- RS stock no.:
- 183-1838
- Mfr. Part No.:
- AD7843ARQZ
- Manufacturer:
- Analog Devices
Discontinued product
- RS stock no.:
- 183-1838
- Mfr. Part No.:
- AD7843ARQZ
- Manufacturer:
- Analog Devices
Technical data sheets
Legislation and Compliance
- COO (Country of Origin):
- PH
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
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
Specification
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 |
Sensor Type | Touch Screen Digitisers |
Length | 5mm |
Width | 4.01mm |
Height | 1.65mm |
Maximum Operating Temperature | +85 °C |
Minimum Operating Temperature | -40 °C |