AD7606 16-Bit 8-Channel 200kSPS Simultaneous Sampling DAS | Analog Devices
MPN: AD7606BSTZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.6 | $18.60 |
| 10 | $17.12 | $171.20 |
| 100 | $15.6 | $1,560.00 |
| 500 | $14.44 | $7,220.00 |
| 1,000 | $13.25 | $13,250.00 |
AD7606BSTZ Overview
A data acquisition system (DAS) is an integrated circuit that converts real-world analog signals into digital data for processing by a microcontroller, DSP, or FPGA. Within the signal-chain hierarchy, a DAS sits above a bare ADC: it integrates the converter plus input buffers, antialiasing filters, a voltage reference, and clamp protection, replacing multiple discrete components on the analog front-end board.
Key features include 8 simultaneously sampled inputs (no channel-to-channel skew), true bipolar +/-10 V and +/-5 V input ranges, and an on-chip input clamp protection circuit that tolerates up to +/-16.5 V overvoltage. A 1 M Ohm analog input impedance is maintained regardless of sampling frequency, simplifying sensor interfacing.
Architecturally, the AD7606 employs a charge-redistribution SAR ADC with per-channel input buffers and second-order antialiasing filters (3 dB cutoff at 22 kHz, 40 dB rejection at 200 kSPS). A pin-driven flexible digital filter improves SNR and narrows the 3 dB bandwidth when required. Digital interfacing supports parallel, serial SPI, QSPI, and MICROWIRE protocols, with VDRIVE logic supply from 2.3 V to 5 V for direct connection to 3.3 V or 5 V processors.
Typical applications include power line monitoring and protection relays, motor control feedback, industrial programmable logic controllers, and precision instrumentation where all eight channels must be captured at the same instant.
Design tip: drive the analog inputs differentially where possible and reference the STBY and RESET pins correctly during power-up to guarantee deterministic channel synchronization.
This page synthesizes distributor data, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for AD7606BSTZ β 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 (same form factor and footprint) β differing in Number of Channels, Package, Sampling Rate.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD7606BSTZ
β Drop-Inβ In Stock
$16.9 / Unit
View Datasheet βAD7606BBSTZ
β Drop-Inπ Reference alternative (not in catalog)
AD7606-6
β Drop-Inπ Reference alternative (not in catalog)
AD7606-4
β Drop-Inπ Reference alternative (not in catalog)
GX7606
β Drop-Inπ Reference alternative (not in catalog)
ADS8588S
β Drop-Inπ Reference alternative (not in catalog)
AD7606BSTZ Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Number of Channels | 8 simultaneously sampled |
| Sampling Rate | 200 kSPS (all channels) |
| Analog Input Ranges | +/-10 V, +/-5 V true bipolar |
| Input Overvoltage Clamp Protection | +/-16.5 V |
| Analog Input Impedance | 1 MOhm (independent of sampling frequency) |
| Analog Supply | Single 5 V (AVCC) |
| Logic Supply (VDRIVE) | 2.3 V to 5 V |
| Antialiasing Filter 3 dB Cutoff | 22 kHz |
| Antialias Rejection | 40 dB at 200 kSPS |
| Digital Interface | Parallel, SPI, QSPI, MICROWIRE |
| ADC Architecture | Charge redistribution SAR |
| Package | 64-lead LQFP, 10 x 10 mm |
| Mounting Type | Surface Mount |
AD7606BSTZ 64-lead lqfp, 10 x 10 mm Pin Configuration Guide
Pin configuration for AD7606BSTZ (64-lead lqfp, 10 x 10 mm package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for AD7606BSTZ.
Refer to the datasheet for full pin configuration.
Typical Applications
AD7606BSTZ is suitable for 6 applications: Power Line Monitoring and Protection Relays, Motor Control and Drive Feedback, Industrial PLC and Data Acquisition Modules, Power Quality Analyzers and Energy Meters, Solar Inverter and Renewable Energy Conversion, Medical and Laboratory Instrumentation.
Power Line Monitoring and Protection Relays
The AD7606 fits power line monitoring because its eight simultaneously sampled inputs capture three-phase voltage and current channels with zero channel-to-channel skew, a hard requirement for accurate phasor and power-flow calculations. The true bipolar +/-10 V and +/-5 V ranges map directly to standard transducer and CT/PT secondary outputs, while the +/-16.5 V input clamp tolerates fault transients without external protection diodes. Sampling at up to 200 kSPS per channel exceeds the resolution needed for harmonics analysis and relay trip decisions. Placed between the transducer front-end and the protection microprocessor via SPI or parallel bus, it removes the discrete buffer, filter, and reference components a bare SAR ADC would require, cutting board area and calibration effort in protection relay and power quality analyzer designs.
Recommended
Motor Control and Drive Feedback
In motor drives, the AD7606 digitizes phase currents, DC bus voltage, and position sensor signals simultaneously, so the control loop sees one consistent snapshot of the machine state each PWM cycle. The 200 kSPS per-channel throughput supports current-loop bandwidths well above typical 10-20 kHz inverter switching rates, and the integrated second-order antialiasing filters (22 kHz, 40 dB rejection at 200 kSPS) suppress PWM ripple before conversion. The 1 MOhm buffered inputs connect to shunt amplifier outputs without loading errors. Because VDRIVE accepts 2.3 V to 5 V, the AD7606 interfaces directly to 3.3 V DSPs and FPGAs running the control algorithm. The input clamp also protects the ADC during shoot-through and fault events, reducing board-level protection complexity in industrial drive front-ends.
