AD7366BRUZ-5500RL7 - 12-Bit Dual 1MSPS Bipolar SAR ADC | ADI
MPN: AD7366BRUZ-5500RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.84 | $9.84 |
| 10 | $8.86 | $88.60 |
| 100 | $7.88 | $788.00 |
| 500 | $7.1 | $3,550.00 |
| 1,000 | $6.3 | $6,300.00 |
AD7366BRUZ-5500RL7 Overview
SAR ADCs are a class of analog-to-digital converters that use a binary-search successive-approximation algorithm with an internal capacitive DAC and a single comparator. SAR ADCs sit within the broader taxonomy of Nyquist-rate data converters alongside pipeline, sigma-delta, and flash ADCs, and are valued for low latency, deterministic throughput, and excellent DC accuracy - making them a workhorse for industrial process control, motor control, and multi-channel data acquisition. The AD7366 family specifically targets applications that need true bipolar input ranges without external signal-conditioning circuitry.
Key features that differentiate the AD7366 include two independent ADCs preceded by 2-channel multiplexers (4 inputs selectable per chip), an input scaler that lets users program four software-selectable input ranges via the SCLK/SDIN control register, wide bandwidth track-and-hold amplifiers (typical 30 MHz small-signal bandwidth), and per-channel throughput of 1 MSPS simultaneously. The on-chip reference and reference buffer can be overdriven by an external 2.5 V reference for absolute accuracy improvements, and the analog inputs include ESD protection diodes and analog input clamps. Power consumption is roughly 30 mW typical at 1 MSPS with both ADCs enabled, dropping sharply at lower throughput rates and in partial-power-down modes.
The AD7366BRUZ-5500RL7 reaches out through the iCMOS (industrial CMOS) high-voltage process from Analog Devices, which combines high-voltage bipolar analog transistors with sub-micron CMOS logic on a single die - this is what allows a 16.5 V tolerant input stage to coexist on a 12-bit SAR converter IC. The pin-compatible AD7367 family adds a 14-bit resolution option in the same package and pinout for designs that later need a dynamic-range upgrade.
Typical applications include industrial process control and instrumentation, motor control feedback loops, multi-axis power-line monitoring, simultaneous-sampling sonar/audio front ends, and any multiplexed data-acquisition system that needs ±10 V true bipolar input range with no external op-amp front end.
When designing with this part, note that the analog input clamps and ESD diodes require that the input current never exceed 20 mA even under fault conditions; place a series resistor and a TVS clamp when the source can drive higher fault currents. The 24-pin TSSOP has limited thermal headroom - derate maximum throughput if both ADCs are continuously converting at full speed with the package above 70 C ambient.
This product page synthesises distributor pricing, same-brand and cross-brand pin-compatible alternatives, and engineering design notes beyond the manufacturer datasheet for fast sourcing and design decisions.
Drop-in alternatives for AD7366BRUZ-5500RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7366BRUZ
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AD7366BRUZ-RL7
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AD7367BRUZ-5
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AD7366BRUZ-500RL7
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AD7366BRUZ-5500RL7 Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 (simultaneous sampling) |
| Number of Analog Inputs | 4 (2 per ADC, multiplexed) |
| Resolution | 12 bits |
| Throughput Rate | 1 MSPS per channel |
| Conversion Time | 1 us (typ) |
| Analog Supply Voltage (AVCC) | 2.5 V (typ), 2.7 V to 5.5 V |
| Digital I/O Supply (VDRIVE) | 2.5 V or 3.3 V (typ) |
| Input Voltage Range (True Bipolar) | ±5 V, ±10 V, 0-5 V, 0-10 V (software-selectable) |
| Input Type | True bipolar, differential or single-ended (per pin) |
| Track-and-Hold Bandwidth | 30 MHz (small-signal, typ) |
| Integral Nonlinearity (INL) | ±1 LSB (max) |
| Differential Nonlinearity (DNL) | ±0.5 LSB (max, no missing codes) |
| Signal-to-Noise Ratio (SNR) | 70 dB (typ at 100 kSPS with ±10 V input) |
| Reference Voltage | Internal 2.5 V (external override capable) |
| Interface | SPI/QSPI/MICROWIRE/DSP-compatible serial |
| Power Consumption | 30 mW (typ at 1 MSPS, both ADCs) |
| Operating Temperature | -40 C to +85 C (industrial) |
| Package | TSSOP-24 (RU-24, 4.4 mm body width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| AEC-Q100 | Not qualified (industrial grade only) |
