DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µ
PC659A
8-BIT A/D CONVERTER FOR VIDEO PROCESSING
WITH REFERENCE GENERATOR AND CLAMP CIRCUIT
The
µ
PC659A is a 8-bit A/D converter for video signal processing, the power consumption of which is lower than
the
µ
PC659. The high speed and high quality bipolar processing technology has enabled fast conversion rate and
high resolution to be achieved. Conversion rate is up to 20 Msps (sampling per second) and linearity error within
±0.5
LSB while operating at low power consumption. Wide variety of application can be realized in digital application field
such as digital TV system and high speed facsimile.
Also, this IC includes sample and hold circuit, clamp circuit and reference voltage generator, which enable simple
external circuit to be constructed.
The
µ
PC659A and the
µ
PC659 are different in the number of clock pulses till transformed data is output
after analog signal is captured. This should be taken into consideration when using the
µ
PC659A instead
of the
µ
PC659. For details, refer to the timing chart.
FEATURES
• Resolution
• Conversion rate
• Power supply
• Analog input voltage
• Power consumption
• Built-in circuit
: 8-bit
: 20 Msps
: +5 V
: 1.0 V
p-p
: 215 mW TYP.
: Sample and hold circuit
Clamp circuit (Clamp voltage and clamp pulse must be supplied.)
Reference voltage generator (V
RB
= 2.3 V, V
RT
= 3.3 V TYP.)
• Differential non-linearity :
±0.5
LSB MAX.
ORDERING INFORMATION
Part Number
Package
24-pin plastic SOP (300 mil)
µ
PC659AGS
The information in this document is subject to change without notice.
Document No. S10990EJ4V0DS00 (4th edition)
Date Published July 1997 N
Printed in Japan
The mark
shows major revised points.
©
1992, 1996
NEC [ NEC ]
