AD7606BSTZ-4RL - 4Ch 16-Bit 200kSPS ADC DAS | Analog Devices
MPN: AD7606BSTZ-4RL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $13.1 | $131.00 |
| 100 | $11.8 | $1,180.00 |
| 500 | $10.6 | $5,300.00 |
| 1,000 | $9.55 | $9,550.00 |
AD7606BSTZ-4RL Overview
A data acquisition system (DAS) is a complete signal chain that conditions, samples, and converts analog signals into digital data for processing. The AD7606BSTZ-4RL belongs to the family of simultaneous sampling ADCs, which capture multiple channels at the exact same instant, preserving phase relationships critical for applications like three-phase power analysis. As a DAS, it integrates front-end protection, filtering, and conversion, reducing external component count versus discrete ADC implementations.
Key features include 16-bit resolution with 200 kSPS throughput on all channels, 95.5 dB SNR, and a flexible digital filter that improves noise performance. The device offers parallel, serial SPI, QSPI, MICROWIRE, and DSP-compatible interface options. The on-chip 2.5V reference and buffer eliminate external reference components, while the 1 MΩ analog input impedance simplifies driver design.
Technically, the AD7606BSTZ-4RL uses a successive approximation register (SAR) architecture with charge redistribution, achieving high accuracy and low power. The integrated second-order antialiasing filter simplifies external filtering, and input clamp protection handles overvoltage up to ±16.5V. The device operates over the industrial temperature range of -40°C to +85°C.
Typical applications include power line monitoring, motor control, industrial automation, and test and measurement equipment. Its simultaneous sampling capability is essential for accurate phase measurement in polyphase power systems, while high input impedance and integrated protection make it robust for direct sensor interfacing.
When designing with this device, ensure proper decoupling of AVCC and VDRIVE supplies, and tune the digital filter settings to balance noise versus throughput. Careful PCB layout is needed to minimize digital noise coupling into the analog inputs.
Drop-in alternatives for AD7606BSTZ-4RL — 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 AD7606BSTZ-4RL (same form factor and footprint) — differing in Number of Channels, Input Type, Input Voltage Range, Antialiasing Filter, Sampling Rate.
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View Datasheet →AD7606BSTZ-4RL Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Number of Channels | 4 (simultaneous sampling) |
| Throughput Rate | 200 kSPS per channel |
| SNR | 95.5 dB |
| Input Ranges | ±10 V, ±5 V (true bipolar) |
| Analog Supply | 5 V single (AVCC) |
| Interface Supply (VDRIVE) | 2.3 V to 5 V |
| Input Impedance | 1 MΩ |
| On-chip Reference | 2.5 V with buffer |
| Overvoltage Protection | ±16.5 V input clamp |
| Architecture | SAR, charge redistribution |
| Digital Interfaces | Parallel, SPI, QSPI, MICROWIRE, DSP serial |
| Antialiasing Filter | Second-order on-chip |
| Operating Temperature | -40°C to +85°C |
| Package | 64-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD7606BSTZ-4RL Pin Configuration
| Pin 1 | V1A — Analog input 1, Range A (±10V/±5V) |
| Pin 2 | V1B — Analog input 1, Range B (±10V/±5V) |
| Pin 9 | V4A — Analog input 4, Range A |
| Pin 10 | V4B — Analog input 4, Range B |
| Pin 31 | VDRIVE — Digital interface supply, 2.3V to 5V |
| Pin 33 | AGND — Analog ground |
| Pin 34 | AVCC — 5V analog supply |
| Pin 40 | REFSELECT — Internal/external reference select |
| Pin 43 | REFIN/OUT — 2.5V reference input/output with buffer |
| Pin 47 | BUSY — Conversion in progress indicator |
| Pin 48 | CS — Chip select |
| Pin 49 | RD/SCLK — Read / serial clock |
| Pin 50 | WR/DIN — Convert start / serial data in |
| Pin 52 | FRSTDATA — First data frame indicator (serial mode) |
| Pin 53 | DB0/DOUTA — Parallel data bit 0 / serial data out A |
| Pin 60 | DB7/DOUTB — Parallel data bit 7 / serial data out B |
| Pin 64 | STBY — Standby control |
Typical Applications
AD7606BSTZ-4RL is suitable for 6 applications: Three-Phase Power Line Monitoring, Motor Control and Inverter Feedback, Industrial Automation and PLC Analog Input Modules, Test and Measurement Instruments, Protective Relays and Grid Monitoring, Medical and Biomedical Data Acquisition.
Three-Phase Power Line Monitoring
The AD7606BSTZ-4RL fits three-phase power monitoring because its 4 simultaneous sampling channels capture all phase voltages at the identical instant, preserving phase information essential for accurate active, reactive, and apparent power calculations. The 16-bit resolution and 95.5 dB SNR support sub-0.1% measurement accuracy, while the ±10V bipolar input range with 1 MΩ impedance connects directly to buffered voltage dividers. Placed after isolation and scaling front-ends, the second-order antialiasing filter rejects switching harmonics; oversampling further improves noise performance for IEC-class metering.
