PT
Pericom Technology Inc.
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Preliminary Data Sheet
PT8A260P Mixed-Signal Analog Base
PT0083(11/01)
Ver:0
1
Features
2 independent high gain op amps
On-chip window comparator
On-chip voltage reference (3.6V)
Internal 16kHz oscillator
Low battery detector
Built-in noise rejection circuit for PIR sensor
applications
16-pin DIP package
General Description
PT8A260P is a mixed-signal base chip consists of 2
high gain front end amplifier, window comparators,
voltage reference, oscillator and low battery detector.
All the analog modules are well proven and fully
characterized. With another external digital ASIC such
as FPGA, customers can verify their mixed-signal
system faster and with minimum risk.
PT8A260P is packaged in 16-pin PDIP. The outputs
from op amps, comparator, voltage reference,
oscillator, noise rejection circuit and low battery
detector are provided.
1,500 gates of digital gate are also available inside
PT8A260P. Once customers verify their mixed-mode
application/system, a single chip solution can be
integrated by PTI’s factory within 8 weeks after sign
off.
Applications
PIR sensor controller
Special sensor control
Mixed-signal ASIC with analog front end
Block Diagram
Figure 1
Voltage
Regulator
Voltage
Divider
Oscillator
Noise
Rejection
+
V
CC
GND V
EE
OP1P OP1N OP1O OP2P OP2N OP2O
VH
VL
1/2V
EE
-
+
VH
VL
1/2V
EE
OSC
-
+
-
-
+
+
RST
Reset
Low Battery
Detector
V
EE
1,500 gates
logic
Clock
divider
TE
V_TRIG
TRIG
LB
CLKO