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  • 1/f noise of the ADM7150/ADM7151 be reduced?
  • ADIsimPE Powering Dual Supplies Precision ADCs
  • ADIsimPE support
  • ADIsimPower Design Tools Download
  • ADIsimPower user guide 832
  • ADIsimPower user guide 842
  • Adjustable vs. fixed voltage option
  • ADM1030: Lowest pull resistor
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  • ADM1031: Unused D+ and D+ pins
  • ADM1060 Power Sequencer support for USB interface
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  • ADM1166 - CRC, configuration, EEPROM and RAM at startup query
  • ADM1166 Sequencing differential voltage query  (SR#: 1239446)
  • ADM1171: Current limit device
  • ADM1175_Vbus spec
  • ADM1232: Spikes on VCC
  • ADM1816: Voltage on reset line does not go to zero until the supply is approx 1V
  • ADM2483_ESD AB impedance
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  • ADM2484 revA board
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  • ADM2587E isolation ratings
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  • ADM2587E power consumption
  • ADM2587E Power consumption (1)
  • ADM2682E start up currents
  • ADM2682E/ADM2687E Creepage and Clearance
  • ADM2682E/ADM2687E Isolation Voltage
  • ADM2682E/ADM2687E providing additional current to external devices
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  • ADM3053 stitching capacitance
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  • ADM3251 heat generation
  • ADM3251E - Prevent - minimize EMI isses
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  • ADM3251_application high working temperature
  • ADM3252: Detecting the cable connection
  • ADM3491: Is resistor Rt needed between Y and Z (transmitter side) or only on the receiver side?
  • ADM4073T: Settling Time
  • ADM483E: Operation in fail safe mode
  • ADM485 - how does the fail-safe feature mentioned in the datasheet work
  • ADM6320CX and WDI query/comments(SR#: 1200246)
  • ADM696: Datasheet reset assertion guarantee
  • ADM706: IBIS model
  • ADM706: what happens if WDI Pin is left open or "High Impedance"
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  • ADM709RAR_theta JA & theta JC
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  • ADM869L: absolute maximum ratings
  • ADP-I2C-USB _USB to I2C Interface Connector
  • ADP1046 Daughter Board compatible with existing one for ADP1043
  • ADP1048 - is is possible to use the ADP1048 with higher input frequencies?
  • ADP1048: Which control mode is used: continous current or  discontinuous current?
  • ADP1051: EEPROM programming procedure
  • ADP125 and ESR values
  • ADP130: Does the datasheet undervoltage lockout spec apply to Vin or Vbias?
  • ADP160-IGND Max
  • ADP1607 reverse current protection with EN high/low
  • ADP1607 to supply ADAU1761
  • ADP1621 and ADP2300/01: positive to negative conversion
  • ADP1829 Dual buck controller with a high side N channel FET
  • ADP197:
  • ADP198  What happens when Vout > Vin ?
  • ADP2108 layout considerations (high frequency switching regulator layout considerations)
  • ADP2118: fixed Output FB Pin
  • ADP2384, ADP2386 - Benefits of hiccup mode during over current/short circuit
  • ADP2384, ADP2386 - Deglitch time when PGOOD reversing
  • ADP2384, ADP2386 - Fastest soft start time
  • ADP2384, ADP2386 - Leaving RT pin open
  • ADP2384, ADP2386 - PGOOD feature
  • ADP2384, ADP2386 - PGOOD pin open
  • ADP2384, ADP2386 - Programming soft start time
  • ADP2384, ADP2386 - Setting the switching frequency
  • ADP2384, ADP2386 - SS pin unconnected
  • ADP2384, ADP2386 - Treatment of GND-EP (pin 25) and SW-EP (pin 26)
  • ADP2384, ADP2386 - Use of EN threshold to set input voltage UVLO
  • ADP2386, ADP2384 - Support of pre-charge start up
  • ADP2441 External Diode between SW and PGND
  • ADP2441 Floating Pins
  • ADP2441 Minimum ON Time
  • ADP2441 Peak Current Limit
  • ADP2441 Precharge Startup
  • ADP2441 VCC Pin
  • ADP2441: Factors to Improve Efficiency
  • ADP2441ACPZ-R7 Power Dissipation
  • ADP2504  Issues with supplied current and current limiting
  • ADP3040 - information available?
  • ADP3302: Input protection
  • ADP3330: max reverse voltage
  • ADP3330: Reverse current
  • ADP3338: Thermal and overcurrent protections
  • ADP5046 shuts down
  • ADP5050 considerations for simulations under Simplis
  • ADP5050 Pin20 as address pin
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  • ADP5090_91: Need to cut the load of ADP5090 if temperature is under 0�C and above 40�C for Li-Ion Battery Charging
  • ADP5585 interrupt (/INT pin) not asserting
  • ADP5588_work under 3.3V
  • ADP7112: Materials declaration is missing from ADP7112 web page
