M655 Ver la hoja de datos (PDF) - Mitsumi
Número de pieza
componentes Descripción
Fabricante
M655 Datasheet PDF : 7 Pages
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CURRENT SETTING RESISTOR (Rref) AND
OUTPUT LOAD RESISTOR (RL) (external components)
Full-scale output amplitude (VFS) of each D/A converter is ;
VFS = (VG / Rref) x 16 x RL (VP-P).
where VG = 1.28 V, Rref = 768 Ω, RL = 75 Ω and VDD = 5.0V.
The full-scale output of about 2.0 VP-P is available by setting RL and
Rref to 75 Ω and 768 Ω, respectively.
An output impedance of the analog output terminal is almost the
same as the load resistor (RL).
NOTES TO THE OPERATION
1. Both a ground and a supply planes in a PCB should be as wide
as possible for reducing a parasitic inductance and resistance.
Especially, for the better performance, the analog plane needs to
be much wider.
2. A tantalum or electrolytic capacitor of 10µF or more and a
ceramic capacitor of 0.01µF are tied together, which are
connected between a digital supply and ground, also between a
analog supply and ground.
These capacitors should be placed as close as possible to the
IC.
They work as bypass capacitors for preventing a degradation in
the performance by a supply voltage
fluctuation caused by digital signals including a clock and digital
inputs and so on.
3. The analog output should be isolated as much as possible from a
clock and digital inputs, thus minimizing decoupling and
interactive noise.
MITSUBISHI ICs (AV COMMON)
M65530FP
TRIPLE 10-BIT VIDEO D-A CONVERTER
6
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