DAC7760IPWPR datasheet(4/63 Pages) TI1

4 / 63 page

DAC7760, DAC8760

SBAS528B – JUNE 2013 – REVISED JUNE 2016

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Pin Functions

I/O

DESCRIPTION

NAME

VQFN

HTSSOP

ALARM

Digital output

Alarm pin. Open drain output. External pullup resistor required (10 kΩ). The pin

goes low (active) when the ALARM condition is detected (open circuit, over

temperature, timeout and so forth).

AVDD

Supply input

Positive analog power supply.

AVSS

14, 37

Supply input

Negative analog power supply in dual power-supply operation. Connects to GND

in single power-supply operation.

BOOST

Analog output

Boost pin. External transistor connection (optional).

CAP1

—

Analog input

Connection for current output filtering capacitor (optional).

CAP2

—

Analog input

Connection for current output filtering capacitor (optional).

CLR

Digital input

Clear input. Logic high on this pin causes the part to enter CLEAR state. Active

high.

CLR-SEL

Digital input

Selects the VOUT value in CLEAR state, after power-on and reset.

CMP

Analog output

External compensation capacitor connection pin (optional). Addition of the

external capacitor (connected between VOUT and this pin) improves the stability

with high capacitive loads at the VOUT pin by reducing the bandwidth of the

output amplifier, thus increasing the settling time.

DIN

Digital input

Serial data input. Data are clocked into the 24-bit input shift register on the rising

edge of the serial clock input. Schmitt-Trigger logic input.

DVDD

Supply input or

output

Digital power supply. Can be input or output, depending on DVDD-EN pin.

DVDD-EN

Digital input

Internal power-supply enable pin. Connect this pin to GND to disable the internal

supply, or leave this pin unconnected to enable the internal supply. When this

pin is connected to GND, an external supply must be connected to the DVDD

pin.

GND

Supply input

Ground reference point for all digital circuitry of the device. Connect to 0 V.

GND

12, 13, 15

11, 12

Supply input

Ground reference point for all analog circuitry of the device. Connect to 0 V.

HART-IN

Analog input

Input pin for HART modulation.

IOUT

Analog output

Current output pin

ISET-R

Analog input

Connection pin for external precision resistor (15 kΩ). See the Detailed

Description section of this data sheet.

LATCH

Digital input

Load DAC registers input. A rising edge on this pin loads the input shift register

data into the DAC data and control registers and updates the DAC outputs.

1, 10, 11,

19, 20, 21,

22, 30, 31,

35, 38, 40

—

No connection.

REFOUT

Analog output

Internal reference output. Connect to REFIN when using internal reference.

REFIN

Analog input

Reference input

SCLK

Digital input

Serial clock input of serial peripheral interface (SPI™). Data can be transferred

at rates up to 30 MHz. Schmitt-Trigger logic input.

SDO

Digital output

Serial data output. Data are valid on the rising edge of SCLK.

THERMAL

PAD

—

Supply input

The thermal pad is internally connected to the AVSS supply. It is recommended

that the pad be thermally connected to a copper plane for enhanced thermal

performance. The pad can be electrically connected to the same potential as the

AVSS pin (either negative supply voltage or GND) or left electrically

unconnected provided a supply connection is made at the AVSS pin. The AVSS

pin must always be connected to either the negative supply voltage or GND,

independent of the thermal pad connection.

VOUT

Analog output

Voltage output pin. This is a buffered analog voltage output.

+VSENSE

Analog input

Sense pin for the positive voltage output load connection.

–VSENSE

Analog input

Sense pin for the negative voltage output load connection.

DAC7760IPWPR Datasheet(PDF) 4 Page - Texas Instruments

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