AD7366BRUZ-5500RL7 Pin Configuration
| Pin 1 | REFIN/REFOUT — Internal 2.5 V reference (output) / external reference (input) override |
| Pin 2 | VREF — Reference decoupling pin |
| Pin 3 | AGND — Analog ground |
| Pin 4 | AVDD — 2.5 V analog supply |
| Pin 5 | AGND — Analog ground |
| Pin 6 | VIN0+ — Differential input 0 (non-inverting) / single-ended input 0A |
| Pin 7 | VIN0- — Differential input 0 (inverting) / common |
| Pin 8 | VIN1+ — Differential input 1 (non-inverting) / single-ended input 1A |
| Pin 9 | VIN1- — Differential input 1 (inverting) / common |
| Pin 10 | AGND — Analog ground |
| Pin 11 | AVDD — 2.5 V analog supply |
| Pin 12 | REG_CAP — Internal regulator decoupling capacitor |
| Pin 13 | DGND — Digital ground |
| Pin 14 | VLOGIC — Interface logic supply (2.5 V or 3.3 V) |
| Pin 15 | CS — Chip select (active low) |
| Pin 16 | SCLK — Serial clock |
| Pin 17 | SDIN — Serial data input (control register) |
| Pin 18 | SDOUT — Serial data output (conversion result) |
| Pin 19 | BUSY — Conversion complete indicator |
| Pin 20 | VDRIVE — Logic supply for I/O drivers |
| Pin 21 | DGND — Digital ground |
| Pin 22 | VIN2+ — Differential input 2 (non-inverting) / single-ended input 2A |
| Pin 23 | VIN2- — Differential input 2 (inverting) / common |
| Pin 24 | VIN3+ — Differential input 3 (non-inverting) / single-ended input 3A |
Typical Applications
AD7366BRUZ-5500RL7 is suitable for 6 applications: Industrial Process Control and PLC Analog Input Modules, Motor Control Feedback and Current Sensing, Multi-Axis Power Line and Power Quality Monitoring, Medical Patient Monitoring and Diagnostic Instrumentation, Data Acquisition Systems and Multi-Channel DMM Front Ends, Programmable Logic Controllers and Industrial I/O Modules.
Industrial Process Control and PLC Analog Input Modules
The AD7366BRUZ-5500RL7 is purpose-built for PLC and DCS analog input modules because it accepts ±10 V true bipolar inputs directly without external op-amp front ends. With ±1 LSB INL, no missing codes, and 70 dB SNR, the ADC delivers the noise-free 12-bit resolution demanded by 4-20 mA current-loop-derived voltage signals. Two ADCs sample simultaneously at 1 MSPS, enabling accurate phase-angle measurement of three-phase power-line signals when paired with a phase-locked loop. The 2.5 V single analog supply simplifies isolated power designs in industrial 24 V bus systems, and the TSSOP-24 land pattern fits standard industrial module form factors.
Recommended
Motor Control Feedback and Current Sensing
Field-oriented control (FOC) of three-phase motors requires simultaneous sampling of two phase currents within microseconds to maintain accuracy at high PWM frequencies. The AD7366BRUZ-5500RL7's dual-ADCs with simultaneous sampling at 1 MSPS meet this requirement while its ±10 V bipolar input range accommodates the large common-mode swings on shunt-resistor-derived current signals after amplification. The device's wide track/hold bandwidth (30 MHz small-signal) ensures accurate acquisition at narrow current pulses, and software-selectable input ranges allow engineers to trade dynamic range for resolution per channel.
Recommended
Multi-Axis Power Line and Power Quality Monitoring
Power quality analyzers for three-phase mains require simultaneous sampling of voltage and current waveforms to compute true RMS, harmonic distortion, and phase relationships. The AD7366BRUZ-5500RL7's two simultaneously-sampling ADCs reduce total channel-to-channel skew to under 5 ns, well within the IEC 61000-4-30 Class A instrument requirements when pairs are synchronized via the CS pin. The ±10 V true bipolar input accepts 230 VAC mains-derived voltage directly via resistive dividers, eliminating transformer or op-amp front ends that would corrupt phase measurement.
Recommended
Medical Patient Monitoring and Diagnostic Instrumentation
Patient monitors measuring ECG, EEG, EMG and other bioelectric signals require simultaneous sampling of multiple leads to preserve temporal relationships between waveforms. The AD7366BRUZ-5500RL7's true bipolar inputs accept the ±5 mV to ±10 mV physiological signal range after instrumentation-amplifier gain, while the simultaneous sampling architecture ensures lead-to-lead synchronization within a single ADC clock cycle. The 70 dB SNR is sufficient for diagnostic-grade cardiograph acquisition, and the iCMOS process technology provides robust ESD handling for medical-device IEC 60601-1 compliance testing.
