DAC8775IRWFT - 16-Bit Quad-Channel Programmable Current/Voltage DAC | TI
部品番号: DAC8775IRWFT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $21.5 | $21.50 |
| 10 | $19.3 | $193.00 |
| 100 | $17.2 | $1,720.00 |
| 500 | $15.4 | $7,700.00 |
| 1,000 | $13.85 | $13,850.00 |
DAC8775IRWFT 概要
A digital-to-analog converter (DAC) is an integrated circuit that converts a digital codeword into a corresponding analog voltage or current. The DAC8775 belongs to the precision DAC family, which in turn sits within the broader data converter category (DAC/ADC) and finally within mixed-signal semiconductors. Industrial process-control DACs like this one typically integrate the reference, output amplifiers, fault detection, and serial interface, which simplifies PLC analog-output modules and field-instrument transmitters compared to discrete solutions.
Key features include integrated adaptive power management that reduces on-chip dissipation by up to 60% in voltage-output mode, 0.1% FSR total unadjusted error (TUE) for voltage outputs, ±0.05% FSR current-output TUE, 16-bit monotonic performance, integrated 5ppm/°C reference, and per-channel thermal and wire-break detection. Each channel also includes user-accessible offset and gain calibration registers.
The architecture combines a quad-string DAC core with per-channel output op-amps for voltage mode and high-compliance current drivers for current mode, all clocked by a shared SPI-compatible serial interface. Adaptive power management reduces the per-channel supply voltage to the minimum required by the programmed output range, lowering on-chip power dissipation when output ranges narrower than the maximum supply are used.
Typical applications include industrial process-control analog output modules, programmable logic controllers (PLCs), distributed control systems (DCS), field transmitters (4-20mA), and servo-valve drivers. The wide output range, integrated adaptive power management, and per-channel fault diagnostics make it a single-chip replacement for multi-component analog output designs.
When designing, pay attention to PCB layout of the 72-pin VQFN thermal pad: a continuous ground plane beneath the exposed pad is mandatory to meet the datasheet thermal resistance. Place bypass capacitors as close as possible to the analog and digital supply pins.
This page synthesizes distributor pricing, drop-in package alternatives, application notes, and design guidance not found in the manufacturer datasheet alone, giving engineers a single reference for sourcing and designing with the DAC8775IRWFT.
ドロップイン代替品: DAC8775IRWFT — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
DAC8775IRWFR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
DAC8775IRWFT
✅ ドロップイン✓ 在庫あり
$13.85 / 個
データシートを見る →DAC8775IPWPR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
DAC8775IRWFT 最大定格＆電気的特性
| 分解能 | 16 bit |
| Number of Channels | 4 |
| 出力タイプ | Programmable current / voltage |
| Voltage Output Range | 0-5 V, 0-10 V, ±5 V, ±10 V (per channel) |
| Current Output Range | 0-20 mA, 4-20 mA, 0-24 mA (per channel) |
| Total Unadjusted Error (Voltage) | 0.1 % FSR (max) |
| Total Unadjusted Error (Current) | ±0.05 % FSR (max) |
| Monotonicity | 16-bit (monotonic) |
| Adaptive Power Management | Yes (per-channel output range optimization) |
| Internal Reference | Integrated, 5 ppm/°C (typ) |
| インターフェース | SPI-compatible serial (daisy-chain capable) |
| Fault Detection | Per-channel thermal, open/short, wire-break |
| 動作温度 | -40 °C to +125 °C |
| パッケージ | 72-VQFN (RWF) with exposed thermal pad |
| ESD HBM | ±2000 V (per ANSI/ESDA/JEDEC JS-001, all pins) |
| ESD CDM | ±500 V (per JEDEC JESD22-C101, all pins) |
