AD7393BCPZ - 12-Bit 3V DAC | Analog Devices | LFCSP-40
MPN: AD7393BCPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.36 | $7.36 |
| 10 | $6.8 | $68.00 |
| 100 | $6.1 | $610.00 |
| 500 | $5.5 | $2,750.00 |
| 1,000 | $5 | $5,000.00 |
AD7393BCPZ Overview
A digital-to-analog converter (DAC) is an electronic circuit that converts digital binary data into an analog voltage or current. The AD7393 is a voltage-output DAC, meaning it directly produces an analog voltage proportional to the digital input code. It is part of the broader category of data converters, which also includes ADCs (analog-to-digital converters). DACs are essential in systems where digital processing must interface with the analog world, such as audio playback, motor control, and instrumentation. The AD7393's single-supply operation simplifies power supply design, reducing system cost and complexity.
Key features of the AD7393BCPZ include 12-bit resolution, a 2.7 V to 5.5 V supply range, and a voltage output that is rail-to-rail. It has a typical settling time of 10 µs, ensuring fast response in dynamic applications. The device includes a power-on reset that clears the output to zero scale, preventing glitches during power-up. It also features a low power consumption of typically 1.5 mW at 3 V, making it suitable for battery-powered devices. The LFCSP-40 package provides excellent thermal performance and a small footprint.
Technically, the AD7393 uses a resistor-string architecture with a CMOS switch tree, providing monotonic performance and low glitch energy. The CBCMOS process combines bipolar and CMOS transistors, optimizing speed and power. The device has a maximum output voltage of VREF, which can be set externally or tied to the supply. It includes a reference input that can be driven by an external reference or the supply voltage. The digital interface is a simple parallel input, compatible with standard logic levels.
Typical applications for the AD7393BCPZ include portable instrumentation, battery-powered data acquisition systems, and programmable voltage sources. Its low power and small package make it ideal for handheld devices, while its 12-bit resolution suits precision control loops. The device is also used in industrial process control and medical devices where a stable, accurate analog output is required.
When designing with the AD7393BCPZ, ensure that the reference voltage is stable and well-decoupled to achieve full accuracy. The output can drive capacitive loads up to 100 pF without external compensation. For best performance, place decoupling capacitors close to the supply and reference pins.
Drop-in alternatives for AD7393BCPZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD7393BCPZ (same form factor and footprint) — differing in Interface Type, Output Type, Package, Settling Time.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7392BCPZ
✅ Drop-In✓ In Stock
$4.16 / Unit
View Datasheet →AD7393BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Number of DAC Channels | 1 |
| Output Type | Voltage |
| Settling Time | 10 µs |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Reference Voltage | External, up to VDD |
| Output Voltage Range | 0 V to VREF |
| Power Consumption | 1.5 mW at 3 V |
| Interface Type | Parallel |
| Operating Temperature Range | -40°C to +85°C |
| Package | 40-Lead LFCSP-VQ (6x6 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| MSL Level | 3 |
AD7393BCPZ Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.7 V to 5.5 V) |
| Pin 2 | VREF — Reference voltage input |
| Pin 3 | VOUT — Analog output voltage |
| Pin 4 | GND — Ground |
| Pin 5 | DB0 — Data bit 0 (LSB) |
| Pin 6 | DB1 — Data bit 1 |
| Pin 7 | DB2 — Data bit 2 |
| Pin 8 | DB3 — Data bit 3 |
| Pin 9 | DB4 — Data bit 4 |
| Pin 10 | DB5 — Data bit 5 |
| Pin 11 | DB6 — Data bit 6 |
| Pin 12 | DB7 — Data bit 7 |
| Pin 13 | DB8 — Data bit 8 |
| Pin 14 | DB9 — Data bit 9 |
| Pin 15 | DB10 — Data bit 10 |
| Pin 16 | DB11 — Data bit 11 (MSB) |
| Pin 17 | CS — Chip select (active low) |
| Pin 18 | WR — Write strobe (active low) |
| Pin 19 | LDAC — Load DAC (active low) |
| Pin 20 | CLR — Clear (active low) |
Typical Applications
AD7393BCPZ is suitable for 6 applications: Portable Instrumentation, Battery-Powered Data Acquisition, Programmable Voltage Source, Industrial Process Control, Medical Devices, Test and Measurement Equipment.
Portable Instrumentation
The AD7393BCPZ's low power consumption (1.5 mW at 3 V) and wide supply range (2.7 V to 5.5 V) make it ideal for battery-powered portable instruments. Its 12-bit resolution provides precise analog output for calibration and measurement functions. The compact LFCSP-40 package saves board space in handheld devices. Designers can directly interface the parallel bus to a microcontroller for set-point control. The rail-to-rail output simplifies connection to external amplifiers or comparators. With a settling time of 10 µs, it supports fast updates in dynamic measurement systems. The device's low power extends battery life, critical for field instruments. Its small footprint enables dense PCB layouts, reducing overall product size.