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  • any isolated RS-422 driver with no bit errors during EFT test?
  • Are any external components required?
  • Are there any layout considerations when designing in the ADP5052?
  • Are these devices automotive replacements for the ADM6316/18/19/20/21/22 parts?
  • Boost converter recommendation
  • CAN FD version of ADM3053
  • Can I configure ADM3491 in half duplex mode of operation
  • Can the 4 bucks run at different frequency?
  • Can the ADP1047/8 be used as a three-phase PFC controller?
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  • Can the CS1 pin of the ADP1043A, ADP1046A, ADP1050, ADP1051, ADP1055 be floating?
  • Can the voltage VS- pin (VS3- for ADP1046A) of ADP1050/51/55 operate at a voltage higher than 0.3V?
  • Can you supply PVIN1, PVIN2, PVIN3, PVIN4 and PVIN5 independently?
  • Can you use an inductor not specified in the datasheet?
  • Customer programmable fuses on ADP5053?
  • DAC power up default state of ADM1066
  • Difference between ADM2682E and ADM2687E
  • Does the output noise of the ADM7154/ADM7155 scale with the output voltage?
  • Drivers for Linux, No-OS microcontrollers and FPGA
  • Emissions by ADM2582E at 1.5GHz .. 1.1GHz
  • Explanation on ADM3483 Driver Output/Receiver Input Voltage
  • FAQ: Can I use the square wave at 50% duty cycle to sync with the ADP1047/48?
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  • Green idle power saving
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  • How are the datasheets split out for these products?
  • How can I disable one channel when I don't' use it?
  • How close to drop out voltage can one operate an LDO in order to squeeze the last ounce out of my circuits efficiency?
  • How close to drop out voltage can one operate an LDO in order to squeeze the last ounce out of my circuits efficiency? (1)
  • How Do I Generate Negative Supplies?
  • How does the windowed watchdog operate at power up or after a reset event?
  • How is the output noise spectral density of a low noise LDO measured?
  • How is the output noise spectral density of an ultra-low noise LDO measured?
  • How is the RMS output noise of a low noise LDO measured?
  • How is the RMS output noise of an ultra-low noise LDO measured?
  • How much current can the ADN8831 supply to a TEC?
  • How should I connect ADM2483's Power Valid Pin (PVP) when not using it?
  • How to handle the sequence in ADP5052?
  • How to use the ADIsimPower design tools with ADIsimPE integration
  • Ib +- of Op
  • Inquiry on MAX Junction Temp Ratings.
  • Interface box for ADM1062 Sequencer
  • Is it possible to disable the watchdog functionality if not required?
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  • Is there any guideline for EEPROM programming and factory calibration for ADP1050 and ADP1051?
  • Isolated DC-DC Power Supply 20W, 36-72V Input , 5V output
  • Key difference between the ADM268xE and ADM258xE
  • level of automotive qualification do these parts have?
  • LT3439 Power Dissipation Calculation
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  • Measuring Signals in a Switching Power Supply
  • Minimum Load Current Operation - Zero load Operation
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  • Power by Linear Support Community INTRO
  • Power Management solution for Altera Arria 10 FPGA
  • Powering Analog circuit through SMPS.
  • Product Analog Devices USB-SMBUS-CABLEZ.
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  • Ref design recommendation
  • selecting an external FET?
  • soldering temperature and soldering time
  • Thermal Information
  • Thermal Information of ADR01TUJZ-EP-R7
  • Typical markets/applications for this device
  • USB-SDP-CABLEZ software installer link is broken on User Guide.
  • Use ADM1062's ADC from inputs VX1-5, VP1-4, VH & Temp sensor without averaging?
  • Voltage Regulator for 16-bit ADC AD7626
  • VPx input impedance of ADM1069
  • What are "Standard models" listed in the datasheets?
  • What is ADIsimPower?
  • what is the best digital controller for  isolated boost mode current fed converter?
  • What is the difference between MTBF and MTTF?
  • What type of passive filters can be added to the output of a linear regulator without causing instability?
  • What's the ADP3634's internal driver's resistance, Rdson?
  • What's the big differentiation for ADP5052 in the market?
  • Where can I find a programming procedure to implement EEPROM programming of  ADP1051?
  • Where can I find the ADP1870 EVB Gerber Files?
  • Where can I find the Package/Leadframe material information for ADR225HFZ (8 ld Ceramic Flatpack)?
  • Why would a customer require a windowed watchdog part over a normal watchdog?

