EVAL-AD7843CB3 AD [Analog Devices], EVAL-AD7843CB3 Datasheet - Page 2

• Manufacturer Part Number: EVAL-AD7843CB3
• Description: Touch Screen Digitizer
• Manufacturer: AD [Analog Devices]

Parameter
DC ACCURACY
SWITCH DRIVERS
ANALOG INPUT
REFERENCE INPUT
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
NOTES
1
2
3
4
5
Specifications subject to change without notice.
AD7843–SPECIFICATIONS
Temperature range as follows: A Version: –40°C to +85°C.
See Terminology.
Guaranteed by design.
Sample tested @ 25°C to ensure compliance.
See Power vs. Throughput Rate section.
Resolution
No Missing Codes
Integral Nonlinearity
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Power Supply Rejection
On-Resistance
Input Voltage Ranges
DC Leakage Current
Input Capacitance
V
DC Leakage Current
V
V
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Capacitance, C
Output High Voltage, V
Output Low Voltage, V
PENIRQ Output Low Voltage, V
Floating-State Leakage Current
Floating-State Output Capacitance
Output Coding
Conversion Time
Track/Hold Acquisition Time
Throughput Rate
V
I
Power Dissipation
CC
REF
REF
REF
CC
Y+, X+
Y–, X–
Normal Mode (f
Normal Mode (f
Normal Mode (Static)
Shutdown Mode (Static)
Normal Mode (f
Shutdown
5
(Specified Performance)
Input Impedance
Input Current
Input Voltage Range
2
2
2
IN
3
5
SAMPLE
SAMPLE
SAMPLE
3
3
2
IN
INL
INH
4
OL
OH
= 125 kSPS)
= 12.5 kSPS)
= 125 kSPS)
OL
4
AD7843A
12
11
± 2
± 6
1
0.1
± 4
1
0.1
70
5
6
0 to V
± 0.1
37
1.0/+V
5
20
1
1
2.4
0.4
± 1
10
V
0.4
0.4
± 10
10
Straight (Natural) Binary
12
3
125
2.7/3.6
380
170
150
1
1.368
3.6
± 1
CC
– 0.2
(V
–40 C to +85 C, unless otherwise noted.)
REF
CC
CC
= 2.7 V to 3.6 V, V
1
V min/max
Unit
Bits
Bits min
LSB max
LSB max
LSB max
LSB typ
LSB max
LSB max
LSB typ
dB typ
Ω typ
Ω typ
Volts
µA typ
pF typ
V min/max
µA max
GΩ typ
µA max
µA typ
µA max
V min
V max
µA max
pF max
V min
V max
V max
µA max
pF max
DCLK Cycles max
DCLK Cycles min
kSPS max
µA max
µA typ
µA typ
µA max
mW max
µW max
REF
= 2.5 V, f
SCLK
= 2 MHz unless otherwise noted; T
Test Conditions/Comments
V
CS = GND or +V
8 µA typ
f
CS = +V
Typically 10 nA, V
I
I
I
Functional from 2.2 V to 5.25 V
Digital I/Ps = 0 V or V
V
V
V
V
V
SAMPLE
SOURCE
SINK
SINK
CC
CC
CC
CC
CC
CC
= 2.7 V
= 2.7 V, f
= 3.6 V
= 3.6 V
= 3.6 V
= 3.6 V, 240 µA typ
= 250 µA
= 250 µA; 100 kΩ Pull-Up
= 12.5 kHz
= 250 µA; V
CC
; 0.001 µA typ
DCLK
CC
IN
= 2 00 kHz
CC
= 0 V or +V
CC
= 2.2 V to 5.25 V
A
=
CC