AD7835APZ

AD7835APZ contains four 14bit DACs on one monolithic chip. It is a serial input device. Data is loaded in 16bit format from the external serial bus, MSB first after two leading 0s into one via DIN, SCLK, and FSYNC. It can accept either 14bit parallel loading or double-byte loading, where right-justified data is loaded in one 8bit byte and one 6bit byte. Data is loaded from the external bus into one of the input latches under the control of the active-low WR, active-low CS, active-low BYSHF, and DAC channel address pins, A0 to A2. With each device, the active-low LDAC signal is used to update all four DAC outputs simultaneously, or individually, on reception of new data. In addition, for each device, the asynchronous active-low CLR input can be used to set all signal outputs, VOUT1 to VOUT4, to the user-defined voltage level on the device sense ground pin, DSG. Applications include process control, automatic test equipment, and general-purpose instrumentation.

• Voltage outputs, power-on reset function
• Common voltage reference inputs, user-assigned device addressing
• Clear function to user-defined voltage, resolution is 14bits
• Relative accuracy is ±2LSB maximum at (VCC = 5V ±5%; VDD = 15V ±5%)
• Differential nonlinearity is ±0.9LSB maximum at (VCC = 5V ±5%; VDD = 15V ±5%)
• Gain error is ±0.5mV typical at (VCC = 5V ±5%; VDD = 15V ±5%; VSS = -15V ±5%)
• Output noise spectral density is 40nV/√Hz typical
• Digital-to-analogue glitch impulse is 120nV-s typical
• Output voltage settling time is 10μs typical
• Operating temperature range from -40°C to +85°C, 44-lead PLCC package

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