ADS7843-Q1 Series

Automotive 4-wire Touch Screen Controller

Catalog

Automotive 4-wire Touch Screen Controller

Part	Supplier Device Package	Mounting Type	Interface	Operating Temperature [Max]	Operating Temperature [Min]	Resolution (Bits)	Current - Supply	Package / Case	Package / Case	Package / Case	Voltage - Supply [Max]	Voltage - Supply [Min]	Touchscreen	Voltage Reference	Grade	Qualification
Texas Instruments ADS7843E/2K5	16-SSOP	Surface Mount	Serial	85 °C	-40 °C	12 b	2.5 µA	0.154 in	16-SSOP	3.9 mm	5 V	2.7 V	4 Wire Resistive	External
Texas Instruments ADS7843E	16-SSOP	Surface Mount	Serial	85 °C	-40 °C	12 b	2.5 µA	0.154 in	16-SSOP	3.9 mm	5 V	2.7 V	4 Wire Resistive	External
Texas Instruments ADS7843IDBQRQ1	16-SSOP	Surface Mount	Serial	85 °C	-40 °C	12 b	280 µA	0.154 in	16-SSOP	3.9 mm	5 V	2.7 V	4 Wire Resistive	External	Automotive	AEC-Q100

Catalog

Automotive 4-wire Touch Screen Controller

Key Features

• Qualified for Automotive ApplicationsRatiometric ConversionSingle Supply: 2.7V to 5VUp to 125kHz Conversion RateSerial InterfaceProgrammable 8- or 12-Bit Resolution2 Auxiliary Analog InputsFull Power-Down ControlQualified for Automotive ApplicationsRatiometric ConversionSingle Supply: 2.7V to 5VUp to 125kHz Conversion RateSerial InterfaceProgrammable 8- or 12-Bit Resolution2 Auxiliary Analog InputsFull Power-Down Control

Description

The ADS7843-Q1 is a 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface and low on-resistance switches for driving touch screens. Typical power dissipation is 750µW at a 125kHz throughput rate and a +2.7V supply. The reference voltage (VREF) can be varied between 1V and +VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces typical power dissipation to under 0.5µW. The ADS7843-Q1 is specified down to 2.7V operation. Low power, high speed, and onboard switches make the ADS7843-Q1 ideal for battery-operated systems such as personal digital assistants with resistive touch screens and other portable equipment. The ADS7843-Q1 is available in an SSOP-16 package and is specified over the –40°C to +85°C temperature range. The ADS7843-Q1 is a 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface and low on-resistance switches for driving touch screens. Typical power dissipation is 750µW at a 125kHz throughput rate and a +2.7V supply. The reference voltage (VREF) can be varied between 1V and +VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces typical power dissipation to under 0.5µW. The ADS7843-Q1 is specified down to 2.7V operation. Low power, high speed, and onboard switches make the ADS7843-Q1 ideal for battery-operated systems such as personal digital assistants with resistive touch screens and other portable equipment. The ADS7843-Q1 is available in an SSOP-16 package and is specified over the –40°C to +85°C temperature range.