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AD557: DACPORT Low Cost, Complete µP-Compatible 8-Bit DAC Data Sheet (Rev. B)10/14/1987PDF107 kB
AD557
DACPORT Low Cost, Complete µP-Compatible 8-Bit DAC
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Overview
Features and Benefits
- Complete 8-bit DC
- Voltage Output - 0 V to 2.56 V
- Internal Precision Band-Gap Reference
- Single-Supply Operation: 5 V (±10%)
- Full Microprocessor Interface
- Fast: 1 xxs Voltage Settling to ±1/2 LSB
- Low power: 75 mW
- No User Trims Required
- Guaranteed Montonic Over Temperature
- All Errors Specified Tmin to Tmax
- Small 16-Lead DIP or 20-Lead PLCC Package
- Low Cost
Product Details
The AD557 DACPORT® is a complete voltage-output 8-bit digital-to-analog converter, including output amplifier, full microprocessor interface and precision voltage reference on a single monolithic chip. No external components or trims are required to interface, with full accuracy, an 8-bit data bus to an analog system.
The low cost and versatility of the AD557 DACPORT are the result of continued development in monolithic bipolar technologies.
The complete microprocessor interface and control logic is implemented with integrated injection logic (I2L), an extremely dense and low-power logic structure that is process-compatible with linear bipolar fabrication. The internal precision voltage reference is the patented low-voltage band-gap circuit which permits full-accuracy performance on a single +5 V power supply. Thin-film silicon-chromium resistors provide the stability required for guaranteed monotonic operation over the entire operating temperature range, while laser-wafer trimming of these thin-film resistors permits absolute calibration at the factory to within ±2.5 LSB; thus, no user-trims for gain or offset are required. A new circuit design provides voltage settling to ±1/2 LSB for a full-scale step in 800 ns.
The AD557 is available in two package configurations. The AD557JN is packaged in a 16-pin plastic, 0.3"-wide DIP. For surface mount applications, the AD557JP is packaged in a 20-pin JEDEC standard PLCC. Both versions are specified over the operating temperature range of 0°C to +70°C.
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Precision DAC Error Budget Tool
The Precision DAC Error Budget Tool is a web application that calculates the DC Accuracy of precision DAC signal chains. It shows how the static errors accumulate throughout your signal chain to quickly evaluate the design tradeoffs. Calculations include the DC errors introduced by Voltage References, Operation Amplifiers and Precision DACs.
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| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD557JNZ | Material Declaration | Reliability Data | 16-Lead PDIP | |
| AD557JPZ | Material Declaration | Reliability Data | 20-Lead Flatpack | |
| AD557JPZ-REEL | Material Declaration | Reliability Data | 20-Lead Flatpack | |
| AD557JPZ-REEL7 | Material Declaration | Reliability Data | 20-Lead Flatpack | |
| Wafer Fabrication Data |
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