Analog Devices Inc. AD7910AKSZ-500RL7

Overview

AD7910AKSZ-500RL7 from Analog Devices is a 10-bit, 250 kSPS successive approximation ADC in a 6-lead SC70 package, operating from a single 2.35 V to 5.25 V supply. It features 71 dB SNR at 100 kHz input, 3.6 mW typical power at 3 V/250 kSPS, and internal VDD-referenced conversion with 0 V to VDD analog input range. It serves as a compact, low-power data acquisition front-end in portable medical sensors and battery-powered instrumentation.

For engineers reviewing the AD7910AKSZ-500RL7 datasheet, AD7910AKSZ-500RL7 pinout, AD7910AKSZ-500RL7 application, or AD7910AKSZ-500RL7 equivalent, key selection considerations include its SC70 footprint, 10-bit resolution with ±0.5 LSB INL/DNL, SPI-compatible serial interface, 250 ns track-and-hold acquisition time, and guaranteed no-missed-codes performance across −40°C to +85°C.

Technical Context

The AD7910AKSZ-500RL7 implements a charge redistribution SAR architecture with an integrated track-and-hold amplifier capable of >13 MHz full-power bandwidth. Conversion is initiated on the falling edge of CS and synchronized entirely to the external SCLK, requiring 14 clock cycles for completion - eliminating pipeline delay and enabling precise sampling control.

Its reference is derived directly from VDD, establishing a ratiometric 0 V to VDD input range without external reference components. Digital interface signals (CS, SCLK, SDATA) are compatible with SPI, QSPI, MICROWIRE, and DSP controllers, supporting flexible clock speed management and 1 μA max standby current.

Key Specifications

Pinout & Package

AD7910AKSZ-500RL7 is housed in a 6-lead SC70 package (2.0 mm × 1.25 mm × 0.9 mm), optimized for space-constrained PCB layouts in handheld and wearable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit SAR ADC applications.

Compared with ADS7822U and MAX11100ETE+, AD7910AKSZ-500RL7 offers optimal balance of SC70 size, 2.35–5.25 V flexibility, and 250 kSPS throughput - making it uniquely suited for space- and supply-voltage-constrained portable instrumentation where 10-bit fidelity suffices.

Availability

AD7910AKSZ-500RL7 is available at Aetrix Electronics and suitable for battery-powered systems, portable medical instruments, and industrial handheld testers requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for AD7910AKSZ-500RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD7910AKSZ-500RL7 belongs to Analog Devices' precision SAR ADC product line, engineered specifically for low-power, small-footprint data acquisition in portable and energy-sensitive applications - emphasizing integration, supply flexibility, and guaranteed performance across temperature.

FAQ

What is the maximum sampling rate supported by the AD7910AKSZ-500RL7?

The AD7910AKSZ-500RL7 supports a maximum throughput rate of 250 kSPS, achieved with a 5 MHz SCLK. Its 14-cycle conversion time (2.8 μs max) and lack of pipeline delay ensure deterministic timing - critical for synchronized multi-channel sampling or real-time control loops where jitter must be minimized.

Does the AD7910AKSZ-500RL7 require an external voltage reference?

No, the AD7910AKSZ-500RL7 uses an internal VDD-derived reference, establishing a ratiometric 0 V to VDD analog input range. This eliminates external reference components, reduces BOM count, and maintains measurement accuracy proportional to supply voltage - ideal for battery-operated systems where VDD varies during discharge.

What package type is used for the AD7910AKSZ-500RL7?

The AD7910AKSZ-500RL7 is packaged in a 6-lead SC70 (2.0 mm × 1.25 mm × 0.9 mm), offering significant space savings over MSOP or SOIC alternatives. Its thermal impedance (θJA = 340.2°C/W) is optimized for low-power operation in thermally constrained environments like wearable enclosures.

How does the AD7910AKSZ-500RL7 manage power in low-duty-cycle applications?

The AD7910AKSZ-500RL7 supports full power-down mode with ≤1 μA max current draw. When paired with an MCU-controlled CS signal, it can remain in standby between conversions - reducing average power in burst-sampling systems (e.g., environmental loggers) to nanowatt-level averages without sacrificing wake-up latency.

Is the AD7910AKSZ-500RL7 compatible with standard SPI interfaces?

Yes, the AD7910AKSZ-500RL7 features an SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface. SDATA is output-only, clocked on the falling edge of SCLK, with CS framing each conversion. Its 14-bit frame format (4 leading zeros + 10-bit result + 2 trailing zeros) aligns with standard SPI master configurations on platforms including ARM Cortex-M and TI C2000.