AD8460 datasheet(40/75 Pages) AD

Part #	AD8460

Description	110 V High Voltage, 1 A High Current, Arbitrary Waveform Generator with Integrated 14-Bit High Speed DAC

PDF	75 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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40 / 75 page

Data Sheet

AD8460

analog.com

Rev.0

40 of 75

Figure 65. Shutdown Response Time vs. Various CSDN_IO

Figure 66. Shutdown Response Sequence

MANUAL THERMAL SHUTDOWN

The AD8460 features an optional manual thermal shutdown at TJ = 150 °C without the need for SPI communication

and programming. This manual shutdown feature is only valid for thermal shutdown. The overcurrent and

overvoltage protection still require SPI communication and programming.

To enable the manual thermal shutdown, tie TMP directly to SDN_IO, as shown in Figure 67. In this configuration,

the TMP pin’s analog output voltage reaches the SDN_IO’s logic high threshold at approximately TJ = 150 °C,

activating shutdown mode. The AD8460 does not self-reset when the die temperature has cooled below 150 °C. The

AD8460 remains in shutdown until resequencing the power supplies or the SDN_IO pin.

HVCC = +50V

HVEE = –20V

IHVEE = 500mA

RLOAD = 10Ω

SDN_IO CAPACITANCE (nF)

0.01

0.1

100

0.001

0.01

0.1

ENSURE SDN_IO FLOATING

SHUTDOWN

EVENT

AD8460 Datasheet(PDF) 40 Page - Analog Devices