參數(shù)資料
型號(hào)： AD5560JSVUZ-REEL
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 27/68頁(yè)
文件大?。?/td> 0K
描述： IC DPS PROGRAMABLE W/DAC 64TQFP
設(shè)計(jì)資源： Integrated Device Power Supply for PAD with Output Voltage Range 0 V to 25 V (CN0130)
標(biāo)準(zhǔn)包裝： 1,500
類型： 電源
應(yīng)用： 自動(dòng)測(cè)試設(shè)備
安裝類型： 表面貼裝
封裝/外殼： 64-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝： 64-TQFP-EP（10x10）
包裝： 帶卷 (TR)
Data Sheet
AD5560
Rev. D | Page 33 of 68
DIE TEMPERATURE SENSOR AND THERMAL
SHUTDOWN
There are three types of temperature sensors in the AD5560.
The first is a temperature sensor available on the MEASOUT
pin and expressed in voltage terms. Nominally at 25°C, this
sensor reads 1.54 V. It has a temperature coefficient of
4.7 mV/°C. This sensor is active during power-down mode.
Die Temp = (VMEASOUT(TSENSE) 1.54)/0.0047 + 25°C
Based on typical temperature sensor output voltage at
25°C and output scaling factor.
The second type of temperature sensor is related to the
thermal shutdown feature in the device. Here, there are
sensors located in the middle of the enabled power stage,
which are used to trip the thermal shutdown. The thermal
shutdown feature senses only the power stages, and the power
stage that it senses is determined by the active stage.
If ranges of <25 mA are selected, the EXTFORCE1 sensor is
monitored. The EXTFORCE1 power stage itself is made
up of three identical stages, but the thermal shutdown is
activated by only one stage (EXTFORCE1B). Similarly, the
EXTFORCE2 stage is made up of two identical output
stages, but the thermal shutdown can be activated by only
one stage (EXTFORCE2A).
The thermal shutdown circuit monitors these sensors and,
in the event of the die temperature exceeding the program-
mable threshold temperature (100°C, 110°C, 120°C, 130°C
(default)), the device protects itself by inhibiting the force
amplifier stage, clearing SW-INH in DPS Register 1 and
flagging the overtemperature event via the open-drain
TMPALM pin, which can be programmed to be either
latched or unlatched. These temperature sensors can be
read via the MEASOUT pin by selecting them in the
diagnostic register (Table 23, VPTAT low and VPTAT
high). They are expressed in voltage and to scale to
temperature. They must be referred to the VTSD reference
voltage levels (see Table 23) also available on MEASOUT.
This set of sensors is not active in power-down mode.
Die Temp_y = {(VPTAT_x VTSD_low)/[(VTSD_high
VTSD_low)/(Temp_high – Temp_low)]} + Temp_low
where:
x, y are (high, NPN) and (low, PNP).
Temp_low = 273°C.
Temp_high = +130°C.
The third set of temperature sensors is an array of thermal
diodes scattered across the die. These diodes allow the user
to evaluate the temperature of different parts of the die and
are of great use to determine the temperature gradients
across the die and the temperature of the accurate portions
of the die when the device is dissipating high power. For
further details on the thermal array and locations, see the
diagnostic register section in Table 23.
These diodes can be muxed out onto the GPO pin. The
diagnostic register (Address 0x7) details the addressing and
location of the diodes. These can be used for diagnostic
purposes to determine the thermal gradients across the die
and across a board containing many AD5560 devices. When
selected, the anode of each diode is connected to GPO and
the cathode to AGND. The AD5560 evaluation board uses
the ON Semiconductor ADT7461 temperature sensor for
the purpose of analyzing the temperature at different
points across the die.
Note that, when a thermal shutdown occurs, as the force
amplifier is inhibited or tristated, user intervention is required
to reactivate the device. It is necessary to clear the temperature
alarm flag by issuing a read command of Register Address 0x44
(alarm status and clear alarm status register, Table 25), and
then issuing a new write to the DPS Register 1 (SW-INH = 1)
to reenable the force amplifier.
See also the Thermal Considerations section.
MEASURE OUTPUT (MEASOUT)
The measured DUT voltage, current (voltage representation
of DUT current), KSENSE, or die temperature is available on
MEASOUT with respect to AGND. The default MEASOUT
range is the forced voltage range for voltage measure and
current measure (nominally ±12.81 V, depending on reference
voltage and offset DAC) and includes overrange to allow for
system error correction.
The serial interface allows the user to select another MEASOUT
range of (1.025 × VREF) to AGND; this range is suitable for use
with an ADC with a smaller input range.
To allow for system error correction, there is additional gain
for the force function. If this overrange is used as intended,
the output range on MEASOUT scales accordingly.
The MEASOUT line can be tristated via the serial interface.
When using low supply voltages, ensure that there is sufficient
headroom and footroom for the required force voltage range.
VMID VOLTAGE
The midcode voltage (VMID) is used in the measure current
amplifier block to center the current ranges at about 0 A.
This is required to ensure that the quoted current ranges can
be achieved when using offset DAC settings other than the
default. VMID corresponds to 0x8000 or the DAC midcode
value, that is, the middle of the voltage range set by the offset
DAC setting (see Table 15 and Figure 56).
VMID = 5.125 × VREF × (32,768/216) (5.125 × VREF ×
(OFFSET_DAC_CODE/216))
or
VMID = 5.125 × VREF × ((32,768 Offset DAC)/216)
相關(guān)PDF資料
PDF描述
AD557JN IC DAC 8BIT V-OUT 16-DIP
AD561KD IC DAC 10BIT 5-15V IN MONO 16DIP
AD565AKD IC DAC 12BIT MONO 250NS 24-CDIP
AD5663BCPZ-R2 IC DAC NANO 16BIT DUAL 10-LFCSP
AD5678BRUZ-1 IC DAC 12/16BIT SPI/SRL 14TSSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD5561JBCZ 制造商:Analog Devices 功能描述:
AD5562ACPZ-R7 制造商:Analog Devices 功能描述:
AD5564B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC
AD557 制造商:AD 制造商全稱:Analog Devices 功能描述:a DACPORT Low Cost, Complete uP-Compatible 8-Bit DAC
AD557_01 制造商:AD 制造商全稱:Analog Devices 功能描述:a DACPORT Low Cost, Complete uP-Compatible 8-Bit DAC
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*