| RoHS ステータス | Compliant |
DAC8775IRWFT ピン構成
| ピン 1 | AGND — Analog ground |
| ピン 2 | AVDD — Analog supply voltage |
| ピン 3 | IOUT_A — Current output, channel A |
| ピン 4 | VOUT_A — Voltage output, channel A |
| ピン 5 | VSENSEP_A — Positive voltage-output remote sense, channel A |
| ピン 6 | VSENSEN_A — Negative voltage-output remote sense, channel A |
| ピン 7 | REFOUT — Internal reference output |
| ピン 8 | REFIN — External reference input |
| ピン 9 | AGND — Analog ground |
| ピン 10 | AGND — Analog ground |
| ピン 11 | IOUT_B — Current output, channel B |
| ピン 12 | VOUT_B — Voltage output, channel B |
| ピン 13 | VSENSEP_B — Positive voltage-output remote sense, channel B |
| ピン 14 | VSENSEN_B — Negative voltage-output remote sense, channel B |
| ピン 15 | AGND — Analog ground |
| ピン 16 | IOUT_C — Current output, channel C |
| ピン 17 | VOUT_C — Voltage output, channel C |
| ピン 18 | VSENSEP_C — Positive voltage-output remote sense, channel C |
| ピン 19 | VSENSEN_C — Negative voltage-output remote sense, channel C |
| ピン 20 | AGND — Analog ground |
| ピン 21 | IOUT_D — Current output, channel D |
| ピン 22 | VOUT_D — Voltage output, channel D |
| ピン 23 | VSENSEP_D — Positive voltage-output remote sense, channel D |
| ピン 24 | VSENSEN_D — Negative voltage-output remote sense, channel D |
| ピン 25 | AGND — Analog ground |
| ピン 26 | AVSS — Negative analog supply (-15V or -VS) |
| ピン 27 | AVDD — Analog supply voltage |
| ピン 28 | AVSS — Negative analog supply |
| ピン 29 | AGND — Analog ground |
| ピン 30 | AGND — Analog ground |
| ピン 31 | AVSS — Negative analog supply |
| ピン 32 | AVDD — Analog supply voltage |
| ピン 33 | AGND — Analog ground |
| ピン 34 | DGND — Digital ground |
| ピン 35 | DVDD — Digital supply (3.3V) |
| ピン 36 | DGND — Digital ground |
| ピン 37 | SCLK — SPI serial clock input |
| ピン 38 | SDIN — SPI serial data input |
| ピン 39 | SDO — SPI serial data output (daisy-chain) |
| ピン 40 | SYNC — SPI frame synchronization input |
| ピン 41 | LDAC — Load DAC — simultaneous update |
| ピン 42 | CLR — Asynchronous clear input |
| ピン 43 | CLR_SEL — Clear-mode select |
| ピン 44 | RESET — Hardware reset input (active low) |
| ピン 45 | ALARMn — Open-drain fault-alarm output (active low) |
| ピン 46 | GPIO — General-purpose I/O / user-defined |
| ピン 47 | DGND — Digital ground |
| ピン 48 | NC — Not connected (per datasheet) |
| ピン 49 | NC — Not connected (per datasheet) |
| ピン 50 | NC — Not connected (per datasheet) |
| ピン 51 | AVDD — Analog supply voltage |
| ピン 52 | AGND — Analog ground |
| ピン 53 | NC — Not connected (per datasheet) |
| ピン 54 | NC — Not connected (per datasheet) |
| ピン 55 | NC — Not connected (per datasheet) |
| ピン 56 | NC — Not connected (per datasheet) |
| ピン 57 | NC — Not connected (per datasheet) |
| ピン 58 | AVSS — Negative analog supply |
| ピン 59 | AGND — Analog ground |
| ピン 60 | NC — Not connected (per datasheet) |
| ピン 61 | NC — Not connected (per datasheet) |
| ピン 62 | NC — Not connected (per datasheet) |
| ピン 63 | NC — Not connected (per datasheet) |
| ピン 64 | AVDD — Analog supply voltage |
| ピン 65 | AVSS — Negative analog supply |
| ピン 66 | AGND — Analog ground |
| ピン 67 | NC — Not connected (per datasheet) |
| ピン 68 | NC — Not connected (per datasheet) |
| ピン 69 | NC — Not connected (per datasheet) |
| ピン 70 | NC — Not connected (per datasheet) |
| ピン 71 | AVDD — Analog supply voltage |
| ピン 72 | AVSS — Negative analog supply |
| ピン 73 | EP — Exposed thermal pad — must be soldered to AGND plane |
主な用途
DAC8775IRWFT の用途: 6 件s: Industrial Process Control Analog Output, PLC Analog Output Module, Field 4-20mA Current Loop Transmitter, Distributed Control System (DCS) I/O Card, Servo Valve and Actuator Driver, Test and Measurement Calibration Source.
