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Updated at 17/06/2025 10:30:15(UTC+8)
Certifications
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Description
- Product Details
- The AD7873 is a 12-bit successive approximation ADC with a synchronous serial interface and low on resistance switches for driving touch screens. The AD7873 operates from a single 2.2 V to 5.25 V supply, with a throughput rate of 125 kSPS.
- The AD7873 features direct battery measurement, temperature measurement, and touch pressure measurement. The AD7873 also has an on-board reference of 2.5 V that can be used for the auxiliary input, battery monitor, and temperature measurement modes. When not in use, the internal reference can be shut down to conserve power. An external reference can also be applied and varied from 1 V to VCC with an analog input range from 0 V to VREF. The device includes a shutdown mode that reduces the current consumption to less than 1 µA.
- The AD7873 features on-board switches. This, coupled with low power and high speed operation, makes the device ideal for battery-powered systems with resistive touch screens. The part is available in a 16-lead, 0.15 inch quarter size outline package (QSOP), a 16-lead, thin shrink small outline package (TSSOP), and a 16-lead, lead frame chip scale package (LFCSP).
- Product Highlights
- 1. Ratiometric conversion mode available, eliminating errors due to on-board switch resistances.
- 2. On-board temperature sensor: −40°C to +85°C.
- 3. Battery monitor input.
- 4. Touch pressure measurement capability.
- 5. Low power consumption of 1.37 mW maximum with the reference off, or 2.41 mW typical with the reference on, at 125 kSPS and VCC at 3.6 V.
- 6. Package options include 4 mm × 4 mm LFCSP.
- 7. Analog input range from 0 V to VREF.
- 8. Versatile serial I/O ports.
- Applications
- Personal digital assistants
- Smart hand-held devices
- Touch screen monitors
- Point-of-sale terminals
- Pagers
- ### Features and Benefits
- 4-Wire touch screen interface
- On-chip temperature sensor:
- –40°C to +85°C
- On-chip 2.5 V reference
- Direct battery measurement (0 V to 6 V)
- Touch pressure measurement
- Specified throughput rate
- of 125 kSPS
- Single supply, VCC of 2.2 V to 5.25 V
- Ratiometric conversion
- High speed serial interface
- Programmable
- 8- or 12-bit resolution
- One auxiliary analog input
- Shutdown mode: 1 µA maximum
- 16-lead QSOP, TSSOP, and LFCSP packages
AD7873 Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Show | |
| Product Lifecycle Status | Active |
| RoHS | RoHS Compliant |
| Lead-Free Status | Lead Free |
Order guide
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TT in advance (bank transfer), Western Union, Credit card,
PayPal. Customer is responsible for shipping fee, bank
charges, duties and taxes.
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- You can choose whether shipping charges will be charged through your shipping account or by us.
- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
Contact Us
If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.
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