Digilent 410-243P Manual do Utilizador descarregar pdf (Página 2)

PmodAD5 Reference Manual

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The PmodAD5 uses the 2.5VDC reference

present on REFIN1+ and REFIN2- by default.

Note: Please see the PmodAD5 schematic,

available from www.digilentinc.com, for more

detailed information on GPO and Reference

Supply routing.

Synchronization

Setting the SYNC pin to a logic low puts the

PmodAD5 in a standby state. Once you set the

pin to logic high, the PmodAD5 will begin

gathering samples. The conversion mode

(either single or continuous) must be set

previously.

Bridge Power Down Switch

Operators can use the bridge power down

switch to control external circuitry driving the

analog inputs. Closing this “switch” internally

ties the BPDSW signal to ground.

Analog Supply Voltage

Customers can connect an analog supply

voltage at header J4, if JP1 remains open. You

must keep this external voltage between 3.0V

and 5.25V to avoid damaging your device.

Connector Pin # Pin Name Description

J1-01

CS SPI Chip Select. Connect to host ~SS

J1-02

DIN SPI Data In. Connect to host SDO

J1-03

DOUT/RDY SPI Data Out. Connect to host SDI

J1-04

SCLK SPI Clock. Connect to host SCK

J1-05

GND Ground

J1

-

06

DVDD Digital Vdd

J2-01

AIN1 Analog Input 1

J2-02

AIN2 Analog Input 1

J2-03

AIN3 Analog Input 1

J2-04

AIN4 Analog Input 1

J2-05

AIN5 Analog Input 1

J2-06

AIN6 Analog Input 1

J2-07

AIN7 Analog Input 1

J2

-

08

AIN8 Analog Input 1

J2-09

AINCOM

Analog Input Common, used for

pseudo differential signaling with AIN8:1

J2-10

REFIN2+/P1 Positive Reference Input/GPO1.

J2-11

REFIN2-/P0 Negative Reference Input/GP0.

J2-12

BPDSW Bridge Power Down Switch.

J3-01

SYNC Synchronization control

J3-02

P2 GPO2

J3-03

P3 GPO3

J4

-

01

AVDD Analog Vdd

J4-02

GND Ground

J5

AIN1 SMA input 1

J6

AIN2 SMA input 2

Table 1. Connector Pinout Tables

1 2

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