AD7879 Analog Devices, AD7879 Datasheet - Page 3

• Manufacturer Part Number: AD7879
• Description: Low Voltage Controller for Touch Screens
• Manufacturer: Analog Devices

Specifications of AD7879

• Resolution (bits): 12bit
• # Chan: 6
• Sample Rate: 105kSPS
• Interface: I²C/Ser 2-Wire,Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni Vdd
• Adc Architecture: SAR
• Pkg Type: CSP,WLCSP

SPECIFICATIONS
V
Table 1.
Parameter
DC ACCURACY
SWITCH DRIVERS
ANALOG INPUTS
TEMPERATURE MEASUREMENT
BATTERY MONITOR
LOGIC INPUTS (DIN, SCL, CS, SDA, GPIO)
LOGIC OUTPUTS (DOUT, GPIO, SCL, SDA, INT)
CONVERSION RATE
CC
Resolution
No Missing Codes
Integral Nonlinearity (INL)
Differential Nonlinearity (DNL)
Offset Error
Gain Error
Noise
Power Supply Rejection
Internal Clock Frequency
Internal Clock Accuracy
On Resistance
Input Voltage Range
DC Leakage Current
Input Capacitance
Accuracy
Temperature Range
Resolution
Accuracy
Input Voltage Range
Input Impedance
Accuracy
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Capacitance, C
Output High Voltage, V
Output Low Voltage, V
Floating-State Leakage Current
Floating-State Output Capacitance
Conversion Time
Throughput Rate
= 1.6 V to 3.6 V, T
Negative DNL
Positive DNL
Y+, X+
Y−, X−
3
2
1, 2
1, 2
1
IN
3
3
A
INL
IN
INH
= −40°C to +85°C, unless otherwise noted.
3
OL
OH
3
1
1
2
Min
12
11
1.8
0
−40
0.5
0.7 × V
V
CC
− 0.2
CC
Typ
12
±2
70
60
2
6
5
±0.1
30
0.3
0.3
±2
16
2
0.01
10
±0.1
5
9.5
105
Rev. C | Page 3 of 40
Max
±3
−0.99
2
±6
±4
2.2
V
+85
5
5
0.3 × V
0.4
CC
CC
Unit
Bits
Bits
LSB
LSB
LSB
LSB
LSB
µV rms
dB
MHz
MHz
Ω
Ω
V
µA
pF
%
°C
°C
°C
V
kΩ
%
V
V
µA
pF
V
V
µA
pF
µs
kSPS
Test Conditions/Comments
LSB size = 390 µV.
LSB size = 390 µV.
Calibrated at 25°C.
Uncalibrated accuracy.
V
Including 2 µs of acquisition time, MAV
filter off. 2 µs of additional time is required
if MAV filter is on.
IN
= 0 V or V
CC
.
AD7879/AD7889