Recommended
Industrial PLC and Data Acquisition Modules
Programmable logic controller analog input modules standardize on bipolar +/-10 V signals, exactly the native ranges of the AD7606. A single 64-LQFP device replaces eight multiplexed ADC channels with true simultaneous sampling, letting PLC firmware correlate all field signals to the same timestamp - important for interlock and event-sequence logic. The 1 MOhm input impedance accepts transducer outputs directly, and the internal clamp covers industrial wiring fault conditions up to +/-16.5 V. Multiple modules can share one 5 V analog rail while VDRIVE adapts to the module's 3.3 V or 5 V processor bus. The pin-driven digital filter lets the same hardware trade bandwidth for higher SNR, so one module design covers both fast event capture and slow high-accuracy process monitoring without redesign.
Recommended
Power Quality Analyzers and Energy Meters
Power quality analyzers need harmonics measurement to the 40th-50th order on all three phases plus neutral, demanding six to eight synchronized bipolar channels - precisely the AD7606's channel set. The 22 kHz antialiasing filter passband and 200 kSPS sampling comfortably cover these harmonic orders, and because all channels convert simultaneously, phase-angle and power-factor calculations carry no multiplexer skew error. The 1 MOhm inputs connect to voltage divider networks without gain drift from input loading. Its integrated reference and buffers reduce calibration points versus discrete front-ends, and the +/-16.5 V clamp survives meter tampering and surge events. For revenue-grade deployments, the pin-compatible AD7606B extends temperature range while preserving firmware investment.
Recommended
Solar Inverter and Renewable Energy Conversion
Grid-tied solar inverters must sense PV string voltages, grid phase voltages, and inverter output currents synchronously for MPPT, anti-islanding, and grid synchronization control. The AD7606 provides this multi-channel synchronized capture with true bipolar ranges matching the isolation-amplifier outputs commonly used on the high-voltage side. Sampling at 200 kSPS supports grid-frequency PLL locking and rapid fault ride-through decisions, while the integrated antialiasing filters reject switching-frequency residue from the power stage. The 5 V single analog supply simplifies isolated bias architecture, and VDRIVE of 2.3 V to 5 V connects directly to the inverter's 3.3 V controller. Input clamp protection to +/-16.5 V guards against grid transients reflected through the sensing network, improving field reliability.
Recommended
Medical and Laboratory Instrumentation
Patient monitors, EEG/ECG front-ends, and laboratory analyzers benefit from the AD7606's eight simultaneous bipolar channels when digitizing multi-lead biopotential or multi-sensor arrays where timing correlation between channels affects measurement validity. The high 1 MOhm input impedance minimizes loading of high-impedance electrode and transducer sources, and the on-chip filters reduce out-of-band noise before conversion, easing downstream digital filtering. Single 5 V operation with low integrated noise supports battery-powered portable instruments. Because the device integrates buffers, reference, and protection in the 64-LQFP, multi-channel medical designs achieve compact, low-component-count analog front-ends. Designers should observe the datasheet's grounding and layout guidance to keep the low-noise analog domain separated from digital section switching currents.
Recommended
Recommended Products Summary
Engineering reference data for AD7606BSTZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7606B | AD7606BBSTZ | AD7606-6 | GX7606 | ADS8588S |
|---|---|---|---|---|---|---|
| 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 footprint | 64-LQFP (10x10 mm) - same package family |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | GXSC | Texas Instruments |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Channels | 8 simultaneous | 8 simultaneous | 8 simultaneous | 6 simultaneous | 8 simultaneous | 8 simultaneous |
| Max Throughput | 200 kSPS | Higher than AD7606 (see ADI AN-1559) | 800 kSPS | 200 kSPS | 200 kSPS | 200 kSPS |
| Drop-in Status | Reference part | Yes - pin and software compatible (AN-1559) | Yes - AD7606B family variant | Yes - same datasheet family | Yes - vendor-claimed pin-to-pin | Partial - board timing must be verified |
Key Differentiators
- 8 truly simultaneous bipolar inputs (vs ADS8588S)
- Fully integrated analog front-end (vs AD7606-6)
- Cost-optimized domestic sourcing path (vs GX7606)
Design Notes
Partition the board into analog and digital ground regions and join them at a single point under the AD7606. Place the 5 V analog supply decoupling (100 nF ceramic plus bulk capacitance) directly at AVCC pins, and repeat local decoupling at the VDRIVE pins for the interface supply. Keep the SAR converter's dynamic switched-capacitor currents away from sensitive input routing; since the AD7606 integrates input buffers, input traces can be relatively long, but still route bipolar input pairs as short, matched traces away from digital lines.
Power AVCC from a clean 5 V rail; noise on this supply converts directly into aperture jitter and offset error on a SAR front-end. VDRIVE (2.3 V to 5 V) can share the processor I/O rail, but add local decoupling so serial bus switching does not modulate the digital ground reference. Do not load the internal REGCAP pins externally beyond datasheet recommendations - per AN-1559 these sit at 2.5 V to 2.7 V on the AD7606 and serve internal LDO regulation, and external loading disturbs converter accuracy.
The +/-16.5 V input clamp is a fault-tolerance feature, not a continuous operating range - sustained operation near the clamp level degrades accuracy and reliability; size front-end gain so signals stay within the selected +/-10 V or +/-5 V range. Another frequent pitfall is migrating boards to the AD7606B without checking REGCAP voltage expectations: the successor's LDO outputs 1.875 V to 1.93 V instead of 2.5 V to 2.7 V, so any board-level diagnostic that monitors REGCAP must be updated (per ADI AN-1559). Finally, honor CONVST timing to preserve simultaneous sampling across all eight channels.
Compliance Information
Compliance status was not present in the retrieved web data; consult the Analog Devices product page for current RoHS/REACH declarations. The B-suffix (BBSTZ) grade is positioned for higher-reliability use.
