ADS7843EIn StockTexas Instruments
ADS7843E is a 12-bit successive approximation ADC with touch screen controller interface and synchronous serial output. Features 4-channel analog input, 6µs conversion time, and 5V supply support. From $0.80, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- ADS7843E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8035(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12-bit successive approximation ADC with ±0.05% max linearity error for precise touch position detection
- 4-channel analog input multiplexer supporting single-ended and differential measurement modes
- Synchronous serial interface (SPI-compatible) enabling easy connection to microcontrollers
- Ultra-fast 6µs maximum conversion time for responsive touch screen performance
- 5V analog input voltage range with low-power operation, ideal for portable and battery-powered designs
Applications
The ADS7843E is widely used in resistive touch screen controllers for industrial HMI panels, handheld PDAs, and embedded displays. Its precise 12-bit resolution and fast serial interface make it suitable for medical devices, GPS navigation systems, and portable consumer electronics. It also finds application in data acquisition systems and instrumentation requiring multi-channel analog measurement with compact SMD packaging.
Specifications
| Pbfree Code | Yes |
| YTEOL | 1 |
| Analog Input Voltage-Max | 5V |
| Conversion Time-Max | 6 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Linearity Error-Max (EL) | 0.0488% |
| Number of Analog In Channels | 4 |
| Number of Bits | 12 |
| Number of Functions | 1 |
| Output Bit Code | BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Sample Rate | 0.125MHz |
| Sample and Hold / Track and Hold | SAMPLE |
| Supply Current-Max | 0.65mA |
| Supply Voltage-Nom | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## ADS7843E Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.30 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADS7843E:
suggested
Frequently Asked Questions
What is the resolution and conversion speed of the ADS7843E?
The ADS7843E features 12-bit resolution with a maximum conversion time of 6µs. It uses a successive approximation architecture with a maximum linearity error of 0.0488%, making it highly accurate for touch screen coordinate detection and general-purpose data acquisition.
How many analog input channels does the ADS7843E support?
The ADS7843E provides 4 analog input channels that can be configured for single-ended or differential measurements. This makes it ideal for resistive touch screens, which require X and Y axis coordinate measurements along with optional pressure sensing using the touch panel's resistance.
What interface does the ADS7843E use to communicate with a microcontroller?
The ADS7843E uses a synchronous serial interface compatible with SPI protocol, allowing direct connection to most microcontrollers and DSPs. Data is clocked out serially after conversion, simplifying PCB layout and reducing the number of required I/O pins on the host processor.
What package is the ADS7843E available in and what is its supply voltage?
The ADS7843E is available in a 16-pin Small Outline Package (SOIC/SSOP). It operates with a 5V analog input voltage maximum and is RoHS-compliant (Pb-free). Starting from approximately $0.80 per unit, it is widely available with worldwide shipping support.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.0800 | $3.08 |
| 3+ | $3.0000 | $9.00 |
| 9+ | $2.2500 | $20.25 |
| 150+ | $1.9800 | $297.00 |
| 240+ | $0.8349 | $200.38 |
| 315+ | $0.8035 | $253.10 |
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