DAC80508ZYZFR - 16-Bit 8-Ch SPI DAC | Texas Instruments
料号： DAC80508ZYZFR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.38 | $73.80 |
| 100 | $6.55 | $655.00 |
| 500 | $5.9 | $2,950.00 |
| 1,000 | $5.35 | $5,350.00 |
DAC80508ZYZFR 概述
A digital-to-analog converter (DAC) is a data-converter IC that transforms digital binary codes into analog output voltages, bridging digital processors and the analog world. Within the data-acquisition hierarchy, DACs sit alongside ADCs as core mixed-signal building blocks, and the DAC80508 belongs to the pin-compatible DACx0508 family of 16-, 14-, and 12-bit octal DACs used across industrial and instrumentation systems.
Key features include a precision internal 2.5-V reference with 5-ppm/C drift, eliminating external references in most designs, and user-selectable gain configurations delivering full-scale outputs of 1.25 V, 2.5 V, and 5 V. The SPI interface supports data rates up to 50 MHz with daisy-chaining, and an LDAC function enables simultaneous updates of all eight outputs. A power-on reset guarantees zero-scale or mid-scale outputs at startup.
Technically, the DAC80508 uses a resistor-string architecture with a per-channel output buffer amplifier, providing excellent linearity, low glitch energy, and the ability to drive capacitive loads directly. Each channel is independently powered down for energy savings in battery-operated instruments.
Typical applications include precision test and measurement equipment, industrial process control, motor control systems, and portable instrumentation. Low power consumption and the tiny WCSP footprint suit battery-powered and space-constrained designs.
For best performance, decouple VDD with 0.1-uF and 10-uF capacitors close to the pin, bypass the reference with 1 uF, and use a clean analog ground plane with separated digital and analog grounds to minimize noise coupling.
直接替换替代料： DAC80508ZYZFR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DAC80508ZYZFR （相同外形与封装尺寸） ——差异在于 Architecture, Interface, Mounting Type, Output Type, Package.
快速对比工具——选择替代料号进行并排对比：
DAC70508ZYZFR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DAC60508ZYZFR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DAC80501ZYZFR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DAC70501ZYZFR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DAC60501ZYZFR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DAC80508ZYZFR 最大额定值与电气特性
| 分辨率 | 16 bit |
| Number of Channels | 8 |
| 输出类型 | Voltage (buffered) |
| 接口 | SPI, up to 50 MHz, daisy-chainable |
| 电源电压 | 2.7 V to 5.5 V |
| Internal Reference | 2.5 V, 5 ppm/C |
| Gain Settings | 1.25 V, 2.5 V, 5 V full-scale (user selectable) |
| Architecture | Resistor string with output buffer |
| Power-On Reset | Zero-scale or mid-scale selectable |
| Channel Power-Down | Independent per-channel |
| LDAC Function | Simultaneous update of all 8 channels |
| 工作温度 | -40C to +125C |
| 封装 | 16-DSBGA (YZF) 2.0 mm x 2.0 mm |
| 安装类型 | Surface Mount (WCSP) |
| RoHS 状态 | Compliant |
| Family | DACx0508 pin-compatible 16/14/12-bit family |
DAC80508ZYZFR 引脚配置
| 引脚 A1 | VDD — Power supply, 2.7 V to 5.5 V |
| 引脚 B1 | GND — Ground |
| 引脚 C1 | VOUT0 — DAC channel 0 buffered output |
| 引脚 D1 | VOUT1 — DAC channel 1 buffered output |
| 引脚 A2 | VOUT2 — DAC channel 2 buffered output |
| 引脚 B2 | VOUT3 — DAC channel 3 buffered output |
| 引脚 C2 | VOUT4 — DAC channel 4 buffered output |
| 引脚 D2 | VOUT5 — DAC channel 5 buffered output |
| 引脚 A3 | VOUT6 — DAC channel 6 buffered output |
| 引脚 B3 | VOUT7 — DAC channel 7 buffered output |
| 引脚 C3 | SCLK — SPI serial clock, up to 50 MHz |
| 引脚 D3 | DIN — SPI serial data input |
| 引脚 A4 | SYNC — SPI frame sync / chip select |
| 引脚 B4 | LDAC — Load DAC, simultaneous update of all channels |
| 引脚 C4 | ALARM — Reference alarm indicator output |
| 引脚 D4 | CAP — Internal reference bypass capacitor pin |
典型应用
DAC80508ZYZFR 适用于 6 应用s: Test and Measurement Equipment, Industrial Process Control, Motor Control Systems, Portable and Battery-Powered Instruments, Optical and Sensor Bias Networks, Communications and RF Module Calibration.
