AH8501

Document number: DS37512 Rev. 1 - 2

2 of 19

www.diodes.com

February 2015

© Diodes Incorporated

AH8501

Typical Applications Circuit

Note:

the supply pin as possible.

Pin Descriptions

Package: U-DFN2020-6

Pin Number

Pin Name

Function

1

OUTPUT

Output Pin

2

NC

No Connection (Note 5)

3

Power Supply Input

4

ENABLE

Device “Awake” and “Sleep” control pin:

An external PWM signal to the ENABLE pin controls the operating modes

(Sleep Mode, Auto-Run Mode and External Drive Mode), awake and sleep

periods to adjust the sampling rate and to minimize the power consumption

to achieve micropower operation.

When the ENABLE = GND continuously the device is in sleep mode

consuming only 8.9µA typical at 1.8V. When the ENABLE pin is left floating,

the device defaults to sleep mode. The ENABLE pin is internally pulled low.

mode with sampling rate of 6.25kHz typical consuming 1.01mA at 1.8V

In external drive mode, an external PWM signal can be used to drive the

ENABLE pin to adjust the sampling frequency up to 7.14kHz typical.

A minimum pulse width needed on ENABLE pin to start one Awake/Sleep

cycle (i.e. one sample/conversion cycle) is 20µs typical. We recommended

using a pulse width of 40µs minimum. The minimum awake period for one

sample/conversion cycle is140µs typical.

5

GND

Ground Pin

6

NC

No Connection (Note 5)

Pad

Pad

The center exposed pad – No connection internally.

The exposed pad can be left open (unconnected) or tied to the GND on the

PCB layout.

Note:

5. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.