ZXFV4089N8TC Diodes Zetex, ZXFV4089N8TC Datasheet - Page 10

• Manufacturer Part Number: ZXFV4089N8TC
• Description: IC AMP DC RESTORATION SO8
• Manufacturer: Diodes Zetex

Specifications of ZXFV4089N8TC

• Applications: DC Restoration
• Number Of Circuits: 1
• -3db Bandwidth: 210MHz
• Slew Rate: 400 V/µs
• Current - Supply: 8mA
• Current - Output / Channel: 40mA
• Voltage - Supply, Single/dual (±): ±4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Single Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (typ): ±5V
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC
• For Use With: ZXFV4583EV - BOARD EVAL FOR ZXFV4583/ZXFV4089
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ZXFV4089N8TCTR

ZXFV4089
Attention is drawn to the footnote of the DC electrical characteristics table, regarding input signal
amplitude. The video signal is ac coupled into the main amplifier and clamped to V
. As a result
REF
of this the actual voltage seen by the device input at pin 2 is the sum of V
plus the video input
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signal voltage excursion above V
(when clamping the back porch, this excursion is normally
REF
the luminance waveform of up to about 0.72V white level). At a particular positive value at pin 2
close to 2.7V, the leakage current of the Sample-hold switch increases causing an increase in the
droop rate. Therefore, for example, a reference voltage of 2V with a peak white video signal of
0.7V could result in increased restoration error arising from the increased DC offset. If pin 2 is
driven above +2.7V peak voltage the DC restoration accuracy could be affected and care should
be taken in this respect. When using 0.7V luminance, this is consistent with the maximum
recommended reference voltage of +2V.
Evaluation circuit
An evaluation circuit is available to allow demonstration of the video black-level clamping
function. The circuit uses the Zetex ZXFV4583 sync separator circuit to provide the HOLD function
timing signal. This circuit is described in the datasheet for ZXFV4583. To order the evaluation
board, ask for ZXFV4583EV.
Issue 4 - December 2008
10
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