
Quick Answers: What Is the AD7606BSTZ-6RL and Is It Available?
The AD7606BSTZ-6RL is a 16-bit, 6-channel simultaneous sampling analog-to-digital data acquisition system (DAS) from Analog Devices. It integrates input clamp protection, a second-order antialiasing filter, track-and-hold amplifiers, a 16-bit SAR ADC, a flexible digital filter, a 2.5 V reference, and high-speed serial and parallel interfaces. Key verified specs include 200 kSPS throughput per channel, bipolar input ranges of ±10 V, ±5 V, and ±2.5 V, and operation from a single 5 V supply. As of 2026-08-23, the part is active with 99,999 units in stock at XAIPART, priced at $41.3636 for quantities of 1000+. This guide covers selection, design-in, alternatives, market position, and trends.
Technical Guide: How to Select and Design In the AD7606BSTZ-6RL
Understanding the Core Specifications
The AD7606BSTZ-6RL delivers 16-bit resolution with no missing codes, 6 simultaneous sampling channels, and a 200 kSPS throughput per channel. It accepts bipolar inputs of ±10 V, ±5 V, and ±2.5 V, selectable via the RANGE pin. The integrated second-order antialiasing filter provides -80 dB attenuation at the Nyquist frequency, simplifying external filtering. Input clamp protection handles overvoltage up to ±16.5 V, enhancing robustness in industrial environments.
Power Supply and Decoupling
The device operates from a single 5 V supply for both AVCC and DVCC. Place 10 µF and 0.1 µF decoupling capacitors close to each power pin. The VDRIVE pin sets the digital interface voltage, allowing connection to 2.3 V to 5 V logic. Ensure AGND and DGND are connected to a solid ground plane to minimize noise.
Reference Voltage Configuration
The internal 2.5 V reference is available on REFIN/REFOUT. For higher accuracy, you can overdrive this pin with an external reference. The REFCAP pin requires a 1 µF low-ESR capacitor to ground for stability. If using an external reference, ensure it can drive the REFIN/REFOUT pin's input impedance.
Analog Input Scaling
The AD7606BSTZ-6RL accepts bipolar inputs directly, eliminating the need for level shifting. For ±10 V range, connect voltage transformer outputs directly. For current sensors, use a burden resistor to convert current to voltage within the selected range. The high input impedance minimizes loading on the signal source.
Digital Interface Selection
Set the PAR/SER pin to choose parallel or serial mode. In parallel mode, use the 16-bit DB[15:0] bus with CS and RD signals. In serial mode, use SCLK and DOUT (via DB0) for SPI, QSPI, MICROWIRE, or DSP-compatible interfaces. The BUSY pin indicates conversion completion. For simultaneous sampling, assert CONVST A and CONVST B together to capture all channels at the same instant.
Digital Filter and Oversampling
The flexible digital filter can be configured via OS[2:0] pins to reduce noise and increase resolution. Oversampling ratios from 2x to 64x are available, trading throughput for improved SNR. For 50/60 Hz power monitoring, an oversampling ratio of 4x or higher can help reject line noise.
Layout Best Practices
Keep analog and digital grounds separate and connect them at a single point. Route analog inputs away from digital traces to avoid coupling. Place the reference capacitor close to REFCAP. Use a ground plane under the LQFP package to reduce parasitic inductance. Follow the layout guidelines in the datasheet for optimal performance.
Alternatives & Comparison: Drop-In Replacements and Variants
When selecting a replacement, consider the AD7606BSTZ-6 (same die, tray packaging) and AD7606BSTZ-4RL (4-channel version). The AD7606B is a newer generation with improved specs but may require firmware changes. The table below compares key specs from verified data.
| Parameter | AD7606BSTZ-6RL | AD7606BSTZ-6 | AD7606BSTZ-4RL | AD7606B |
|---|---|---|---|---|
| Resolution | 16 bit | 16 bit | 16 bit | [DATA_NEEDED: Resolution] |
| Channels | 6 | 6 | 4 | [DATA_NEEDED: Channels] |
| Sampling Rate | 200 kSPS | 200 kSPS | 200 kSPS | [DATA_NEEDED: Sampling Rate] |
| Input Voltage Range | ±10 V, ±5 V, ±2.5 V | ±10 V, ±5 V, ±2.5 V | ±10 V, ±5 V, ±2.5 V | [DATA_NEEDED: Input Voltage Range] |
| Interface | Parallel, Serial, SPI, QSPI, MICROWIRE, DSP | Parallel, Serial, SPI, QSPI, MICROWIRE, DSP | Parallel, Serial, SPI, QSPI, MICROWIRE, DSP | [DATA_NEEDED: Interface] |
| Supply Voltage | 5 V | 5 V | 5 V | [DATA_NEEDED: Supply Voltage] |
| Reference Voltage | 2.5 V internal | 2.5 V internal | 2.5 V internal | [DATA_NEEDED: Reference Voltage] |
| Antialiasing Filter | Second-order, -80 dB at Nyquist | Second-order, -80 dB at Nyquist | Second-order, -80 dB at Nyquist | [DATA_NEEDED: Antialiasing Filter] |
| Input Clamp Protection | ±16.5 V | ±16.5 V | ±16.5 V | [DATA_NEEDED: Input Clamp Protection] |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | [DATA_NEEDED: Operating Temperature] |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | [DATA_NEEDED: Package] |
| Packaging | Tape & Reel | Tray | Tape & Reel | [DATA_NEEDED: Packaging] |
Summary: The AD7606BSTZ-6 is a direct drop-in replacement with identical specs, differing only in packaging. The AD7606BSTZ-4RL offers fewer channels but is pin-compatible. The AD7606B is a newer generation but requires [VERIFY_NEEDED: firmware changes and pin compatibility].
Industry Insight: Market Position, Lifecycle, and Supply
The AD7606BSTZ-6RL is in an active lifecycle status, indicating ongoing production and manufacturer support. As of 2026-08-23, XAIPART holds 99,999 units in stock, ensuring immediate availability for most order quantities. The part is widely used in industrial applications, and its long lifecycle makes it a stable choice for designs requiring longevity. [DATA_NEEDED: Market share data] [DATA_NEEDED: Lead time from manufacturer]
Trends & Outlook: What Buyers Should Watch
With the push toward smarter grids and Industry 4.0, demand for simultaneous sampling ADCs like the AD7606BSTZ-6RL is expected to grow. The 6-channel configuration addresses three-phase power monitoring and multi-axis control needs. The 200 kSPS throughput and 16-bit resolution remain competitive for many industrial applications. Buyers should monitor the transition to newer generations like the AD7606B, which may offer improved performance but require design changes. The active lifecycle and ample stock suggest continued availability, but supply chain dynamics could affect lead times. [VERIFY_NEEDED: Future product roadmap]
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