DAC7716SRHAR.A中文资料德州仪器数据手册PDF规格书

1FEATURES

2345· Bipolar Output: Up to ±16V

· Unipolar Output: 0V to +20V

· 12-Bit Monotonic

· Relative Accuracy: 1 LSB Max

· Low Zero and Gain Errors

– Before User Calibration: 0.5 LSB

– After User Calibration:

0.0078 LSB Zero Error, 0.0625 LSB Gain

Error

· Low Noise: 60nV/√Hz

· Settling Time: 6ms

· Configurable Gain: x2/x4

· Analog Output Monitor

· Power-Down Mode

· SPI™: Up to 50MHz, 1.8V/3V/5V Logic

· Daisy-Chain Mode

· Operating Temperature: –40°C to +105°C

· Packages: QFN-40 (6x6mm), TQFP-48 (7x7mm)

APPLICATIONS

· Automatic Test Equipment

· Instrumentation

· Industrial Process Control

· Communications

DESCRIPTION

The DAC7716 is a high-accuracy, quad-channel,

12-bit digital-to-analog converter (DAC) that operates

from supply voltages of ±5V to ±18V in bipolar output mode, and from ±5V to +24V/–12V in unipolar mode.

With a 5V reference, the DAC7716 can be configured

to output ±10V, ±5V, 0V to 20V, or 0V to 10V. The

DAC7716 provides 12-bit monotonicity, excellent

integral nonlinearity (INL) error of ±1 LSB, low glitch,

and low noise over the operating temperature range

of –40°C to +105°C. This device is trimmed in

production for very low zero and gain errors. In

addition, the DAC7716 implements a

user-programmable system-level calibration function to achieve ±0.0078 LSB zero error and ±0.0625 LSB

gain error.

The DAC7716 has integrated reference buffers and

output buffers. It features a standard high-speed

1.8V, 3V, or 5V serial peripheral interface (SPI) that

operates at clock rates of up to 50MHz to communicate with a DSP or microprocessor. The four

DAC channels and the auxiliary registers are

addressed with four address bits. The device features

double-buffered interface logic for simultaneous

updates of all DACs. An asynchronous load input

(LDAC) transfers data from the input data register to the DAC latch, and the contents of the DAC latch set

the output voltage. The asynchronous RST input sets

the output of all four DACs to 0V. The VMON pin is an

analog monitor output that multiplexes the individual

DAC outputs or the AIN pin.

The DAC7716 is pin-compatible with the DAC8734

(16-bit) and the DAC8234 (14-bit).