = 150, fin = 100kHz, VIN= 1.0Vp-p, unless otherwise noted See "Measurement Circuit Diagram"
Parameter Current consumption 1 Current consumption 2 Output gain 1 Output gain 2 Channel gain error Channel crosstalk Maximum passband frequency 1 Maximum passband frequency 2 Input voltage Maximum output voltage 1 Maximum output voltage 2 Input clamp voltage Output distortion ratio Symbol ICC1 ICC2 AV1 AV2 dAV CT FPB1 FPB2 VAIN1 VOUT1 VOUT2 VCLMP THD Condition Gain = 6dB, no signal input VCC = 5.5V, Gain = 6dB, no signal input Gain = 0dB Gain = 6dB Gain = 0dB, 6dB Gain = 6dB, ratio with VOUT = 2Vp-p -1dB, gain = 0dB -1dB, gain = 6dB AC-coupled input, Gain = 0dB, 6dB Gain = 0dB, THD = 1% Gain = 6dB, THD = 1% No signal input Gain = 6dB Rating min - - - 0.5 5.5 - - 20 20 - 1.0 2.0 1.15 - typ 24 26 0 6.0 - - 65 49 23 - - - 1.35 - max 30 35 0.5 6.5 0.3 - - - 1.0 - - 1.55 1 Unit mA mA dB dB dB dB MHz MHz Vp-p Vp-p Vp-p V %
SEIKO NPC CORPORATION --4
SM5306A Measurement Circuit Diagram
+
4.7F 0.1F
+
22F INPUT1 4.7F
+
VCC1 IN1 GND1 IN2 GND2
OFB1 OUT1 VCC2 OFB2 OUT2 VCC3 OFB3 OUT3
+ +
75
75
0.1F 100F + 22F
+ +
INPUT2
4.7F
+
75
75
INPUT3
4.7F
+
GSEL IN3 GND3
0.1F 100F + 22F
+ +
75
75
100F
FUNCTIONAL DESCRIPTION
Output Gain Setting (GSEL)
GSEL pin LOW HIGH Output gain 0dB 6dB
SEIKO NPC CORPORATION --5
SM5306A
TYPICAL APPLICATION CIRCUIT
Application Circuit 1 (standard connection)
4.7F
+
4.7F
+
H L
Application Circuit 2 (capacitively-coupled display module connection)
I I
Capacitor connections to the SM5306A output pins are not required. Short circuit OUTx pins to OFBx pins. In this mode, the sag compensation circuit does not function.
Display Module
+ -
Application Circuit 3 (input connection to next stage on same printed circuit board)
I
A gain of 0dB is suitable, since matching resistors are not required. In this case, it is recommended that a 1k resistor be connected to ground.
6dB
-
22F OFB SM5306
+
Note. Only output connection is shown. SEIKO NPC CORPORATION --6
+
+
+
VCC1 4.7F IN1 OFB1 22F
+
VR CLAMP
- +
75 75
OUT1
100F
+
GND1
+
VCC2 IN2 VR GND2 CLAMP
- +
+
OFB2
22F
+
75 75
OUT2
100F
+
GSEL
VCC3
IN3
VR CLAMP
- +
OFB3
22F
+
75 75
OUT3
100F
+
GND3
Note. Capacitance does not restrict to this value.
6dB
OUT
75 75
OFB
SM5306
Note. Only output connection is shown.
+
OUT
100F 1k
SM5306A
TYPICAL CHARACTERISTICS
VCC = 3.3V, Ta = 25C, RL = 150, fin = 100kHz, VIN= 1.0Vp-p, unless otherwise noted See "Measurement Circuit Diagram"
9 6 3 Gain [dB] 0 -3 -6 -9 -12 0 1 10 Frequency [MHz] Gain Phase
10 -10 Phase [deg] -30 -50 -70 -90 -110 -130 100
9 6 3 Gain [dB] 0 -3 -6 -9 -12 0 1 Gain
Phase
10 -10 Phase [deg]
5.5
-30 -50 -70 -90 -110 -130 100
10
Frequency [MHz]
Figure 1. Frequency response (Gain = 0dB)
Figure 2. Frequency response (Gain = 6dB)
30 28 5.5V Icc [mA]
Icc [mA]
30 28 26 24 22 20
26 24 3.3V 22 20 -20 0 20 40 Ta [C] 60 80 100
3
3.5
4
4.5 Vcc [V]
5
Figure 3. ICC vs. Ta (no signal input)
Figure 4. ICC vs. VCC (no signal input)
7 6 5 Gain [dB] Gain [dB] 4 3 2 1 0 -1 -20 0 20 40 Ta [C] 60 80 100 0dB 6dB
7 6dB 6 5 4 3 2 1 0 -1 3 3.5 4 Vcc [V] 4.5 5 5.5 0dB
Figure 5. Gain vs. Ta
Figure 6. Gain vs. VCC
SEIKO NPC CORPORATION --7
SM5306A
Please pay your attention to the following points at time of using the products shown in this document. The products shown in this document (hereinafter "Products") are not intended to be used for the apparatus that exerts harmful influence on human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such use from SEIKO NPC CORPORATION (hereinafter "NPC"). Customers shall be solely responsible for, and indemnify and hold NPC free and harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties. Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document. Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products, and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested appropriately take steps to obtain required permissions or approvals from appropriate government agencies.
SEIKO NPC CORPORATION
15-6, Nihombashi-kabutocho, Chuo-ku, Tokyo 103-0026, Japan Telephone: +81-3-6667-6601 Facsimile: +81-3-6667-6611 http://www.npc.co.jp/ Email: sales@npc.co.jp
NC0307BE 2006.04
SEIKO NPC CORPORATION --8

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