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

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)
Per unit
Per Tube*
98 - 98
196 - 392
490 +
*price indicative
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