Analog Devices Inc. AD9240ASZRL

Overview

AD9240ASZRL from Analog Devices is a monolithic 14-bit, 10 MSPS analog-to-digital converter (ADC) with integrated sample-and-hold amplifier and programmable voltage reference. It operates on a single +5 V supply, delivers 77.5 dB SNR+D at 500 kHz input, exhibits ±0.6 LSB DNL, and supports differential or single-ended analog inputs up to 5 V_p-p. It is used in direct-IF downconversion receivers, medical imaging front-ends, and high-fidelity data acquisition systems.

For engineers reviewing the AD9240ASZRL datasheet, AD9240ASZRL pinout, AD9240ASZRL application, or AD9240ASZRL equivalent, this page provides verified technical context, real-world AC/DC performance boundaries, digital interface compatibility details (+3 V/+5 V CMOS), and validated alternative options for signal chain design continuity.

Technical Context

The AD9240ASZRL employs a four-stage differential pipelined architecture with digital error correction logic, enabling guaranteed no-missing-codes operation across –40°C to +85°C. Its internal SHA supports flexible input configurations-differential (VINA–VINB) or single-ended-with common-mode voltage adjustable from AVSS to AVDD and input spans selectable via VREF (1 V or 2.5 V).

Conversion timing is controlled by a single rising-edge-triggered clock; pipeline latency is fixed at three clock cycles. Digital outputs are straight binary, latched into configurable drivers supporting either +5 V or +3.3 V CMOS logic levels, with OTR flag indicating overflow conditions for MSB-aligned data handling.

Key Specifications

Pinout & Package

AD9240ASZRL is housed in a 44-lead MQFP (Metric Quad Flatpack) package with exposed thermal pad, θ_JA = 53.2°C/W. Pin 1 identifier located at top-left corner; pins 8–10, 26–27, 30, 34, 38, 40, 43–44 are NC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 14-bit, 10 MSPS ADC applications.

Compared with AD9240ASTZ, AD9240ASZRL offers superior thermal dissipation in dense layouts; compared with ADS8325IPFB, it delivers 100× higher throughput at the cost of 2-bit resolution - making it irreplaceable in real-time IF sampling where latency and bandwidth dominate.

Availability

AD9240ASZRL is available at Aetrix Electronics and suitable for direct-IF downconversion receivers, medical ultrasound beamformers, and industrial data acquisition modules requiring stable component supply, long-term lifecycle support, and guaranteed no-missing-codes performance.

Supply support for AD9240ASZRL 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 DSP ICs, serving precision instrumentation, communications, and industrial markets since 1965.

The AD9240ASZRL belongs to Analog Devices' high-speed pipeline ADC product line, designed specifically for applications demanding 10+ MSPS sampling with 12+ ENOB, low power, and integrated analog front-end functionality.

FAQ

What is the maximum input frequency the AD9240ASZRL can accurately digitize?

The AD9240ASZRL has a full-power bandwidth of 70 MHz and small-signal bandwidth of 70 MHz, enabling accurate digitization of input signals up to 45 MHz using undersampling techniques. At baseband, its Nyquist frequency is 5 MHz; SNR+D remains ≥75 dB up to 5 MHz with VREF = 2.5 V and f_IN = 5 MHz. Performance beyond 5 MHz relies on proper anti-aliasing filter design and clock jitter control below 4 ps rms.

Does the AD9240ASZRL require an external voltage reference?

No, the AD9240ASZRL includes an internal programmable voltage reference (1 V or 2.5 V) selectable via the SENSE pin. External reference is optional and used only when tighter dc accuracy or lower temperature drift than the internal reference provides is required. When using the internal reference, VREF pin serves as output; when using external reference, it becomes an input with 5 kΩ typical input resistance.

How does the BIAS pin affect the performance of the AD9240ASZRL?

The BIAS pin sets the AD9240ASZRL's conversion rate and power consumption via an external resistor (R_BIAS). With R_BIAS = 2 kΩ, it achieves full 10 MSPS operation at 285 mW. Increasing R_BIAS reduces both sample rate and power - e.g., 5 kΩ lowers max rate to ~7 MSPS and power to ~240 mW. All AC specifications (SFDR, SNR+D) scale accordingly, as shown in Figure 21 of the datasheet.

Can the AD9240ASZRL interface directly with a 3.3 V FPGA I/O bank?

Yes, the AD9240ASZRL's digital output drivers are configurable for +3.3 V CMOS logic. When DRVDD = 3.3 V, VOH ≥ 2.4 V (IOH = 50 µA) and VOL ≤ 0.7 V (IOL = 50 µA), meeting standard 3.3 V CMOS input thresholds. No level shifter is needed - simply tie DRVDD to the FPGA's 3.3 V supply and ensure DRVSS connects to the same ground plane.

What does the OTR (Out-of-Range) signal indicate, and how should it be used with the AD9240ASZRL?

The OTR signal from the AD9240ASZRL is an active-high flag indicating overflow - i.e., input voltage exceeded ±VREF. It is synchronized to the data output and must be sampled alongside BIT 1 (MSB). When OTR is high and BIT 1 = 1, the overflow is positive (input > +VREF); when OTR is high and BIT 1 = 0, it is negative (input < –VREF). This enables precise clipping detection without post-processing.