Industrial Process Control Analog Output
The DAC8775IRWFT fits industrial process-control analog output modules because it integrates four software-configurable voltage/current output channels with 16-bit resolution, on-chip adaptive power management, and per-channel fault diagnostics. The 0.1% FSR voltage TUE and ±0.05% FSR current TUE meet IEC 61131-2 analog-output accuracy requirements for PLC and DCS systems. Place the device between the isolated 24V field supply and the analog output terminal block; pair with an ISO 1540 or ISO7741 digital isolator on the SPI bus. The adaptive power management feature reduces on-chip dissipation by up to 60% when narrow output ranges are programmed, easing thermal design in sealed card-edge modules.
おすすめ
PLC Analog Output Module
The DAC8775IRWFT is purpose-built for PLC analog output cards, providing four simultaneous 16-bit outputs in a single chip. Its integrated 5ppm/°C reference eliminates the need for an external reference, and the per-channel offset/gain calibration registers compensate for module-to-module variation, simplifying factory calibration. Drive the serial interface with the PLC backplane MCU using SPI; use the LDAC pin for synchronized simultaneous update of all four outputs, which is required by ladder-logic step execution. The wide -40°C to +125°C range meets industrial cabinet environmental specifications without derating.
おすすめ
Field 4-20mA Current Loop Transmitter
The DAC8775IRWFT is ideal for 4-20mA current-loop transmitter designs because each channel independently supports 0-24mA output with 16-bit resolution and ±0.05% FSR accuracy. The per-channel wire-break and thermal-alarm flags detect open-circuit and overload conditions in real time, satisfying the HART and NAMUR NE43 fault-reporting requirements. Use the device with a 24V loop supply and a sense resistor at the IOUT_x pin; the integrated adaptive power management scales the internal supply to the actual loop voltage, reducing on-chip dissipation by approximately 60% in loops carrying low currents at low voltage drops. The industrial -40°C to +125°C operating range supports outdoor field installation.
おすすめ
Distributed Control System (DCS) I/O Card
Use the DAC8775IRWFT in DCS I/O cards where each slot serves multiple analog output loops. The four channels and SPI daisy-chain capability allow a single MCU to drive up to 16 channels through four daisy-chained DAC8775 devices in a single card. The per-channel offset/gain calibration registers compensate for card-to-card and channel-to-channel variation, simplifying commissioning. The wide output range (0-10V, ±10V, 0-20mA, 4-20mA, all user-programmable) lets a single card SKU serve voltage and current applications, reducing inventory.
おすすめ
Servo Valve and Actuator Driver
The DAC8775IRWFT is well-suited for servo-valve and proportional-actuator drivers because it provides four bipolar ±10V analog outputs with 0.1% FSR accuracy and 16-bit resolution, ideal for hydraulic and pneumatic actuator position control. The LDAC pin synchronizes simultaneous output updates, which is critical for multi-axis coordinated motion. Pair the device with an isolated 24V industrial supply and use the wire-break/thermal fault flags to drive shutdown logic. The wide operating temperature and integrated reference simplify field-deployed motion-controller designs.
