參數(shù)資料
型號： ADS5500
英文描述： 14-Bit, 80MSPS Analog-to-Digital Converter
中文描述： 14位，80Msps模擬到數(shù)字轉(zhuǎn)換器
文件頁數(shù)： 23/30頁
文件大?。?/td> 401K
代理商： ADS5500
SBAS308A MAY 2004 REVISED MARCH 2005
www.ti.com
23
R
F
R
G
V
OCM
INP
INM
CM
R
F
R
G
R
S
ADS5542
14Bit/80MSPS
0.1
μ
F
0.1
μ
F
10
μ
F
1
μ
F
R
T
+3.3V
+5V
0.1
μ
F
10
μ
F
5V
THS4503
R
IN
R
IN
10
Figure 40. Using the THS4503 with the ADS5542
INPUT VOLTAGE OVER-STRESS
The ADS5542 can handle absolute maximum voltages
of 3.6V DC on the input pins INP and INM. For DC inputs
between 3.6V and 3.8V, a 25
resistor is required in
series with the input pins. For inputs above 3.8V, the
device can handle only transients, which need to have
less than 5% duty cycle of overstress. The input pins
connect internally to an ESD diode to AV
DD
, as well as
a switched capacitor circuit. The sampling capacitor of
the switched capacitor circuit connects to the input pins
through a switch in the sample phase. In this phase, an
input larger then 2.65V would cause the switched
capacitor circuit to present an equivalent load of a
forward biased diode to 2.65V, in series with a
60
impedance. Also, beyond the voltage on AV
DD
, the
ESD diode to AV
DD
starts to become forward biased.
In the phase where the sampling switch is off, the diode
loading from the input switched capacitor circuit is
disconnected from the pin, while the ESD loading to
AV
DD
is still present.
CAUTION:
A violation of any of the previously stated
conditions could damage the device (or reduce
its lifetime) either due to electromigration or
gate oxide integrity. Care should be taken not
to expose the device to input over-voltage for
extended periods of time as it may degrade
device reliability.
POWER SUPPLY SEQUENCE
The preferred mode of power supply sequencing is to
power-up AV
DD
first, followed by DRV
DD
. Raising both
supplies simultaneously is also a valid power supply
sequence. In the event that DRV
DD
powers up before
AV
DD
in the system, AV
DD
must power up within 10ms
of DRV
DD
.
POWER DOWN
The device will enter power-down mode in one of two
ways: either by reducing the clock speed to between DC
and 1MHz, or by setting a bit through the serial
programming interface. If reducing the clock speed,
power-down may be initiated for any clock frequency
below 10MHz. The actual frequency at which the device
powers down varies from device to device.
The device can be powered down by programming the
internal register (see
Serial Programming Interface
section). The outputs become tri-stated and only the
internal reference is powered up to shorten the
power-up time. The Power-Down mode reduces power
dissipation to a minimum of 180mW.
相關(guān)PDF資料
PDF描述
ADS5521 14-Bit, 80MSPS Analog-to-Digital Converter
ADS5522 14-Bit, 80MSPS Analog-to-Digital Converter
ADS5541 MOSFET, N SC-75AMOSFET, N SC-75A; Transistor type:MOSFET; Transistor polarity:N; Voltage, Vds max:20V; Case style:SC-75A; Current, Id cont:0.14A; Current, Idm pulse:0.5A; Power, Pd:0.25W; Resistance, Rds on:10R; SMD:1; Depth,
ADS5542 14-Bit, 80MSPS Analog-to-Digital Converter
ADS5520 14-Bit, 80MSPS Analog-to-Digital Converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS5500-EP 制造商:TI 制造商全稱:Texas Instruments 功能描述:14-BIT 125-MSPS Analog-to-digital Converter
ADS5500EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 ADS5500 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
ADS5500IPAP 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 125MSPS ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS5500IPAP 制造商:Texas Instruments 功能描述:IC 14BIT ADC 125MSPS HTQFP64 制造商:Texas Instruments 功能描述:IC, 14BIT ADC, 125MSPS, HTQFP64
ADS5500IPAPG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 125MSPS ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
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