DAC80508ZYZFT - 16-Bit Octal SPI DAC | Texas Instruments
MPN： DAC80508ZYZFT ✓ 啟用中DAC80508ZYZFT 概覽
A digital-to-analog converter is a data-conversion IC that translates digital binary codes into analog voltages, bridging the digital processor domain and the analog signal domain in mixed-signal systems. The DAC80508 belongs to the pin-compatible DACx0508 family, which spans 16-, 14-, and 12-bit resolution variants within the broader data-acquisition semiconductor hierarchy.
Key features include 16-bit resolution with +/-1 LSB INL, a 5-us output settling time, and an internal reference with only 5 ppm/C temperature drift. The device operates from a single 1.7-V to 5.5-V supply, supports SPI clock rates up to 50 MHz, and offers a user-selectable gain configuration delivering full-scale outputs of 1.25 V, 2.5 V, or 5 V with an external reference. A power-on reset clears registers to zero-scale, and per-channel power-down mode reduces current to 0.5 uA per channel for battery-powered designs.
Architecturally, the DAC80508 uses a resistor-string (R-2R derived string) core with an output buffer amplifier per channel, ensuring rail-to-rail output swing and low output impedance. The DSBGA-16 package minimizes board area, making it suitable for space-constrained portable equipment and dense multi-channel analog boards.
Typical applications include precision instrumentation, industrial process control, motor control loops, and portable medical devices, where the combination of 16-bit accuracy, low drift, and low power is critical.
When designing, decouple AVDD and DVDD with 0.1-uF and 1-uF capacitors placed close to the pins, bypass the VREF output with 1 uF, and keep SPI traces short and away from high-speed digital lines to minimize crosstalk.
直接替換替代品，適用於 DAC80508ZYZFT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DAC80508ZYZFT （相同外形與佔位） — 差異在於 Architecture, Interface, Mounting Type, Output Type, Package.
DAC80508ZYZFR
✅ 直接替換聯絡詢價
查看資料表 →DAC70508ZYZFT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DAC60508ZYZFT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DAC80508ZYZT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DAC80508ZYZFT 最大額定值與電氣特性
| 解析度 | 16 bit |
| Number of Channels | 8 |
| 介面 | SPI (up to 50 MHz) |
| Architecture | Resistor-string, buffered voltage output |
| 供應電壓 | 1.7 V to 5.5 V |
| INL | +/-1 LSB |
| Output Settling Time | 5 us |
| Internal Reference | 2.5 V, 5 ppm/C |
| Full-Scale Output | 1.25 V / 2.5 V / 5 V (gain-selectable, 5 V with external reference) |
| Power-Down Current per Channel | 0.5 uA |
| 輸出類型 | Buffered voltage, rail-to-rail |
| Power-On Reset | Registers cleared to zero-scale |
| 封裝 | DSBGA-16 (YZF), ~2.0 mm x 2.0 mm |
| 安裝類型 | Surface Mount (WLCSP) |
| RoHS 狀態 | Compliant |
DAC80508ZYZFT 腳位配置
| 腳位 A1 | VOUTA — DAC channel A output |
| 腳位 A2 | VOUTB — DAC channel B output |
| 腳位 A3 | VOUTC — DAC channel C output |
| 腳位 B1 | VOUTD — DAC channel D output |
| 腳位 B2 | GND — Ground |
| 腳位 B3 | AVDD — Analog supply, 1.7 V to 5.5 V |
| 腳位 C1 | VOUTE — DAC channel E output |
| 腳位 C2 | DVDD — Digital supply |
| 腳位 C3 | VOUTF — DAC channel F output |
| 腳位 D1 | VOUTG — DAC channel G output |
| 腳位 D2 | VOUTH — DAC channel H output |
| 腳位 D3 | VREFIN/VREFOUT — Reference output/input; 2.5-V internal reference |
典型應用
DAC80508ZYZFT 適用於 6 應用s: Precision Instrumentation, Industrial Process Control, Motor Control Loops, Portable Medical Devices, Test and Measurement Equipment, Optical and Sensor Bias Networks.
Precision Instrumentation
The DAC80508ZYZFT fits precision instrumentation because its true 16-bit resolution with +/-1 LSB INL and the integrated 2.5-V, 5-ppm/C reference keep output drift negligible over temperature without an external precision reference. Eight buffered channels let one device drive multiple setpoints or calibration offsets in bench instruments and data acquisition front ends. Placed after an MCU SPI bus running at up to 50 MHz, each output settles in 5 us, supporting fast autoranging and gain-calibration sequences with deterministic, low-noise analog setpoints.
