AD7606 - 16-Bit 8CH Simultaneous Sampling DAS | Analog Devices
MPN: AD7606 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $17.5 | $17.50 |
| 10 | $15.9 | $159.00 |
| 100 | $14.25 | $1,425.00 |
| 500 | $13.1 | $6,550.00 |
| 1,000 | $11.95 | $11,950.00 |
AD7606 Overview
A data acquisition system (DAS) is an integrated circuit that combines signal conditioning, analog-to-digital conversion, and digital interface functions in one device. Within the converter hierarchy, the AD7606 belongs to the SAR (successive approximation register) ADC family, sits under analog-to-digital converters within the data converter / precision signal chain category, and functions as a complete power-management-friendly front end for industrial measurement systems.
Key features include eight simultaneously sampled inputs, a fully integrated analog front end with input clamp protection that tolerates up to ±16.5 V at the pins, an on-chip input buffer with a 1 MΩ analog input impedance regardless of sampling frequency, and flexible digital interfaces (parallel, serial SPI, QSPI, and MICROWIRE) with a VDRIVE pin operating from 2.3 V to 5 V for direct connection to low-voltage DSPs and microcontrollers.
Technically, the device employs a high-speed, low-power, charge-redistribution SAR ADC architecture with an on-chip antialiasing filter providing a 3 dB cutoff of 22 kHz and 40 dB antialias rejection when sampling at 200 kSPS. A pin-driven digital oversampling filter improves SNR and reduces signal bandwidth without host intervention. Single-supply 5 V operation plus bipolar input tolerance eliminates the need for external dual supplies, level shifters, or driver amplifiers.
Typical applications include industrial motor-control and power-line monitoring, three-phase inverter and grid-quality measurement, and medical or scientific multi-channel data acquisition where true bipolar sensors must be sampled simultaneously.
A key design consideration is that all eight channels share one 200 kSPS conversion cycle; the antialiasing filter bandwidth and oversampling ratio should be chosen together to balance noise against settling behavior at the input buffer.
This page synthesizes distributor pricing, verified drop-in alternatives such as the AD7606B and GX7606, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for AD7606 — 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 AD7606 (same form factor and footprint) — differing in Number of Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7606BSTZ
✅ Drop-In✓ In Stock
$16.9 / Unit
View Datasheet →AD7606BBSTZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD7606-6
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
AD7606-4
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
GX7606
✅ Drop-In📋 Reference alternative (not in catalog)
ADS8588S
✅ Drop-In📋 Reference alternative (not in catalog)
AD7606 Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Number of Channels | 8 (simultaneously sampled) |
| Throughput Rate | 200 kSPS (all channels) |
| Analog Input Ranges | ±10 V, ±5 V (true bipolar) |
| Input Clamp Protection | ±16.5 V tolerant |
| Analog Input Impedance | 1 MΩ (independent of sampling frequency) |
| Analog Supply | Single 5 V |
| VDRIVE (Digital Interface Supply) | 2.3 V to 5 V |
| Antialiasing Filter 3 dB Cutoff | 22 kHz |
| Antialias Rejection | 40 dB at 200 kSPS |
| Digital Interfaces | Parallel, SPI, QSPI, MICROWIRE |
| ADC Architecture | Charge redistribution SAR |
| Package | 64-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
AD7606 64-lqfp (10x10 mm) Pin Configuration Guide
Pin configuration for AD7606 (64-lqfp (10x10 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 AD7606.
Refer to the datasheet for full pin configuration.
Typical Applications
AD7606 is suitable for 6 applications: Industrial Motor Control Feedback, Power-Line Monitoring and Grid Quality, Medical and Laboratory Data Acquisition, Automated Test and Measurement Equipment, Sonar and Vibration Analysis, Renewable Energy Inverter Monitoring.
Industrial Motor Control Feedback
The AD7606 fits motor-drive feedback systems because its eight simultaneous 200 kSPS channels can capture three-phase currents and voltages plus DC-bus and temperature signals with zero skew - critical for instantaneous power calculations and torque-control loops. True bipolar ±10 V and ±5 V ranges accept standard industrial current-sense and resolver-front-end outputs directly from a single 5 V supply, and ±16.5 V clamp protection absorbs switching transients coupled into sense wiring. The 1 MΩ buffered input lets high-value dividers monitor the DC bus without loading errors. Place the AD7606 between isolated sensor conditioning and the DSP, using the parallel or QSPI interface at VDRIVE = 3.3 V for direct connection to 3.3 V microcontrollers.
Recommended
Power-Line Monitoring and Grid Quality
Grid-quality meters and protective relays benefit from the AD7606 because simultaneous sampling of all eight channels eliminates inter-channel phase error when computing real and reactive power across three phases (six voltage/current inputs plus reserve channels). The 22 kHz antialiasing filter with 40 dB rejection at 200 kSPS suppresses switching harmonics before conversion, while the pin-driven oversampling filter raises SNR for accurate THD measurement. Inputs tolerate ±16.5 V clamp events from line transients, and the ±10 V range directly accepts scaled PT/CT secondary outputs from a single 5 V supply. Read results over SPI into a protection MCU; oversampling ratios are selected by pins, so no firmware filter tuning is required during deployment.
Recommended
Medical and Laboratory Data Acquisition
Multi-channel physiological and laboratory instruments use the AD7606 because simultaneous 16-bit acquisition of eight bipolar channels (±5 V, ±10 V) preserves relative timing for signal-processing algorithms such as cross-correlation and impedance tomography. The integrated input buffer with a constant 1 MΩ impedance protects signal fidelity from high-impedance electrodes and transducer bridges, while the clamp protection up to ±16.5 V adds robustness against defibrillation-style test pulses and ESD-prone front panels. The single 5 V supply simplifies medically isolated power architecture: only one rail crosses the isolation barrier plus a low-voltage VDRIVE. Acquire at up to 200 kSPS per channel through SPI, engaging the digital oversampling filter to trade bandwidth for noise when sampling slow biopotentials.
