AD7616BSTZ-RL

AD7616 is a fully integrated 16-channel data acquisition system built around dual 16-bit SAR analog-to-digital converters with simultaneous sampling capability. BSTZ refers to industrial temperature specification and 80-pin LQFP surface mount housing sized 14mm × 14mm. RL denotes continuous long-length lead-free tape-and-reel packaging dedicated to uninterrupted automated SMT mass production.

This complete multi-channel analog front-end integrates nearly all peripheral signal conditioning circuits required for industrial data acquisition inside a single chip. Two independent SAR ADC cores work in parallel to realize simultaneous sampling across all 16 analog input channels, delivering a maximum throughput of 1 MSPS for each channel pair.

The device runs on a single 5V analog supply ranging from 4.75V to 5.25V, while the digital interface section is powered separately by 2.3V to 3.6V adjustable logic voltage to match the IO level of mainstream MCU and FPGA chips. Three true bipolar input ranges can be configured independently for each channel group: ±2.5V, ±5V and ±10V, adapting to various industrial sensor output signals.

Built-in protective clamp circuits withstand transient input voltages up to ±21V, effectively blocking surge interference from industrial field wiring. The analog input terminal maintains a fixed 1MΩ high input impedance regardless of sampling frequency, eliminating the need for external buffer operational amplifiers. An integrated first-order anti-aliasing filter suppresses high-frequency noise before analog-to-digital conversion to prevent signal aliasing distortion.

A precision 2.5V bandgap voltage reference together with dedicated reference buffer is embedded on chip, delivering stable conversion benchmarks without external reference components. Under default sampling mode, signal-to-noise ratio reaches 90.5 dB; the built-in oversampling digital filter can lift SNR up to 92 dB for higher measurement precision. Total harmonic distortion is controlled below -103 dB, with integral non-linearity within ±1 LSB to guarantee outstanding linear conversion accuracy.

Users can configure operating modes either through hardware pin strapping or serial register programming. Multiple communication options are available, including SPI, QSPI, DSP compatible serial bus and high-speed parallel digital interface. Optional CRC data verification function is supported to enhance data transmission reliability in harsh electromagnetic environments. A flexible channel sequencer and burst reading mode improve continuous sampling efficiency for periodic signal acquisition tasks.

Encapsulated in standard 80-pin plastic LQFP package with regular pin arrangement, convenient for PCB routing in industrial control mainboards and multi-channel acquisition modules. Moisture Sensitivity Level is MSL3; all reflow soldering operations must be finished within 168 hours after the original vacuum sealed package is opened. Long continuous tape reel packaging ensures stable feeding for automatic placement equipment during large-scale electronic manufacturing.

The operating temperature range covers -40°C to +125°C, enabling stable long-term operation under extreme temperature and strong electromagnetic interference conditions in industrial sites, power facilities and field measurement equipment. Manufactured with full lead-free processes, the component complies with RoHS 3 global environmental directives. High-level single-chip integration drastically reduces the quantity of discrete peripheral components, greatly simplifying the hardware design of multi-channel synchronous data acquisition systems.

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