EVAL-AD7877EBZ Analog Devices Inc, EVAL-AD7877EBZ Datasheet - Page 3

• 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

SPECIFICATIONS
V
Table 1.
Parameter
DC ACCURACY
SWITCH DRIVERS
ANALOG INPUTS
REFERENCE INPUT/OUTPUT
TEMPERATURE MEASUREMENT
BATTERY MONITOR
DAC
CC
Resolution
No Missing Codes
Integral Nonlinearity
Differential Nonlinearity (DNL)
Offset Error
Gain Error
Noise
Power Supply Rejection
Internal Clock Frequency
On Resistance
Input Voltage Ranges
DC Leakage Current
Input Capacitance
Accuracy
Internal Reference Voltage
Internal Reference Tempco
V
DC Leakage Current
V
Temperature Range
Resolution
Accuracy
Input Voltage Range
Input Impedance
Accuracy
Resolution
Integral Nonlinearity
Differential Nonlinearity
Voltage Mode
REF
REF
= 2.7 V to 3.6 V, V
Differential Method
Single Conversion Method
Differential Method
Single Conversion Method
Output Voltage Range
Slew Rate
Output Settling Time
Negative DNL
Positive DNL
Y+, X+
Y−, X−
Input Voltage Range
Input Impedance
1
1
1
REF
1
2
2
= 2.5 V internal or external, f
3
3
1
Min
12
11
0
2.44
1
−40
0.5
Typ
12
±2
70
70
2
14
14
±0.1
30
0.3
±50
1
1.6
0.3
±4
±2
14
1
8
±1
±1
0 − V
0 − V
−0.4, +0.5
12
DCLK
CC
CC
/2
= 2 MHz, T
Rev. B | Page 3 of 44
−0.99
3.2
15
Max
±2
+2
±6
±4
V
2.55
V
±1
+85
5
REF
CC
A
= −40°C to +85°C, unless otherwise noted.
Unit
Bits
Bits
LSB
LSB
LSB
LSB
LSB
μV rms
dB
MHz
Ω
Ω
V
μA
pF
%
V
ppm/°C
V
μA
GΩ
°C
°C
°C
°C
°C
V
kΩ
%
Bits
Bits
V
V
V/μs
μs
Test Conditions/Comments
LSB size = 610 μV
Minimum LSB size = 610 μV
V
External reference
All channels, internal V
CS = GND or V
reference is enabled
0°C to 70°C
Calibrated at 25°C
@ V
Sampling, 1 GΩ when the battery monitor is off
External/internal reference, see Figure 26
Guaranteed monotonic by design
DAC register Bit 2 = 0, Bit 0 = 0
DAC register Bit 2 = 0, Bit 0 = 1
0 to 3/4 scale, R
CC
= 2.7 V
REF
= 2.5 V
CC
LOAD
; typically 25 Ω when the on-board
= 10 kΩ, C
REF
LOAD
= 50 pF
AD7877