AD7843ARQZ, Touch Screen Digitizer, 12 bit- 125ksps Single, 16-Pin QSOP

Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

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.

4-wire touch screen interface
Specified throughput rate of 125 kSPS
Low power consumption:
1.37 mW max at 125 kSPS with VCC = 3.6 V
Single supply, VCC of 2.2 V to 5.25 V
Ratiometric conversion
High speed serial interface
Programmable 8-bit or 12-bit resolution
2 auxiliary analog inputs
Shutdown mode: 1 μA max
16-lead QSOP and TSSOP packages

Specifications
Attribute Value
Conversion Rate 125ksps
Resolution 12 bit
Mounting Type Surface Mount
Package Type QSOP
Pin Count 16
Typical Operating Supply Voltage Single
Dimensions 5 x 4.01 x 1.65mm
Length 5mm
Width 4.01mm
Height 1.65mm
Maximum Operating Temperature +85 °C
Minimum Operating Temperature -40 °C
196 In stock - FREE next working day delivery available
Price Each (In a Tube of 98)
£ 1.656
(exc. VAT)
£ 1.987
(inc. VAT)
Units
Per unit
Per Tube*
98 - 98
£1.656
£162.288
196 - 392
£1.578
£154.644
490 +
£1.434
£140.532
*price indicative
Related Products
Wiper Position Stored in Nonvolatile Memory and Recalled ...
Description:
Wiper Position Stored in Nonvolatile Memory and Recalled Upon Power-Up Tiny SOT23 Package35ppm/°C End-to-End Resistance Temperature Coefficient5ppm/°C Ratiometric Temperature Coefficient32 Tap Positions Voltage-Divider or Variable-Resistor Potentiometer Configuration50kΩ and 100kΩ End-to-End Resistance Values1μA (max) Static Supply Current2.7V to 5.25V Single-Supply Operation200,000 Wiper Store Cycles50-Year Wiper Data Retention Applications Audio Volume Control ...
Operate from Single +5V Supply Buffered Voltage Output ...
Description:
Operate from Single +5V Supply Buffered Voltage Output Internal 2.048V Reference (MAX504)140μA Supply Current (MAX515)INL = ±1/2LSB (max)Guaranteed Monotonic Over Temperature Flexible Output Ranges:0V to VDD (MAX504/MAX515)VSS to VDD (MAX504) 8-Pin SO/DIP (MAX515Power-On Reset Serial Data Output for Daisy-Chaining Applications Audio Systems Battery-Operated/Remote Industrial Controls Battery-Powered Test Instruments Digital Gain ...
16-/12-Bit Resolution Available in a 4mm x 4mm, ...
Description:
16-/12-Bit Resolution Available in a 4mm x 4mm, 24-Pin TQFN Package or 16-Pin TSSOPHardware-Selectable to Zero/Midscale DAC Output on Power-Up or Reset Double-Buffered Input Registers Active-Low LDAC Asynchronously Updates DAC Outputs Simultaneously Active-Low READY Facilitates Daisy Chaining High-Performance 10ppm/°C Internal Reference Guaranteed Monotonic Over All Operating Conditions Wide +2.7V to ...
+2.7V to +3.3V Single-Supply Operation Wide Spurious-Free Dynamic ...
Description:
+2.7V to +3.3V Single-Supply Operation Wide Spurious-Free Dynamic Range: 70dB at f OUT = 2.2MHz Fully Differential Output Low-Current Standby or Full Shutdown Modes Internal +1.2V Low-Noise Bandgap Reference Small 24-Pin QSOP Package Applications Arbitrary Waveform Generation (AWG)Digital Signal Processing (DSP)Imaging Signal Reconstruction.