Key facts
- Brand
- Analog Devices
- Model
- AD7877
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-06-08
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Analog Devices AD7877 Touch Screen Controller Datasheet
The AD7877 is a 12-bit successive approximation analog-to-digital converter (ADC) featuring a synchronous serial interface specifically optimized for driving resistive touch screens. It operates from a single power supply ranging from 2.7 V to 5.25 V and supports throughput rates of up to 125 kSPS.
Key features include an on-chip temperature sensor, direct battery measurement channels, an internal 2.5 V reference voltage, and an on-board 8-bit DAC for LCD backlight or contrast control. The device also incorporates noise reduction capabilities via the STOPACQ pin and supports touch-pressure measurement.
Analog Devices AD7877 specifications
| Resolution | 12 Bits |
|---|---|
| Throughput Rate | 125 kSPS |
| Operating Temperature Range | -40°C to +85°C |
| Supply Voltage (Vcc) | 2.7 V to 5.25 V |
| Internal Reference Voltage | 2.5 V |
| Package Type | 32-lead LFCSP |
Source: Analog Devices AD7877 Touch Screen Controller Datasheet
All Analog Devices AD7877 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the resolution of the AD7877?
The device features a 12-bit resolution.
From: Analog Devices AD7877 Touch Screen Controller Datasheet
Does the AD7877 include an internal reference voltage?
Yes, it includes an on-chip 2.5 V reference.
From: Analog Devices AD7877 Touch Screen Controller Datasheet
What is the maximum throughput rate of the AD7877?
The AD7877 can achieve a throughput rate of 125 kSPS.
From: Analog Devices AD7877 Touch Screen Controller Datasheet
What supply voltage range does the AD7877 operate from?
It operates from a single supply of 2.7 V to 5.25 V (functional operation down to 2.2 V).
From: Analog Devices AD7877 Touch Screen Controller Datasheet
What is the maximum throughput rate of the AD7877?
The device can achieve a throughput rate of 125 kSPS.
What supply voltage range does the AD7877 operate from?
It operates from a single supply voltage of 2.7 V to 3.6 V.