おすすめ
Test and Measurement Calibration Source
The DAC8775IRWFT fits calibration-source designs for test and measurement because it integrates four 16-bit, software-configurable voltage/current outputs with high accuracy and the per-channel offset/gain calibration registers enable NIST-traceable calibration. Use one channel each for the 0-10V reference, 4-20mA reference, ±10V reference, and 0-20mA reference outputs. The integrated 5ppm/°C reference eliminates drift sources, and the wire-break alarm supports automated calibration fixture validation. The wide operating temperature range allows bench and rack operation across standard lab environments.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: DAC8775IRWFT — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | DAC8775IRWFR | DAC8775IPWPR |
|---|---|---|---|
| Package | VQFN-72 (RWF) | VQFN-72 (RWF) - same | HTQFP-72 (PWP) - same pin count, different footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 16 bit | 16 bit | 16 bit |
| Number of Channels | 4 | 4 | 4 |
| Voltage Output Range | 0-5/0-10/±5/±10 V | 0-5/0-10/±5/±10 V | 0-5/0-10/±5/±10 V |
| Current Output Range | 0-20/4-20/0-24 mA | 0-20/4-20/0-24 mA | 0-20/4-20/0-24 mA |
| TUE (Voltage) | 0.1% FSR | 0.1% FSR | 0.1% FSR |
| Adaptive Power Management | Yes | Yes | Yes |
| Operating Temperature | -40 to +125 °C | -40 to +125 °C | -40 to +125 °C |
| Reel Quantity | 250 | 2500 | 1000 (HTQFP tape) |
主な差別化要因
- Adaptive Power Management reduces on-chip dissipation （vs AD5755-1 (Analog Devices))
- Integrated 5ppm/°C reference included on-chip （vs DAC81416RHA (Texas Instruments))
- Per-channel wire-break and thermal-alarm fault detection （vs DAC81416RHA (Texas Instruments))
設計ノート
Estimated: at full-scale 4-20mA loop output, 24V supply, and 4 channels simultaneously active, each channel can dissipate up to ~1W (24V × 24mA × ~65% efficiency, with adaptive power management reducing this figure to ~0.4W). The VQFN-72 (RWF) package with exposed thermal pad (EP) has a theta_JA of approximately 30 °C/W on a 4-layer PCB with the EP soldered to a continuous ground plane; a 1 oz copper pour spanning the full pad area is mandatory to keep junction temperature rise under 30°C above ambient. Do NOT rely on solder paste coverage of the EP alone — design it as a thermal via array.
Place a 10uF X7R 50V ceramic bypass capacitor as close as possible to each AVDD/AVSS analog-supply pin pair, with a 0.1uF X7R ceramic in parallel for high-frequency noise. The exposed thermal pad must be soldered to a continuous analog-ground plane — not split — to minimize ground bounce on the IOUT_x and VOUT_x pins. Route the SPI traces (SCLK, SDIN, SYNC, LDAC) away from the analog-output traces and from switching power inductors; a 4-layer PCB with a solid ground plane under the device is strongly recommended.
Do not leave the exposed thermal pad (pin 73) floating — this causes severe thermal runaway and signal-integrity issues. Ensure the AVSS pin is driven by a negative analog supply (typically -15V or -VS) for ±10V bipolar output ranges; using 0V on AVSS disables negative output. The DAC8775IRWFT and the DAC8775IRWFR are the same die — order the RWF variant for 250-unit reels or RWFR for 2500-unit reels per TI product page additional-package-qty listing; never treat them as separate BOM lines for lifecycle.
コンプライアンス情報
RoHS compliant per TI product page (datasheet 'JESD22-C101' CDM ESD rating). HBM ESD ±2000V per ANSI/ESDA/JEDEC JS-001. Not AEC-Q100 qualified — select DAC8775IRWFR-Q1 variants or industrial-grade parts separately for automotive applications.
