Features: ·±0.2 LSB (±0.00031%) Typ Peak DNL and INL
·±0.5 LSB (±0.00076%) Typ Unipolar Offset, Bipolar Zero
·17-Bit Monotonicity Guaranteed
·18-Bit Resolution (in Serial Mode)
·Complete 16/18-Bit D/A Function
On-Chip Output Amplifier
On-Chip Buried Zener Voltage Reference
·Microprocessor Compatible
Serial or Byte Input
Double Buffered Latches
·Asynchronous Clear Function
·Serial Output Pin Facilitates Daisy Chaining
·Pin Strappable Unipolar or Bipolar Output
·Low THD+N: 0.005%
·MUX Output Control on Power-Up and Supply Glitches
Pinout
Specifications
| Resolution (Bits) |
18bit |
| DAC Update Rate |
167kSPS |
| DAC Settling Time |
6s |
| # DAC Outputs |
1 |
| DAC Type |
Voltage Out |
| DAC Input Format |
Byte,Ser |
| Output FSR |
(Bip 10V),(Bip Vref),(Uni 10V),(Uni Vref) |
| Ref Int/Ext |
Int/Ext |
| Supply Vnom |
Multi(±15, +5Dig) |
| Pwr Diss |
725mW |
| Package |
DIP |
VCC to AGND . . . . . . . . . . . . . . . . . . . . . 0.3 V to +17.0 V
VEE to AGND . . . . . . . . . . . . . . . . . . . . . +0.3 V to 17.0 V
VLL to DGND . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1 V
Digital Inputs (Pins 2, 714, and 1621)
to DGND . . . . . . . . . . . . . . . . . . . . .. . 1.0 V to +7.0 V
REF IN to AGND . . . . . . . . . . . . . . . . . . . .. . . . . ±10.5 V
Span/Bipolar Offset to AGND . . . . . . . . . . . . . . . . ±10.5 V
REF OUT, VOUT, MUXOUT, MUXIN . . . . . Indefinite Short to
AGND, DGND, VCC, VEE, and VLL
JA, Thermal Impedance . . . . . . . . . . . . . . .. . . . . 50°C/W
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 175°C
Storage Temperature . . . . . . . . . . . . 65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . +300°C
DescriptionThe AD760 is a complete 16/18-bit self-calibrating monolithic DAC (DACPORT®) with onboard voltage reference, double buffered latches and output amplifier. It is manufactured on Analog Devices' BiMOS II process. This process allows the fabricationof low power CMOS logic functions on the same chip as high precision bipolar linear circuitry.
Self-calibration AD760 is initiated by simply pulsing theCAL pin low. The CALOK pin indicates when calibration has been successfully completed. The output multiplexer (MUXOUT) can be used to send the output to the bottom of the output range during calibration.
Data can be loaded into the AD760 as straight binary, serial data or as two 8-bit bytes. In serial mode, 16-bit or 18-bit data can be used and the serial mode input format is pin selectable, to be MSB or LSB first. This is made possible by three digital input pins which have dual functions (Pins 12, 13, and 14). In byte mode the user can similarly define whether the high byte or low byte is loaded first. The serial output (SOUT) pin allows the user to daisy chain several AD760s by shifting the data through the input latch into the next DAC thus minimizing the number of control lines required in a multiple DAC application. The double buffered latch structure eliminates data skew errors and provides for simultaneous updating of DACs in a multi-DAC system.
The asynchronousCLR function of AD760 can be configured to clear the output to minus full-scale or midscale depending on the state of Pin 17 whenCLR is strobed. The AD760 also powers up with the MUX output in a predetermined state by means of a digital and analog power supply detection circuit. This is particularly useful for robotic and industrial control applications.
The AD760 is available in a 28-pin, 600 mil cerdip package. The AQ version is specified from 40°C to +85°C.
AD760 Data Sheet