Recommended
Battery-Powered Data Acquisition
In battery-powered data acquisition systems, the AD7393BCPZ provides a programmable reference or excitation voltage. Its low power consumption ensures minimal drain on the battery, extending operational life. The 12-bit resolution allows fine adjustment of analog outputs for sensor excitation or set-point control. The wide supply range accommodates varying battery voltages as they discharge. The parallel interface enables fast updates from a microcontroller or FPGA. The small LFCSP package is ideal for compact, multi-channel designs. The device's monotonic performance ensures reliable operation in control loops. With a settling time of 10 µs, it can handle rapid output changes required in dynamic acquisition scenarios.
Recommended
Programmable Voltage Source
The AD7393BCPZ can be used as a programmable voltage source in test equipment or calibration systems. Its 12-bit resolution provides 4096 steps, allowing precise voltage setting. The output range from 0 V to VREF can be adjusted by selecting an appropriate reference. The low power consumption makes it suitable for portable calibrators. The parallel interface allows direct connection to a microprocessor for digital control. The device's fast settling time (10 µs) enables quick voltage changes in automated test sequences. The compact LFCSP package fits into space-constrained instruments. Its rail-to-rail output ensures full-scale swing without external circuitry.
Recommended
Industrial Process Control
In industrial process control, the AD7393BCPZ provides analog set-points for valves, actuators, or motor drives. Its 12-bit resolution ensures fine control of output parameters. The wide supply range (2.7 V to 5.5 V) allows operation from standard industrial power rails. The device's low power consumption reduces heat generation in control cabinets. The parallel interface enables fast updates from a PLC or microcontroller. The LFCSP package is robust for industrial environments. The device's monotonic performance ensures stable control loops. With a settling time of 10 µs, it can respond quickly to process changes, improving system responsiveness.
Recommended
Medical Devices
The AD7393BCPZ is suitable for medical devices requiring precise analog output, such as patient monitors or infusion pumps. Its low power consumption is critical for battery-operated portable medical equipment. The 12-bit resolution provides accurate control of dosage or alarm thresholds. The wide supply range accommodates various battery configurations. The small package size enables compact device design. The parallel interface allows integration with medical-grade microcontrollers. The device's reliability and monotonic performance are essential for safety-critical applications. The rail-to-rail output simplifies interface to actuators or displays.
Recommended
Test and Measurement Equipment
In test and measurement equipment, the AD7393BCPZ can generate precise analog voltages for calibration or stimulus. Its 12-bit resolution provides fine voltage steps for accurate testing. The fast settling time (10 µs) enables rapid waveform generation in automated test systems. The low power consumption reduces thermal drift in precision instruments. The parallel interface allows direct connection to DSPs or FPGAs for high-speed control. The compact LFCSP package is ideal for benchtop instruments with limited space. The device's monotonic performance ensures reliable output across the full range. The rail-to-rail output simplifies interface to external circuits.
Recommended
Recommended Products Summary
Engineering reference data for AD7393BCPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7392BCPZ | AD7393BRUZ | DAC121S101CIMK/NOPB | MCP4921-E/P |
|---|---|---|---|---|---|
| Package | 40-Lead LFCSP-VQ (6x6 mm) | 40-Lead LFCSP-VQ (6x6 mm) | TSSOP-16 | SOT-23-6 | PDIP-8 |
| Resolution | 12 bits | 10 bits | 12 bits | 12 bits | 12 bits |
| Interface | Parallel | Parallel | Parallel | SPI | SPI |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Settling Time | 10 µs | 10 µs | 10 µs | 8.5 µs | 4.5 µs |
| Power Consumption | 1.5 mW at 3 V | 1.5 mW at 3 V | 1.5 mW at 3 V | 0.5 mW at 3 V | 0.5 mW at 3 V |
| Output Type | Voltage | Voltage | Voltage | Voltage | Voltage |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Microchip Technology |
Key Differentiators
- Pin-compatible with 10-bit AD7392 (vs AD7392BCPZ)
- Low power consumption (vs DAC121S101CIMK/NOPB)
- Parallel interface (vs MCP4921-E/P)
Design Notes
Decouple the VDD pin with a 0.1 µF ceramic capacitor placed as close to the pin as possible. Additionally, a 10 µF tantalum capacitor can be used for bulk decoupling. The reference input (VREF) should also be decoupled with a 0.1 µF capacitor to ground to minimize noise. Proper decoupling ensures stable operation and reduces output glitches.
For optimal performance, use a solid ground plane and keep analog and digital grounds separate if possible. The LFCSP package has an exposed pad that should be soldered to the ground plane for thermal and electrical performance. Route the digital data lines away from the analog output to minimize coupling. Keep traces short and direct.
Ensure that the reference voltage (VREF) does not exceed the supply voltage (VDD). The output voltage cannot exceed VREF, so set VREF appropriately for the desired full-scale output. Also, avoid driving capacitive loads greater than 100 pF without a buffer, as this can cause instability. The parallel interface requires proper setup and hold times; refer to the datasheet timing diagrams.
Compliance Information
RoHS compliant per Analog Devices product page. Lead-free finish indicated by 'Z' suffix.
