Datasheet

UNISONIC TECHNOLOGIES CO., LTD
VF8146
Preliminary
CMOS IC
LOW-COST SIX-CHANNEL
4TH-ORDER STANDARDDEFINITION VIDEO FILTERS

DESCRIPTION
The UTC VF8146 Low-Cost Video Filter (LCVF) offers six
channels of 4th-order filters for standard-definition and drivers with
a low-cost integrated device.
The UTC VF8146 inputs feature a transparent clamp compatible
with AC- coupled and DC-coupled input signals and allows DAC
outputs to be directly coupled.
The outputs can drive AC- or DC-coupled single (150Ω) or dual
(75Ω) loads. The input DC levels are offset approximately +280mV
at the output (see Applications section for details).
The UTC VF8146 is ideal for DAC smoothing in applications
such as cable set-top boxes, satellite set-top boxes, HDTV, video
on demand (VOD), DVD players, and personal video recorders.

FEATURES
* Six-Channel 4th-order 8MHz filters for standard-Definition video
* Transparent input clamping
* AC-or DC-coupled inputs
* AC-or DC-coupled outputs
* Drives single, +6dB output (150Ω)
* Drives dual, +6dB output (75Ω)
* DC-coupled outputs eliminate AC-coupling capacitors
* Single +5V power supply

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
VF8146L-P14-R
VF8146G-P14-R
VF8146L-P14-T
VF8146G-P14-T
VF8146L-P14-T
Package
Packing
TSSOP-14
TSSOP-14
Tape Reel
Tube
(1)Packing Type
(1) T: Tube, R: Tape Reel
(2)Package Type
(2) P14: TSSOP-14
(3)Halogen Free
(3) L: Lead Free, G: Halogen Free
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Copyright © 2013 Unisonic Technologies Co., Ltd
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VF8146
Preliminary

PIN CONFIGURATION

PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PIN NAME
IN1
IN2
IN3
VCC
IN4
IN5
IN6
OUT6
OUT5
OUT4
GND
OUT3
OUT2
OUT1
CMOS IC
DESCRIPTION
Video input, Channel 1
Video input, Channel 2
Video input, Channel 3
+5V Power Supply, do not float
Video input, Channel 4
Video input, Channel 5
Video input, Channel 6
Filtered video output, Channel 6
Filtered video output, Channel 5
Filtered video output, Channel 4
Ground, do not float
Filtered video output, Channel 3
Filtered video output, Channel 2
Filtered video output, Channel 1
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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VF8146

Preliminary
CMOS IC
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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VF8146

Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
DC Supply Voltage
VCC
-0.3~6
V
Analog and Digital I/O
-0.3~VCC+0.3
V
Output Channel-Any One Channel (Do Not Exceed)
50
mA
Junction Temperature
TJ
+150
°C
Operating Temperature
TOPR
-40~+85
°C
Storage Temperature
TSTG
-65~+150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

THERMAL DATA
PARAMETER
Thermal Resistance, JEDEC Standard Multi-layer
Test Boards, Still Air

RATINGS
UNIT
θJA
90
°C/W
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VCC Range

SYMBOL
TEST CONDITIONS
MIN
+4.75
TYP
+5.0
MAX
+5.25
UNIT
V
DC ELECTRICAL CHARACTERISTICS
(TA=25°C, VCC=5V, RSOURCE=37.5Ω, all inputs are AC coupled with 0.1μF, all outputs are AC coupled with 220μF into
150Ω loads, unless otherwise noted.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Supply Current (Note 1)
ICC
No Load
35
55
mA
Video Input Voltage Range
VIN
Referenced to GND if DC coupled
1.4
VPP
Power Supply Rejection
PSRR DC (All Channels)
-50
dB
Note: 1. 100% tested at 25°C.

AC ELECTRICAL CHARACTERISTICS
(TA=25°C, VIN=1VPP, VCC=5V, RSOURCE=37.5Ω, all inputs are AC coupled with 0.1μF, all outputs are AC coupled with
220μF into 150Ω loads, unless otherwise noted.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Channel Gain (Note 1)
AV
All Channels
6.0
6.2
6.4
dB
-1dB Bandwidth (Note 1)
f1dB
All Channels
4.5
6.8
MHz
-3dB Bandwidth
fc
All Channels
7.8
MHz
Attenuation (Stopband Reject)
fSB
All Channels at f=27MHz
48
dB
Differential Gain
dG
All Channels
0.3
%
Differential Phase
dΦ
All Channels
0.6
°
Output Distortion (All
THD
VOUT=1.8VPP, 1MHz
0.4
%
Channels)
Crosstalk
XTALK at 1MHz
-60
dB
(Channel-to-Channel)
All Channels NTC-7 Weighting:
75
dB
Signal-to-Noise Ratio
SNR
100kHz~4.2MHz
Propagation Delay
tpd
Delay from Input-to-Output, 4.5MHz
59
ns
Note: 1. 100% tested at 25°C.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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
Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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