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Technical Specifications
Parameters and characteristics for this part
| Specification | AD7843ARUZ-REEL7 |
|---|---|
| Interface | Serial |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 16-TSSOP |
| Package / Case [x] | 0.173 in |
| Package / Case [y] | 4.4 mm |
| Resolution (Bits) | 12 b |
| Supplier Device Package | 16-TSSOP |
| Touchscreen | 4 Wire Resistive |
| Voltage - Supply [Max] | 5.25 V |
| Voltage - Supply [Min] | 2.2 V |
| Voltage Reference | External |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 5.33 | |
| 10 | $ 3.56 | |||
| 25 | $ 3.11 | |||
| 100 | $ 2.59 | |||
| 250 | $ 2.35 | |||
| 500 | $ 2.19 | |||
| Digi-Reel® | 1 | $ 5.33 | ||
| 10 | $ 3.56 | |||
| 25 | $ 3.11 | |||
| 100 | $ 2.59 | |||
| 250 | $ 2.35 | |||
| 500 | $ 2.19 | |||
| Tape & Reel (TR) | 1000 | $ 2.07 | ||
| 2000 | $ 1.96 | |||
| 3000 | $ 1.91 | |||
| 5000 | $ 1.88 | |||
Description
General part information
AD7843 Series
The AD7843 is a 12-bit successive-approximation ADC with a synchronous serial interface and low on resistance switches for driving touch screens. The part operates from a single 2.2 V to 5.25 V power supply and features throughput rates greater than 125 kSPS. The external reference applied to the AD7843 can be varied from 1 V to +VCC, while the analog input range is from 0 V to VREF. The device includes a shutdown mode that reduces the current consumption to less than 1 µA. This part is available in a 16-lead 0.15" Quarter Size Outline (QSOP) package and a 16-lead Thin Shrink Small Outline (TSSOP) package.Also see the AD7843 sister part, which is theAD7873. This part is similar to the AD7843 but has added functionality such as an on-chip temperature sensor (-40°C to + 85°C), on-chip 2.5 V reference and direct battery and touch-pressure measurement.
Documents
Technical documentation and resources
