AD5545BRUZ - Dual 16-Bit Current-Output DAC | Analog Devices
MPN: AD5545BRUZ ✓ فعالAD5545BRUZ جائزہ
A multiplying DAC is a converter whose output is the product of a digital input code and an analog reference voltage, enabling four-quadrant operation when bipolar signals are applied. The AD5545 belongs to the current-output multiplying DAC category, which sits within the broader hierarchy of digital-to-analog converters -> data converters -> mixed-signal ICs -> semiconductor devices. Current-output architectures are favored where the reference must vary with a signal (such as in gain control, attenuators, or automatic test equipment) rather than being a fixed precision voltage.
Key features include a 2Q multiplying reference input, 0.5 µs full-scale settling time, and a bipolar output swing of up to ±15 V when used with an external high-voltage op amp. The serial interface is SPI/QSPI/MICROWIRE-compatible and supports high-speed write cycles. The dual-channel integration makes the device suitable for complex waveform generation, I/Q signal synthesis, and simultaneous update applications.
Typical applications include programmable gain/attenuation stages, digital waveform synthesis, ATE (automatic test equipment) calibration, industrial process control, and precision instrumentation. The wide reference input bandwidth allows the AD5545 to function as a digitally controlled variable attenuator when paired with a high-speed current-to-voltage op amp.
When designing with this DAC, ensure the external I-to-V op amp has sufficient bandwidth and slew rate to settle within the 0.5 µs specification. Decouple VDD with a 1 µF tantalum plus 0.1 µF ceramic combination placed close to the supply pin, and route the analog ground return directly to the load to avoid ground-loop errors.
This page synthesizes distributor pricing, parametric data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
کے لیے ڈراپ اِن متبادل AD5545BRUZ — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں AD5545BRUZ (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف DNL (Differential Non-Linearity), Full-Scale Output Current, INL (Integral Non-Linearity), Operating Temperature Range, Output Type.
AD5545BRUZ-REEL7
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AD5545BRU
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AD5545BRUZ-REEL
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AD5555BRUZ
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AD5545CRUZ
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
AD5545BRUZ زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| ریزولوشن | 16-bit (dual channel) |
| Number of Channels | 2 |
| آؤٹ پٹ کی قسم | Current output (unipolar) |
| Analog Supply Voltage | 4.5 V to 5.5 V |
| Full-Scale Output Current | 2 mA ±20% (set by VREF) |
| DNL (Differential Non-Linearity) | ±1 LSB (monotonic) |
| INL (Integral Non-Linearity) | ±1 LSB |
| Settling Time (to 1 LSB) | 0.5 µs |
| Reference Type | External (multiplying, 2Q) |
| Internal Feedback Resistor (RFB) | Yes (enhances temperature tracking with external op amp) |
| Digital Interface | Serial SPI / QSPI / MICROWIRE-compatible |
| Bipolar Output Capability | Up to ±15 V (with external op amp) |
| پیکیج | 16-TSSOP (RU-16) |
| آپریٹنگ درجہ حرارت رینج | -40 °C to +85 °C |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RoHS اسٹیٹس | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
AD5545BRUZ پن کنفیگریشن
| پن 1 | VOUTA — DAC A current output |
| پن 2 | REFA — DAC A reference input |
| پن 3 | RFBA — DAC A feedback resistor (internal) |
| پن 4 | VDD — Analog +5V supply |
| پن 5 | DGND — Digital ground |
| پن 6 | SCLK — Serial clock input |
| پن 7 | SDIN — Serial data input |
| پن 8 | CS — Chip select (active low) |
| پن 9 | LDAC — Load DAC (latch enable) |
| پن 10 | CLR — Asynchronous clear (active low) |
| پن 11 | NC — Not connected (per datasheet) |
| پن 12 | REFB — DAC B reference input |
| پن 13 | RFBB — DAC B feedback resistor (internal) |
| پن 14 | VOUTB — DAC B current output |
| پن 15 | AGND — Analog ground |
| پن 16 | NC — Not connected (per datasheet) |
عام استعمالات
AD5545BRUZ کے لیے موزوں ہے 6 ایپلیکیشنs: Programmable Gain Control / Attenuation, Automatic Test Equipment (ATE) Calibration, Precision Industrial Process Control, Digital Waveform Synthesis, Audio Attenuation and Mixing, Sensor Calibration and Trimming.
Programmable Gain Control / Attenuation
The AD5545BRUZ is well suited for digitally programmable gain stages because its multiplying reference input allows the analog signal to scale by the DAC code. With 2 mA full-scale current and 0.5 µs settling time, the part delivers 16-bit precise gain control when paired with an AD8038 current-to-voltage op amp. The dual-channel integration enables matched I/Q gain paths in transceivers. Compared to fixed-gain amplifiers, the AD5545BRUZ provides 65,536 steps of resolution per channel, ensuring monotonic gain control for AGC loops. The 16-TSSOP footprint also simplifies layout in dense RF front ends.
تجویز کردہ
Automatic Test Equipment (ATE) Calibration
In ATE systems, the AD5545BRUZ serves as a precision bipolar stimulus source for calibrating instruments such as multimeters, oscilloscope references, and source-measure units. The dual 16-bit channels enable simultaneous calibration of two ranges or channels, while ±15 V bipolar output swing (with external op amp) covers the voltage spans typical of industrial test fixtures. According to the manufacturer datasheet, the AD8065 is the recommended op amp for THD-critical specifications in this application. The 0.5 µs settling time enables fast test sequencing, and the SPI-compatible interface supports fast code updates under software control.