Recommended
Automated Test and Measurement Equipment
Bench instruments and rack-mounted ATE rely on the AD7606 for deterministic, channel-aligned digitization: all eight SAR cores sample on the same CONVST edge, so waveform capture across multiple test points is skew-free - impossible with multiplexed ADCs. The 200 kSPS aggregate-per-channel rate with 16-bit resolution suits transient capture and power-supply characterization, and true bipolar inputs eliminate front-end level-shift circuitry, improving accuracy budgets. The parallel interface allows high-throughput burst reads into FPGA or DSP host logic at VDRIVE matched to the host I/O bank (2.3 V to 5 V). With antialias filtering and oversampling on-chip, the analog board needs only RC conditioning ahead of the pins, shrinking BOM area in dense instrument chassis.
Recommended
Sonar and Vibration Analysis
Acoustic arrays and machinery-vibration systems choose the AD7606 because phase relationships between hydrophones or accelerometers must be preserved for beamforming and modal analysis; simultaneous sampling guarantees it. The 200 kSPS per-channel rate comfortably covers audio-band and structural vibration spectra up to the 22 kHz filter bandwidth, and the digital oversampling filter improves SNR without adding external filter stages. The 1 MΩ buffered inputs interface piezo sensors through simple high-impedance bias networks, and the ±10 V/±5 V ranges accommodate high-dynamic-range conditioned outputs. Because conversion is SAR-based, latency is one cycle - useful in active sonar feedback loops. Host processors retrieve data via QSPI, and multiple AD7606 devices can share a common CONVST for array-wide synchronization.
Recommended
Renewable Energy Inverter Monitoring
Solar string inverters and wind converters deploy the AD7606 to monitor PV string voltages/currents and grid-side three-phase signals simultaneously, enabling maximum-power-point tracking and anti-islanding protection from one converter. The device tolerates ±16.5 V at its inputs against surge events and runs from the inverter's existing 5 V auxiliary rail, with bipolar ±10 V measurement ranges covering scaled sensor outputs without op-amp level translation. Simultaneous sampling ensures the power calculations used for grid synchronization (PLL support data) are phase-accurate. The QSPI interface connects directly to the inverter control DSP at 3.3 V VDRIVE, and the on-chip antialias filter rejects switching-node ripple coupling into sense lines, reducing measurement corruption from the power stage.
Recommended
Recommended Products Summary
Engineering reference data for AD7606 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7606B | AD7606BBSTZ | AD7606-6 | AD7606-4 | 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 | 64-LQFP (10x10 mm) - same (pin-to-pin) | 64-LQFP - same footprint class, verify pins |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | GXSC | Texas Instruments |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Channels | 8 simultaneous | 8 simultaneous | 8 simultaneous | 6 simultaneous | 4 simultaneous | 8 simultaneous | 8 simultaneous |
| Input Ranges | ±10 V, ±5 V | ±10 V, ±5 V | ±10 V, ±5 V | ±10 V, ±5 V | ±10 V, ±5 V | ±10 V, ±5 V (bipolar) | ±10 V, ±5 V |
| Drop-in Status | Baseline part | Documented drop-in (AN-1559) | Drop-in, higher performance grade | Same family, fewer channels | Same family, fewer channels | Advertised pin-to-pin compatible | Field-reported direct swap, verify timing |
| Key Advantage | Proven baseline, broad ecosystem | Higher impedance, extended temp range | 4x throughput (800 kSPS) | Lower cost, 6 channels | Lowest cost in family | Cost-optimized second source | Alternate supply chain (TI) |
Key Differentiators
- True bipolar ±10 V/±5 V inputs from a single 5 V supply (vs ADS8588S)
- Documented forward migration path (vs GX7606)
- Constant 1 MΩ input impedance across sampling rates (vs AD7606B)
Design Notes
The AD7606 runs its analog core from a single 5 V rail while REGCAP pins 36 and 39 are LDO regulator outputs (2.5 V to 2.7 V per AN-1559) that each require their specified external capacitor - do not load these pins externally or substitute a lower-ESR value than the datasheet specifies, or regulator stability and conversion accuracy suffer. Route the 5 V supply as a local plane with a bulk 10 uF plus 0.1 uF ceramic pair at each supply pin, and keep VDRIVE decoupling separate so digital bus switching noise does not couple into the analog supply domain.
Treat the analog inputs as high-impedance measurement nodes despite the internal 1 MΩ buffer: keep input traces short, guard them with ground, and route them away from the parallel data bus and CONVST/SCLK lines. Place the antialias filter RC (if added ahead of the 22 kHz on-chip filter) close to the AD7606 pins. The 64-LQFP thermal pad situation is conventional (no exposed pad), so a solid ground plane plus standard thermal vias near the leads is sufficient; rely on the datasheet theta-JA figures when estimating temperature rise in sealed enclosures.
Two recurring pitfalls: (1) When migrating to the AD7606B, note the REGCAP voltage changes from 2.5-2.7 V to 1.875-1.93 V (AN-1559) - any circuit sensing that node must be updated. (2) When substituting the ADS8588S, users on the TI E2E forum reported code-offset errors and slower system operation; verify the timing diagram with an oscilloscope and check code format conversion before committing to production. Also confirm the exact suffix ordering (AD7606BSTZ vs AD7606BBSTZ) on purchase orders since B-grade parts are distinct line items.
Compliance Information
Compliance data was not present in the provided web data; verify against the Analog Devices product page for the AD7606BSTZ ordering code.
