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參數(shù)資料
| 型號： | MP3276 |
| 廠商： | Exar Corporation |
| 英文描述： | Fault Protected 16 Channel, 12-Bit Data Acquisition Subsystem |
| 中文描述： | 故障保護(hù)16頻道，12位數(shù)據(jù)采集子系統(tǒng) |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 170K |
| 代理商： | MP3276 |
MP3276
1
Rev. 4.00
Fault Protected 16 Channel, 12-Bit
Data Acquisition Subsystem
FEATURES
Fault Protected 16-Channel 12-Bit A/D
Converter with Sample & Hold, Reference,
Clock and 3-state Outputs
Fast Conversion, less than 15
μ
S
Microprocessor Bus Interface
2’s Complement Data Output
Parallel or Serial Data Output Modes
65 ns Bus Access Time
Remote Analog Ground Sensing
Overvoltage Protected Input (
ply Voltages)
Precision Reference for Long Term Stability and
Low Gain T.C.
Guaranteed Linearity Over Temperature
Guaranteed Performance at +12/–5 V,
±
12 &
±
15 V
Low Power: 110 mW typ. (7 mW per Channel typ.)
32 Channel Version: MP3274
50 V over the Sup-
GENERAL DESCRIPTION
The MP3276 is a complete 16-channel, 12-bit Data Acquisi-
tion Subsystem with 3-state output buffers for direct interfacing
to 16-bit microprocessor buses. Implemented using an ad-
vanced BiCMOS process, the converter combines a 16-channel
passive overvoltage protected multiplexer instrumentation amp,
a sample & hold, a SAR, a 12-bit decoded D/A, a comparator, a
precision reference and the control logic to achieve an accurate
repeated conversion in less than 15
μ
s, and a mux/instrumenta-
tion amp settling period of less than 10
μ
s.
A unique input design provides input overvoltage protection
to 50 V over the supply voltages. The circuit design can allow
for an overvoltage condition on unselected channels without dis-
rupting the measured channel or operation of the MP3276! The
internal 4 V reference has sufficient output current to provide
other system reference needs. Precision thin film scaling and
offset resistors are laser trimmed to provide for less than 2 LSB
INL for +10 V inputs on all channels.
In addition, the MP3276 will output either full scale (0111 ....)
for overrange and – full scale (1000....) for underrange condi-
tions. This greatly simplifies microprocessor software develop-
ment.
SIMPLIFIED BLOCK DIAGRAM
–
+
Comp
SAR
4 V
REF
16
4
16 Ch.
MUX
AB0-3
(4 pins)
AIN0-15
(16 pins)
REF OUT
Control
Logic
GND REF.
DGND
V
EE
VDAC
Latch/
Shift Register
3-state
Drivers
12
DB0-DB11
REF IN /2
12
V
DD
V
CC
CLK
WR RD
CS
PXS
ADEN
STL
STS
AGND
V
REF
AGND
2
AGND
3
AGND
GND
REF IN
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|---|---|
| MP3276AG | Fault Protected 16 Channel, 12-Bit Data Acquisition Subsystem |
| MP3276AP | Fault Protected 16 Channel, 12-Bit Data Acquisition Subsystem |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MP3276AG | 制造商:EXAR 制造商全稱:EXAR 功能描述:Fault Protected 16 Channel, 12-Bit Data Acquisition Subsystem |
| MP3276AP | 制造商:EXAR 制造商全稱:EXAR 功能描述:Fault Protected 16 Channel, 12-Bit Data Acquisition Subsystem |
| MP327B | 功能描述:晶體 32.768MHz 18pF 30ppm -20/70 RoHS:否 制造商:AVX 頻率:26 MHz 容差: 頻率穩(wěn)定性:50 PPM 負(fù)載電容:8 pF 端接類型:SMD/SMT 封裝 / 箱體:1210 (3225 metric) 工作溫度范圍:- 40 C to + 150 C 尺寸:2.5 mm W x 3.2 mm L x 0.85 mm H 封裝:Reel |
| MP327B-E | 功能描述:晶體 32.768MHz 18pF 30ppm -40/85 RoHS:否 制造商:AVX 頻率:26 MHz 容差: 頻率穩(wěn)定性:50 PPM 負(fù)載電容:8 pF 端接類型:SMD/SMT 封裝 / 箱體:1210 (3225 metric) 工作溫度范圍:- 40 C to + 150 C 尺寸:2.5 mm W x 3.2 mm L x 0.85 mm H 封裝:Reel |
| MP330 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Film Resistors |
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