EVAL-AD7877EBZ Analog Devices Inc, EVAL-AD7877EBZ Datasheet - Page 8

• Manufacturer Part Number: EVAL-AD7877EBZ
• Description: BOARD EVALUATION FOR AD7877
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7877EBZ

• Main Purpose: Interface, Touch Screen Controller
• Embedded: No
• Utilized Ic / Part: AD7877
• Primary Attributes: 4-Wire Resistive Touch Screen Controller, SPI Interface, On-Chip: Temp Sensor, Voltage Reference, 8-Bit DAC
• Secondary Attributes: USB GUI, LCD Noise Reduction Feature, 2.7 ~ 5.25 V, Wake Up on Touch Feature
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7877
Pin No.
28
29
30
31
V
ARNG
AOUT
V
Mnemonic
DRIVE
REF
Description
Logic Power Supply Input. The voltage supplied at this pin determines the operating voltage for the serial
interface of the AD7877.
When the DAC is in current output mode, a resistor from ARNG to GND sets the output range.
Analog Output Voltage or Current from DAC.
Reference Output for the AD7877. The internal 2.5 V reference is available on this pin for use external to the
device. The reference output must be buffered before it is applied elsewhere in a system. To reduce system
noise effects, it is strongly recommended to place a capacitor of 100 nF between the V
Alternatively, an external reference can be applied to this input. The voltage range for the external reference is
1.0 V to V
CC
. For the specified performance, it is 2.5 V on the AD7877.
Rev. C | Page 8 of 44
REF
pin and GND.