تجویز کردہ
Precision Industrial Process Control
The AD5545BRUZ fits 4-20 mA current loop emulation, actuator biasing, and setpoint generation in industrial control systems. Its 16-bit resolution provides 0.024% step granularity, suitable for valve positioning, motor speed reference, and temperature setpoint synthesis. The single 5V supply integrates cleanly with industrial 24V-rail-derived 5V systems via intermediate DC-DC converters. Compared to lower-resolution DACs, the AD5545BRUZ reduces control loop quantization error, improving the linearity of PID-driven processes in factory automation equipment.
تجویز کردہ
Digital Waveform Synthesis
The AD5545BRUZ can generate arbitrary analog waveforms when updated sequentially via its SPI interface from a microcontroller or FPGA. The 0.5 µs settling time supports waveform frequencies up to several hundred kHz with 16-bit amplitude accuracy. Dual channels enable simultaneous in-phase/quadrature synthesis for communications or differential stimulus. According to the AD5545/AD5555 datasheet, the current-output architecture with multiplying reference allows the waveform amplitude to be modulated by an external carrier signal, enabling complex modulation schemes such as amplitude-shift keying without additional mixers.
تجویز کردہ
Audio Attenuation and Mixing
Although primarily a precision instrumentation DAC, the AD5545BRUZ can function as a digitally controlled audio attenuator or summing node when its multiplying reference receives the audio signal. The 16-bit resolution yields 96 dB of attenuation range in 0.0015 dB steps, sufficient for studio-grade digital volume control. The dual channels enable stereo operation from a single 16-TSSOP device. Compared to dedicated audio DACs, the AD5545BRUZ trades sampling rate for linearity, making it better suited for analog audio gain control than full-bandwidth audio reproduction.
تجویز کردہ
Sensor Calibration and Trimming
The AD5545BRUZ serves as a digital trim source for sensor calibration in production test, replacing mechanical potentiometers with software-controlled offsets. The dual channels can trim two sensors (for example, a bridge sensor's zero and span) simultaneously using a single DAC. The 16-bit resolution supports trim accuracy better than 0.01% of full scale, while the 2 mA output current can directly drive low-impedance calibration networks. According to Analog Devices datasheet patterns, the AD5545BRUZ pairs naturally with instrumentation ADCs such as the AD7091 for closed-loop calibration routines.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا AD5545BRUZ — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | AD5545BRUZ-REEL7 | AD5545BRU | AD5555BRUZ | AD5545CRUZ |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-TSSOP (RU-16) | 16-TSSOP (RU-16) | 16-TSSOP (RU-16) | 16-TSSOP (RU-16) | 16-TSSOP (RU-16) |
| Resolution | 16-bit (dual) | 16-bit (dual) | 16-bit (dual) | 14-bit (dual) | 16-bit (dual) |
| Output Type | Current output, 2 mA FS | Current output, 2 mA FS | Current output, 2 mA FS | Current output, 2 mA FS | Current output, 2 mA FS |
| Supply Voltage | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V |
| DNL | ±1 LSB | ±1 LSB | ±1 LSB | ±1 LSB | ±1 LSB |
| Settling Time | 0.5 µs | 0.5 µs | 0.5 µs | 0.5 µs | 0.5 µs |
| RoHS Compliance | Yes | Yes | No (legacy lead-bearing) | Yes | Yes |
| Packaging | Tube | Tape & Reel (1000) | Tube | Tube | Tube |
اہم امتیازی خصوصیات
- Dual 16-bit resolution in single TSSOP-16 (بمقابلہTI DAC8831)
- Higher resolution than the 14-bit AD5555BRUZ (بمقابلہAD5555BRUZ)
- RoHS-compliant lead-free package (بمقابلہAD5545BRU)
ڈیزائن نوٹس
Decouple the +5V VDD pin with a 1 µF tantalum in parallel with a 0.1 µF ceramic capacitor placed as close to the device as possible (within 2-3 mm). The ceramic handles high-frequency switching transients from the serial interface, while the tantalum absorbs lower-frequency supply noise. According to the AD5545/AD5555 datasheet, the analog and digital ground pins should be joined at a single point near the device to prevent digital switching currents from corrupting the analog output.
Do not leave the reference input floating - even with both DACs disabled, leakage through the reference can shift the output. Tie unused REFA or REFB to ground or a fixed voltage through a 1 kΩ resistor. Also note that the internal RFB resistor is intended to be paired with an external I-to-V op amp in a transimpedance topology - do NOT use RFB as a fixed load resistor, or the temperature tracking benefit is lost. The AD8038 is the typical ADI-recommended companion for bandwidth, while the AD8065 is specified for THD-critical paths per the datasheet.
Route the serial interface signals (SCLK, SDIN, CS, LDAC) away from the analog outputs (VOUTA, VOUTB) to avoid digital-to-analog crosstalk. Keep digital traces short and surround them with ground. Use a series termination resistor (33-100 Ω) at the SCLK driver if the bus length exceeds 50 mm. Estimated: at a 50 MHz SCLK rate, a 10 cm trace without termination can introduce 100-200 ps of edge jitter, degrading settling time accuracy.
تعمیل کی معلومات
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified - this part targets industrial/commercial instrumentation rather than automotive. The non-RoHS predecessor AD5545BRU remains available for legacy designs.