ADM2587E Power consumption (1)

Q 

I'm designing a battery operated product that will utilize 7 of your RS485
transceiver ADM2587E.

I want to know the power consumption for this IC when:
A) There is no traffic but the circuit is ready to receive/send.
B) DE and !RE have been disabled so that both blocks are disabled.

Is there any way to put the IC into some sort of sleep or low-power mode?

 

A 

We have made the following assumptions for the power consumption questions that
you have:
a) There is no traffic but the circuit is ready to receive/send. This means
that DE is tied to 0V (disabled), and !RE is tied to 0V (enabled).
b) DE and !RE have been disabled so that both blocks are disabled. This means
that DE is tied to 0V (disabled), and !RE is tied to  Vcc (5V) (disabled).

We made some typical measurements for both cases using one of our evaluation
boards in the lab.
For both cases a) and b) above we used an evaluation board EVAL-ADM2587EEBZ
Rev.A, with Vcc at 5V.
For case a) we measured 8mA as the current drawn from the power supply. For a
Vcc of 5V, with P = VI, this gives 40mW as the power consumption for this mode
of operation.
For case b) we measured 9mA as the current drawn from the power supply. For a
Vcc of 5V, with P = VI, this gives 45mW as the power consumption for this mode
of operation.

For the ADM2587E there is no specific way to activate a sleep/low power mode.
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Top Comments

  • RAnslow
    RAnslow
    •  Analog Employees 
    over 3 years ago in reply to OTI +2

    Hi OTI,

    Yes, I can check this in the lab. I can provide you with typical values only (not guaranteed production test values).

    Best regards,

    Richard

  • testurc
    testurc over 3 years ago

    I am working on an existing product using the ADM2587E chip.  We are noticing in a new batch of boards that the chip sometimes takes more current to turn on - specifically as the input voltage on the chip is increased from 2.0V to 5.0V the current consumption peaks around 2.6 to 2.8 V in the 31 mA range.    It is interesting to watch the sudden current drop as you cross the ~2.85V threshold for the chip - current almost drops in half from about 31mA to about 15 mA.   

    We have a current limited supply due to how we are using the chip and this is causing us problems with about 1 in 40 units.  We have 10uF on input and output and a current limit of 40 mA for the input power.  We have attempted to reduce that amount but for all units this does not work, even when the input and output capacitance on the chip is reduced to 0.2uF sometimes they will try to draw more current than our board allows.  We do realize this non standard way of using the chips is probably not the greatest practice.  

    Does anyone have experience with startup current variation between these chips lot to lot or chip to chip or is anyone aware of a minimum startup current requirement for these chips over voltage.

    Thanks,

    Steve

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  • RAnslow
    RAnslow
    •  Analog Employees 
    over 3 years ago in reply to OTI

    Hi OTI,

    These are typical lab  measurements, at +25C:

    At 3.3 V Vcc: the Icc is about 15mA for a 76.5 kbps data rate.

    At 5.0 V Vcc: the Icc is about 13mA for a 76.5 kbps data rate.

    This is for your requested condition DE = /RE = 0 V

    Best regards,

    Richard

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  • OTI
    OTI over 3 years ago in reply to RAnslow

    Thank you.

    I look forward to a result

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  • RAnslow
    RAnslow
    •  Analog Employees 
    over 3 years ago in reply to OTI

    Hi OTI,

    Yes, I can check this in the lab. I can provide you with typical values only (not guaranteed production test values).

    Best regards,

    Richard

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  • OTI
    OTI over 3 years ago

    Hi,I want to know ADM2587E Power consumption when I receive data

    Condition: DE is tied to 0V (disabled), and !RE is tied to 0V (enabled).、Data Rate ≤ 500 kbps (I hope 76.5Kbps)

    Would you tell me the consumption electric current?

    Furthermore, would you tell me maximum , too?

    (It is not a guarantee, the reference level is all right)

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