Test and Measurement Equipment
The DAC80508ZYZFR fits programmable instrumentation such as bench supplies, signal generators, and automated test boards where eight independently controlled analog levels must fit in minimal board area. The true 16-bit resolution with the 2.5-V, 5-ppm/C internal reference provides drift-stable setpoints without an external reference, and the LDAC function updates all channels simultaneously to avoid skew in multi-point stimulus. At 2.0 mm x 2.0 mm, it enables dense multi-channel cards; its 50-MHz SPI keeps waveform update latency low when driven from an FPGA or MCU.
推荐
Industrial Process Control
In PLC analog output modules and process transmitters, the DAC80508ZYZFR converts controller setpoints into 0-5 V loop signals with 16-bit granularity. The wide -40C to +125C operating range and internal reference with 5-ppm/C drift maintain calibration across industrial temperature extremes, while per-channel power-down saves energy in partially used cards. Its SPI interface with daisy-chaining lets several octal DACs share one MCU SPI port, reducing isolation channel count in electrically noisy factory environments.
推荐
Motor Control Systems
The DAC80508ZYZFR generates torque, speed, and position reference signals in servo drives and multi-axis motor controllers. The LDAC pin enables glitch-free simultaneous update of all eight outputs, critical for phase-coherent multi-axis motion, and the 50-MHz SPI supports fast refresh from TI C2000-class MCUs. The buffered voltage outputs drive controller input networks directly, and the power-on reset guarantees outputs at zero-scale or mid-scale at startup for a defined drive state.
推荐
Portable and Battery-Powered Instruments
With a 2.7-V to 5.5-V single supply, low operating power, and independent per-channel power-down, the DAC80508ZYZFR suits handheld meters, portable data loggers, and battery-powered field instruments. Channels not in use can be powered down to extend battery life, and the 2.0 mm x 2.0 mm WCSP frees board area for batteries and wireless modules. The integrated 2.5-V reference removes the quiescent cost of an external reference IC, further reducing total power draw.
推荐
Optical and Sensor Bias Networks
Precision bias generation for photodiodes, MEMS, and laser drivers benefits from the DAC80508ZYZFR's 16-bit monotonic output and low-noise buffered outputs. Eight channels tune multiple bias points from one IC, and the 5-ppm/C reference keeps bias levels stable over temperature, which is essential for optical power calibration. When paired with a clean low-noise amplifier stage, the full-scale gain options (1.25 V, 2.5 V, 5 V) let designers match bias span to the transducer range.
推荐
Communications and RF Module Calibration
The DAC80508ZYZFR supplies calibration and control voltages for VCO tuning, PA bias, and variable gain amplifiers in radio modules. The tiny WCSP footprint fits inside RF module shields where board area is scarce, the 5-ppm/C internal reference holds tuning voltages stable, and the SPI daisy-chain allows multiple DACs to share a single isolated control bus. Buffered outputs drive varactor and bias networks directly with 16-bit control granularity.
推荐
推荐产品汇总
工程参考数据： DAC80508ZYZFR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DAC70508ZYZFR | DAC60508ZYZFR | DAC80501ZYZFR |
|---|---|---|---|---|
| Package | 16-DSBGA (YZF) 2.0 x 2.0 mm | 16-DSBGA (YZF) - same | 16-DSBGA (YZF) - same | 16-DSBGA (YZF) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 16 bit | 14 bit | 12 bit | 16 bit |
| Channels | 8 | 8 | 8 | 1 |
| 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 |
| SPI Interface | 50 MHz, daisy-chain | 50 MHz, daisy-chain | 50 MHz, daisy-chain | 50 MHz |
| LDAC Simultaneous Update | Yes (8 channels) | Yes (8 channels) | Yes (8 channels) | Yes (1 channel) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
关键差异点
- True 16-bit resolution with on-chip precision reference （对比 DAC60508ZYZFR)
- 8 independently powerable channels in 2.0 mm x 2.0 mm （对比 DAC80501ZYZFR)
- Board-area advantage over VQFN-packaged octal DACs （对比 DAC80508SRGER)
设计说明
The 16-DSBGA (YZF) WCSP uses a fine ball pitch requiring via-in-pad or microvia fanout. Place 0.1-uF and 10-uF decoupling capacitors for VDD within 2 mm of the supply ball, and bypass the CAP/reference pin with 1 uF per the TI datasheet typical application circuit. Verify the solder reflow profile for WCSP before production; hand rework is impractical at this pitch.
Use separate analog and digital ground returns. Route SPI traces (SCLK up to 50 MHz) away from the VOUT lines and reference bypass capacitor to prevent digital coupling onto analog outputs. A series 22-33 ohm resistor on SCLK at the driver reduces ringing on short traces without violating the 50-MHz timing budget.
Configure the power-on reset output state (zero-scale vs mid-scale) to match the safety requirements of your actuator or bias network before tapeout. Do not leave the LDAC pin floating if simultaneous updates are required; tie or drive it per the datasheet. Also confirm supply sequencing when VDD is shared with other rails to avoid undefined ALARM behavior at startup.
合规信息
RoHS compliant per TI product page and DigiKey listing. AEC-Q100 qualification not stated for this device.