Recommended
Motor Control and Inverter Feedback
In motor drives, the AD7606BSTZ-4RL digitizes phase currents and DC bus voltage simultaneously, giving the DSP a coherent snapshot for field-oriented control (FOC) feedback loops. The 200 kSPS per-channel throughput exceeds typical 10-20 kHz PWM control loop demands, and the input clamp protection tolerates ±16.5V transients from inverter switching. The parallel or SPI interface connects directly to TI C2000-class MCUs; the BUSY and FRSTDATA signals simplify deterministic sampling synchronization with PWM carriers.
Recommended
Industrial Automation and PLC Analog Input Modules
PLC analog input cards benefit from the AD7606BSTZ-4RL's integration: clamp protection, antialiasing filter, track-and-hold, ADC, reference, and buffer in one LQFP-64 shrink board area and BOM count versus discrete solutions. The industrial -40°C to +85°C rating and 5V single-supply operation suit DIN-rail modules, while VDRIVE flexibility (2.3V-5V) interfaces with 3.3V or 5V logic. The ±10V input range directly accepts standard industrial signal levels after simple conditioning, and oversampling yields the high resolution required for transducer accuracy.
Recommended
Test and Measurement Instruments
Bench and portable instruments use the AD7606BSTZ-4RL where multiple signals must be sampled coherently - for example, multi-channel data loggers and power quality analyzers. The 200 kSPS simultaneous sampling eliminates skew errors between channels that multiplexed ADCs introduce, which is critical for phase-sensitive measurements. The flexible digital filter lets users trade bandwidth for resolution via register settings, and the SPI/QSPI/MICROWIRE interfaces integrate easily with FPGA or MCU host controllers in compact instrument front ends.
Recommended
Protective Relays and Grid Monitoring
Protective relays demand simultaneous sampling of voltage and current channels to compute impedance and fault phasors with zero inter-channel delay; the AD7606BSTZ-4RL's track-and-hold architecture guarantees this coherency. The ±10V true bipolar range matches standard relay AC inputs, and the integrated clamp protection withstands surge conditions on the secondary of voltage transformers. With 95.5 dB SNR, it resolves small fault signatures against full-scale signals, supporting sensitive ground-fault detection in substation automation equipment.
Recommended
Medical and Biomedical Data Acquisition
Multi-channel physiological monitoring equipment uses the AD7606BSTZ-4RL where bipolar sensor signals around ground must be digitized coherently - for example, impedance plethysmography and multi-sensor diagnostic nodes. The true bipolar ±5V/±10V inputs accept ground-referenced signals without level shifting, and 1 MΩ input impedance minimizes loading of high-impedance electrodes. Oversampling mode raises effective resolution beyond 16 bits for small-signal channels, while the single 5V supply eases battery-powered and isolated medical power architectures.
Recommended
Recommended Products Summary
Engineering reference data for AD7606BSTZ-4RL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7606BSTZ-4 | AD7606BSTZ | AD7606BSTZ-6RL | AD7606B |
|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Channels | 4 (simultaneous) | 4 (simultaneous) | 8 (simultaneous) | 6 (simultaneous) | 4 (simultaneous) |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Throughput Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 800 kSPS (enhanced) |
| Input Impedance | 1 MΩ | 1 MΩ | 1 MΩ | 1 MΩ | 1 MΩ in all modes |
| 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 +125°C |
Key Differentiators
- True simultaneous sampling with integrated front end (vs AD7606BSTZ)
- Industrial temperature range at lower cost (vs AD7606B)
- Fully integrated 2.5V reference and buffer (vs Discrete SAR ADC solutions)
Design Notes
Power the AD7606BSTZ-4RL from a clean single 5V AVCC rail and a separate VDRIVE rail (2.3V-5V). Decouple AVCC with 10uF tantalum plus 0.1uF ceramic at each supply pin, placed within 5 mm of the package. Do not share AVCC with switching regulator rails without post-filtering; the 95.5 dB SNR degrades measurably with >10 mV ripple on the analog supply. A low-noise LDO is recommended for the analog rail.
Use a solid analog ground plane under the LQFP-64 and keep digital return currents (SPI/parallel bus, VDRIVE domain) away from analog input traces. Route the four V1-V4 input pairs as short as possible; the second-order antialiasing filter is on-chip, so no external filter components are needed, but long traces pick up crosstalk between channels. Separate AGND and OGND planes joined at a single point per the ADI datasheet layout recommendation.
In serial mode, remember FRSTDATA marks the first channel's data frame - ignoring it causes channel-swapping bugs. The oversampling setting trades throughput for noise: verify your control loop timing at the chosen OSR. Input clamp protection tolerates ±16.5V but is not a substitute for proper front-end protection in surge-prone grid applications; add series resistance and TVS for IEC surge compliance.
Compliance Information
RoHS compliant per Analog Devices Z-suffix nomenclature and distributor listings. REACH and halogen-free status require confirmation via ADI product page environmental data.
