Specification	ADS7846E

Current - Supply	500 µA
Interface	SPI
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	0.154 in
Package / Case	16-SSOP
Package / Case	3.9 mm
Resolution (Bits)	12 b
Supplier Device Package	16-SSOP
Touchscreen	4 Wire Resistive
Voltage - Supply [Max]	5.25 V
Voltage - Supply [Min]	2.2 V
Voltage Reference	Internal, External

ADS7846 Series

4-wire Touch Screen Controller

Part	Resolution (Bits)	Supplier Device Package	Current - Supply	Package / Case [x]	Package / Case	Package / Case [y]	Interface	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Touchscreen	Voltage Reference	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case	Package / Case
Texas Instruments ADS7846NG4	12 b	16-TSSOP	500 µA	0.173 in	16-TSSOP	4.4 mm	SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V
Texas Instruments ADS7846N/2K5G4	12 b	16-TSSOP	500 µA	0.173 in	16-TSSOP	4.4 mm	SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V
Texas Instruments ADS7846E/2K5G4	12 b	16-SSOP	500 µA		16-SSOP		SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V	0.154 in	3.9 mm
Texas Instruments ADS7846IRGVT	12 b	16-VQFN (4x4)	500 µA		16-VQFN Exposed Pad		SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V
Texas Instruments ADS7846E	12 b	16-SSOP	500 µA		16-SSOP		SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V	0.154 in	3.9 mm
Texas Instruments ADS7846N	12 b	16-TSSOP	500 µA	0.173 in	16-TSSOP	4.4 mm	SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V
Texas Instruments ADS7846N/2K5	12 b	16-TSSOP	500 µA	0.173 in	16-TSSOP	4.4 mm	SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V
Texas Instruments ADS7846IRGVR	12 b	16-VQFN (4x4)	500 µA		16-VQFN Exposed Pad		SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V
Texas Instruments ADS7846E/2K5	12 b	16-SSOP	500 µA		16-SSOP		SPI	85 °C	-40 °C	Surface Mount	4 Wire Resistive	External Internal	5.25 V	2.2 V	0.154 in	3.9 mm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 5.64
		10	$ 5.07
		75	$ 4.79
		150	$ 4.15
		300	$ 3.94
		525	$ 3.53
		1050	$ 2.98
		2550	$ 2.83
Texas Instruments	TUBE	1	$ 4.90
		100	$ 4.29
		250	$ 3.01
		1000	$ 2.42

Description

General part information

ADS7846 Series

The ADS7846 is a next-generation version to the industry standard ADS7843 4-wire touch screen controller. The ADS7846 is 100% pin-compatible with the existing ADS7843, and drops into the same socket. This allows for easy upgrade of current applications to the new version. Only software changes are required to take advantage of the added features of direct battery measurement, temperature measurement, and touch-pressure measurement. The ADS7846 also has an on-chip 2.5V reference that can be used for the auxiliary input, battery monitor, and temperature measurement modes. The reference can also be powered down when not used to conserve power. The internal reference operates down to 2.7V supply voltage while monitoring the battery voltage from 0V to 6V.

The low-power consumption of < 0.75mW typ at 2.7V (reference off), high speed (up to 125kHz clock rate), and on-chip drivers make the ADS7846 an ideal choice for battery-operated systems such as personal digital assistants (PDAs) with resistive touch screens, pagers, cellular phones, and other portable equipment. The ADS7846 is available in the small TSSOP-16, SSOP-16, QFN-16, and VFBGA-48 packages and is specified over the –40°C to +85°C temperature range.

Documents

Technical documentation and resources

Touch-Screen Controller datasheet (Rev. H)

Data sheet