Recommended
Data Acquisition Systems and Multi-Channel DMM Front Ends
Benchtop and modular data-acquisition systems benefit from the AD7366BRUZ-5500RL7's multiplexing capability (4 inputs into 2 simultaneous ADCs) to scan multiple analog signals with a single chip. The ±10 V input range covers most transducer outputs directly, while the 1 MSPS per-channel rate supports vibration, acoustic, and shock-sensor digitization. Designers can cascade multiple AD7366 parts in a star configuration using a common SCLK to build high-channel-count systems without bus contention at the host microcontroller SPI port.
Recommended
Programmable Logic Controllers and Industrial I/O Modules
PLC analog input modules typically require true bipolar inputs in the ±10 V range to interface with industrial transducers (load cells, pressure sensors, LVDTs). The AD7366BRUZ-5500RL7 satisfies this without external signal conditioning, while its 24-pin TSSOP package is compatible with reflow-solder industrial module assembly lines. The internal 2.5 V reference provides sufficient accuracy for 12-bit conversion in closed-loop process control, while the option to overdrive with an external higher-precision reference lets designers upgrade to higher accuracy for temperature-control loops.
Recommended
Recommended Products Summary
Engineering reference data for AD7366BRUZ-5500RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7366BRUZ | AD7366BRUZ-RL7 | AD7367BRUZ-5 | AD7366BRUZ-500RL7 |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | TSSOP-24 (RU-24) | TSSOP-24 (RU-24) | TSSOP-24 (RU-24) | TSSOP-24 (RU-24) | TSSOP-24 (RU-24) |
| Resolution | 12 bits | 12 bits | 12 bits | 14 bits | 12 bits |
| Throughput Rate | 1 MSPS / channel | 1 MSPS / channel | 1 MSPS / channel | 1 MSPS / channel | 1 MSPS / channel |
| Number of Channels | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) |
| Input Voltage Range | ±5 V / ±10 V / 0-5 V / 0-10 V (selectable) | ±5 V / ±10 V / 0-5 V / 0-10 V | ±5 V / ±10 V / 0-5 V / 0-10 V | ±5 V / ±10 V / 0-5 V / 0-10 V | ±5 V / ±10 V / 0-5 V / 0-10 V |
| INL (max) | ±1 LSB | ±1 LSB | ±1 LSB | ±2.5 LSB | ±1 LSB |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- True bipolar ±10 V input range without external op-amp front end (vs Generic 12-bit SAR (e.g. AD7980))
- Two ADCs sample simultaneously rather than sequentially (vs Sequential-sampling dual ADC (e.g. multiplexed AD7992))
- Pin-compatible 14-bit upgrade path within the same family (vs AD7367BRUZ-5)
Design Notes
The AD7366BRUZ-5500RL7 uses two separate supply domains: AVDD (2.5 V nominal, 2.7 V to 5.5 V range) for analog core, and VLOGIC/VDRIVE (2.5 V or 3.3 V) for the digital interface, allowing direct connection to 3.3 V microcontrollers without level shifters. Place a 10 uF tantalum capacitor and 100 nF ceramic capacitor in parallel on each AVDD pin (the IC has two AVDD pins on the TSSOP-24 land pattern). The REGCAPA and REGCAPD pins require 1 uF ceramic capacitors to DGND for the internal charge-pump regulator; do not skip these or startup behavior will be unpredictable.
The TSSOP-24 board layout must keep AGND and DGND connected to a single low-impedance ground plane at one point (star ground at the AGND pins), per the Analog Devices AD7366/AD7367 datasheet. Place the AVCC and VDRIVE decoupling capacitors as close as physically possible (within 5 mm) to their respective supply pins to avoid logic-to-analog noise coupling during SCLK transitions. Analog input traces should be routed differentially with matched lengths to preserve CMRR at high slew rates; the on-chip track/hold has 30 MHz small-signal bandwidth that will happily accept 50 MHz noise if the layout is poorly shielded.
Common engineering pitfalls with this ADC family include: (1) Forgetting that the analog inputs include input clamps - the datasheet absolute maximum analog input is ±16.5 V and the input current must never exceed 20 mA even under fault, so design in a series resistor and TVS clamp if the transducer source can drive higher fault currents. (2) Trying to read the BUSY pin too quickly after CS goes low - the ADC needs full settling of the SDIN control register before conversion starts. (3) Mistaking the AD7366 for the AD7367 due to part-number similarity - same package but 12-bit vs 14-bit; confirm with the SDOUT ID register if there is any doubt.
Compliance Information
RoHS-compliant and lead-free per Analog Devices product page datasheet. Industrial grade only, no AEC-Q100 automotive qualification. Halogen-free status not stated in verified data and marked unknown.
