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DS2450S Datasheet

  • DS2450S

  • 1-Wire Quad A/D Converter

  • 24頁

  • DALLAS   DALLAS

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DS2450
1-Wire
TM
Quad A/D Converter
www.dalsemi.com
FEATURES
摟
Four high-impedance inputs to measure
analog voltages over the 1-Wire bus
摟
User programmable input range (2.56V,
5.12V), resolution (1 to 16 bits) and alarm
thresholds
摟
5V, single supply operation
摟
Very low power: 2.5 mW active, 25
碌W
idle
摟
Built-in multidrop controller allows multiple
DS2450鈥?to be identified and operated on a
s
common 1-Wire bus
摟
Responds to Conditional Search if the analog
voltage crosses the alarm thresholds
摟
Channels not used as analog input can serve
as open drain digital outputs for closed-loop
control
摟
Directly connects to a single port pin of a
microprocessor and communicates at up to
16.3k bits per second
摟
Overdrive mode boosts communication speed
to 142k bits per second
摟
On-chip 16-bit CRC-generator for
safeguarding data transfers
摟
Unique, factory-lasered and tested 64-bit
registration number (8-bit family code + 48-
bit serial number 8-bit CRC tester) assures
absolute traceability because no two parts are
alike
摟
8-bit family code specifies device
communication requirements to bus master
摟
Operating temperature range from -40擄 to
C
+85擄
C
摟
Compact, low cost 8-pin SOIC surface mount
package
PIN ASSIGNMENT
V
CC
NC
DATA
GND
1
2
3
4
8
7
6
5
AIN-D
AIN-C
AIN-B
AIN-A
8-PIN SOIC (208 MIL)
PIN DESCRIPTION
V
CC
NC
DATA
GND
AIN-A
AIN-B
AIN-C
AIN-D
4.5 to 5.5 Volts
Do Not Connect
1-Wire Bus
Ground
Analog Input A
Analog Input B
Analog Input C
Analog Input D
ORDERING INFORMATION
DS2450S
8-pin SOIC
DESCRIPTION
The DS2450 1-Wire Quad A/D Converter is based on a successive-approximation analog to digital
converter with a four to one analog multiplexer. Each input channel has its own register set to store the
input voltage range, resolution, and alarm threshold values as well as flags to enable participation of the
device in the conditional search if the input voltage leaves the specified range. Two alarm flags for each
channel indicate if the voltage measured was too high or too low without requiring the bus master to do
1 of 24
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DS2450S 產(chǎn)品屬性

  • 88

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 16

  • 1k

  • 串行

  • 1

  • 2.5mW

  • 單電源

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-SOIC（0.209"，5.30mm 寬）

  • 8-SOIC

  • 管件

  • 4 個單端，單極

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