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ZN427J8 Datasheet دیتاشیت PDF دانلود

دیتاشیت - GEC PLESSEY - MICROPROCESSOR COMPATIBLE 8-BIT SUCCESSIVE APPROXIMATION A-D CONVERTER

شماره قطعه ZN427J8
شرح مفصل MICROPROCESSOR COMPATIBLE 8-BIT SUCCESSIVE APPROXIMATION A-D CONVERTER
تولید کننده GEC PLESSEY 
آرم GEC PLESSEY 


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ZN427J8 شرح
ZN427E8 / ZN427J8
MICROPROCESSOR COMPATIBLE
8-BIT SUCCESSIVE APPROXIMATION A-D CONVERTER
DS3006 - 2.1
The ZN427 is an 8-bit successive approximation converter
with three-state outputs to permit easy interfacing to a
common data bus. The IC contains a voltage switching DAC,
a fast comparator, successive approximation logic and a
2.56V precision bandgap reference, the use of which is pin
optional to retain flexibility. An external fixed or varying
reference may therefore be substituted, thus allowing
ratiometic operation
Only passive external components are required for
operation of the converter.
FEATURES
s Easy Interfacing to Microprocessor, or Operates as a
'Stand-Alone' Converter
s Fast: 10 microseconds Conversion time Guaranteed
s No Missing Codes over Operating Temperature Range
s Data Outputs Three-State TTL Compatible, other
Logic Inputs and Output TTL and CMOS Compatible
s Choice of On-Chip or External Reference Voltage
s Ratiometric Operation
s Unipolar or Bipolar Input Ranges
s Complementary to ZN428 DAC
s Commercial or Military Temperature Range
BUSY (END OF CONVERSION) 1
RD (OUTPUT ENABLE) 2
CLOCK 3
WR (START CONVERSION) 4
REXT 5
VIN
VREF IN
6
7
VREF OUT 8
GROUND 9
18 BIT 8 (LSB)
17 BIT 7
16 BIT 6
15 BIT 5
14 BIT 4
13 BIT 3
12 BIT 2
11 BIT 1 (MSB)
10 +VCC (+5V)
ZN427J8 (DC18)
ZN427E8 (DP18)
Fig.1 Pin connection - top view
ORDERING INFORMATION
Device type Operating temperature
ZN427E8
ZN427J8
0°C to +70°C
-55°C to +125°C
Package
DP18
DC18
D TO A OUTPUT
COMPARATOR
-
VIN 6
REXT 5
CLOCK
INPUT
3
+
R-2R LADDER
ANALOGUE VOLTAGE SWITCHES
SUCCESSIVE
APPROXIMATION REGISTER
VCC
(+5V)
10
3-STATE BUFFERS
11
MSB
12
13 14
15 16 17 18
LSB
Fig.2 System diagram
+2.5V
REFERENCE
8
VREF OUT
9
GROUND
7
VREF IN
4
WR (START CONVERSION)
1
BUSY (END CONVERSION)
2
RD (OUTPUT ENABLE)

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دیتاشیت توصیه

شماره قطعه شرح مفصل تولید کنندگان
ZN427J8 MICROPROCESSOR COMPATIBLE 8-BIT SUCCESSIVE APPROXIMATION A-D CONVERTER Zarlink Semiconductor Inc
Zarlink Semiconductor Inc
ZN427J8 MICROPROCESSOR COMPATIBLE 8-BIT SUCCESSIVE APPROXIMATION A-D CONVERTER GEC PLESSEY
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