推薦
Industrial Process Control
In industrial process control, the DAC80508 provides eight isolated-friendly analog command outputs (for valve positioners, 4-20 mA transmitter driver stages, and actuator setpoints) from a single chip, reducing board area and BOM count. The 1.7-V to 5.5-V supply range fits standard 3.3-V or 5-V control rails, and the power-on reset guarantees outputs start at zero-scale for fail-safe system startup. Its 5 ppm/C reference drift ensures setpoint accuracy across wide factory temperature swings, while 16-bit resolution supports fine control-loop granularity demanded by modern process automation.
推薦
Motor Control Loops
For servo drives and precision motor controllers, the DAC80508 generates analog torque, velocity, and offset references for multiple axes from one device. Its 5-us settling time keeps reference updates in phase with fast control-loop interrupts on TI C2000 MCUs, and the rail-to-rail buffered outputs drive ADC reference or comparator threshold inputs directly. The 16-bit resolution enables sub-0.002% setpoint granularity, improving low-speed smoothness in robotics and CNC applications where quantization-induced torque ripple must be minimized.
推薦
Portable Medical Devices
Portable medical devices benefit from the DAC80508's 0.5-uA per-channel power-down current and 1.7-V minimum supply, extending battery life in infusion pumps, portable patient monitors, and handheld diagnostics. The 2.0 mm x 2.0 mm DSBGA-16 package fits space-constrained wearable and handheld enclosures. The integrated 5 ppm/C reference maintains dosing or stimulation output accuracy without periodic calibration, supporting safety-critical analog accuracy, while the power-on reset to zero-scale ensures no spurious outputs at battery insertion.
推薦
Test and Measurement Equipment
In automated test equipment and programmable sources, the DAC80508 provides eight independent programmable bias and threshold voltages with 16-bit accuracy. The 50-MHz SPI allows rapid pattern updates, and gain configuration supports 1.25-V, 2.5-V, or 5-V full-scale ranges selectable in system, letting one hardware platform cover multiple signal ranges. Low reference drift preserves calibration between service intervals, reducing rack instrument downtime and re-calibration cost in production test environments.
推薦
Optical and Sensor Bias Networks
Laser diode bias, photodetector gain voltage (Vcal/APD bias trim), and MEMS sensor offset networks use the DAC80508 to set multiple precision analog trims digitally. The 16-bit resolution provides fine trim steps for laser bias current controllers and APD gain adjustment, while the 5 ppm/C reference keeps bias points stable over temperature - critical for optical link budget consistency. Buffered rail-to-rail outputs drive op-amp-based V-to-I converter stages directly without external buffering in most designs.
推薦
推薦產品摘要
工程參考資料，適用於 DAC80508ZYZFT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | DAC80508ZYZFR | DAC70508ZYZFT | DAC60508ZYZFT |
|---|---|---|---|---|
| Package | DSBGA-16 (YZF) | DSBGA-16 (YZF) - same | DSBGA-16 (YZF) - same | DSBGA-16 (YZF) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 16 bit | 16 bit | 14 bit | 12 bit |
| Channels | 8 | 8 | 8 | 8 |
| Internal Reference | 2.5 V, 5 ppm/C | 2.5 V, 5 ppm/C | 2.5 V, 5 ppm/C | 2.5 V, 5 ppm/C |
| Supply Voltage | 1.7 V to 5.5 V | 1.7 V to 5.5 V | 1.7 V to 5.5 V | 1.7 V to 5.5 V |
| Interface | SPI up to 50 MHz | SPI up to 50 MHz | SPI up to 50 MHz | SPI up to 50 MHz |
主要差異化特點
- True 16-bit accuracy in a 2 mm x 2 mm footprint (對比DAC60508ZYZFT)
- Integrated 5 ppm/C reference eliminates external VREF BOM cost (對比DAC70508ZYZFT)
- 0.5-uA per-channel power-down for battery designs (對比DAC80508ZYZFR)
設計說明
Decouple AVDD and DVDD each with a 0.1-uF ceramic capacitor in parallel with 1 uF, placed within 2 mm of the DSBGA balls. Bypass the VREF output with 1 uF. For WLCSP assembly, follow TI's recommended NSMD pad geometry and via-in-pad rules; the YZF package requires accurate stencil design to avoid solder bridging on the 0.4-mm ball pitch.
Keep SCLK, DIN, SYNC, and SDO traces short (under 50 mm) and route them on a layer adjacent to a solid ground plane. Separate the SPI bus from VOUT traces and the VREF node to prevent digital crosstalk from degrading the 16-bit noise floor. A series 33-ohm resistor on SCLK reduces ringing at 50-MHz operation.
Do not exceed 5.5 V on AVDD. When using the 5-V full-scale gain mode, an external reference is required - the internal 2.5-V reference only supports 1.25-V and 2.5-V full scale. Remember that power-on reset clears all DAC registers to zero-scale; designs requiring defined mid-scale startup must issue DAC codes immediately after power-good.
合規資訊
RoHS compliant per DigiKey listing. Additional compliance details available on TI.com product quality pages.
