AD7879-1ACPZ-500R7 Analog Devices Inc, AD7879-1ACPZ-500R7 Datasheet - Page 11

• Manufacturer Part Number: AD7879-1ACPZ-500R7
• Description: Touch Screen Controller
• Manufacturer: Analog Devices Inc
• Type: Resistiver

Specifications of AD7879-1ACPZ-500R7

• Touch Panel Interface: 4-Wire
• Number Of Inputs/keys: 1 TSC
• Resolution (bits): 12 b
• Data Interface: I²C, Serial
• Data Rate/sampling Rate (sps, Bps): 105k
• Voltage Reference: External
• Voltage - Supply: 1.6 V ~ 3.6 V
• Current - Supply: 10nA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-LFCSP-VQ
• Voltage Supply Source: Single Supply
• Sampling Rate (per Second): 105k
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AD7879-1ACPZ-500R7TR

Figure 20. Typical FFT Plot for the Auxiliary Channels at 25 kHz Sampling
1400
1200
1000
–100
–120
–140
–160
800
600
400
200
–20
–40
–60
–80
0
0
2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
Figure 19. Temperature Code vs. V
Rate and 1 kHz Input Frequency
SNR = 61.58dB
THD = 72.34dB
FREQUENCY (Hz)
V
CC
(V)
CC
for 25°C
Rev. C | Page 11 of 40
Figure 21. Typical Uncalibrated Accuracy for the Battery Channel (25°C)
250
200
150
100
50
0
–4
–3
ERROR (%)
–2
AD7879/AD7889
–1
MEAN: –1.98893
SD: 0.475534
0