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參數(shù)資料
| 型號： | UZZ9000 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Sensor Conditioning Electronic(傳感器調(diào)節(jié)芯片) |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | SO-24 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 69K |
| 代理商： | UZZ9000 |
2000 May 19
9
Philips Semiconductors
Preliminary specification
Sensor Conditioning Electronic
UZZ9000
Table 4
Programming of trim modes
MODE
STATUS BITS
1
2
3
4
5
enter trim mode for sensor input channel 1
enter trim mode for sensor input channel 2
leave trim mode for either input channel
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
Reset
In addition to the external reset pin (pin 6), the UZZ9001
provides an internal power-up/ power-down reset logic
which continuously monitors the supply voltage. When the
supply voltage increases and reaches a safe level, reset
becomes inactive and the device starts initialization. When
the supply voltage exceeds the safe voltage level, the
deviceisresetimmediately.Thisinternalresetlogiccanbe
over-ridden by the external pin RES (pin 6) in all modes
and at any time. The reset pin RES (pin 6) is active when
in the high position. It is internally pulled to ground and
therefore need not be connected if the function is not
required.
Diagnostic
The UZZ9000 provides powerful diagnostics features that
allow the user to recognize certain failures of the device or
system. A failure will occur when the output voltage V
OUT
either rises above or falls below the normal operation
range. Either one of the diagnostic areas is reached during
any of the following conditions
1.
Short circuit between V
OUT
and GND (R < 1
).
2.
Short circuit between V
OUT
and V
DD
(R < 1
).
3.
Disconnection of V
DD
when the load is pulled down.
4.
Disconnection of GND when the load is pulled up.
5.
Invalid input signal from the sensor, e.g. Magnet Lost.
This failure isassumed when the offsetcorrected input
signal of sensor 1 and sensor 2 is below
±
15 mV.
The internal pull-up and pull-down resistors in the output
buffer block ensure that V
OUT
will be pulled to one of the
power supplies when the other supply is disconnected so
V
OUT
reaches the diagnostic region even when there is no
outputload.Iftheexternalloadisapull-downresistor,then
the device enters into the diagnostic area if V
DD
is
disconnected, but not if V
SS
is disconnected. Similarly, if
the load is a pull-up resistor, then the device will enter the
diagnostic area if V
SS
is disconnected, but not if V
DD
is
disconnected.Itisnotnecessary toconnectanoutputload
to the UZZ9000. After recovering from short circuit to
ground or supply voltage, the chip returns undamaged to
the normal operation mode. There is no time limitation
regarding short circuit of V
OUT
.
Measurement dynamics
The UZZ9000 includes an on-chip RC Oscillator that
generates the clock for the whole device. Consequently,
no external clock supply is required for the measurement
system. The nominal clock frequency of the on-chip
oscillator is 4 MHz at room temperature. It varies with
temperature change. At
40
°
C the clock frequency may
decrease to 2.3 MHz. At higher temperatures however, a
frequency up to 5.7 MHz may be reached. This influences
the dynamics of measurements. From an application point
of view, two different effects have to be distinguished: The
system delay, which means how long it takes until a
changed input signal is recognized at the output, and the
measurement update rate. The system delay is mainly
caused by the settling time of the low pass decimation
filter, which depends on the maximum frequency content
(shape) of the input signals and the clock frequency. The
following maximum values can be expected for the entire
system delay. The measurement update rate, however, is
directly related to the oscillator frequency. At room
temperature, a new value is available every 0.26 ms.
When taking the entire temperature range into account,
updateratesbetween0.45 and 0.18 msarepossible.(see
Table 5).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UZZ9001 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Sensor Conditioning Electronic |
| UZZ9001,118 | 功能描述:ELECTRONIC CONDITIONING SENSOR RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
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