Analog Devices Inc. AD9480ASUZ-250

Overview

AD9480ASUZ-250 from Analog Devices is an 8-bit, 250 MSPS monolithic analog-to-digital converter optimized for high-speed instrumentation and communications systems. It operates from a single 3.3 V supply, delivers 47 dB SNR at 19.7 MHz input, features LVDS outputs compliant with ANSI 644, and includes an internal 1.0 V reference - enabling simplified system integration in digital oscilloscopes and point-to-point radios.

For engineers reviewing the AD9480ASUZ-250 datasheet, AD9480ASUZ-250 pinout, AD9480ASUZ-250 application, or AD9480ASUZ-250 equivalent, key selection considerations include its 250 MSPS sampling rate, ±0.26 LSB INL, 0.25 ps rms aperture jitter, LVDS output timing skew ≤0.6 ns, and TQFP-44 industrial temperature range (−40°C to +85°C).

Technical Context

The AD9480ASUZ-250 implements a 1.5-bit-per-stage pipeline ADC architecture with integrated track-and-hold and internal voltage reference. Its clock duty-cycle stabilizer locks to the rising edge of CLK± and maintains timing integrity across 100–250 MSPS, though it does not reduce input clock jitter.

Differential analog inputs support 1 V_p-p full-scale range with 750 MHz analog bandwidth and common-mode voltage centered at 1.9 V. LVDS outputs deliver D0–D7 in true/complement pairs with DCO±, all referenced to DRVDD and DRGND, and configurable for twos-complement or binary format via S1.

Key Specifications

Pinout & Package

AD9480ASUZ-250 is housed in a 44-lead TQFP (thin quad flat pack) surface-mount package, 10 mm × 10 mm × 1.4 mm, lead pitch 0.8 mm, specified for −40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed ADC applications.

Compared with AD9481ASTZ-250 and ADC12D1000RFIRHBT, AD9480ASUZ-250 offers optimal balance of speed, resolution, and power in compact TQFP packaging - ideal for cost-sensitive, space-constrained instrumentation where 8-bit fidelity suffices and parallel LVDS simplifies FPGA interface design.

Availability

AD9480ASUZ-250 is available at Aetrix Electronics and suitable for digital oscilloscopes, automated test equipment, and point-to-point radio systems requiring stable component supply across extended production lifecycles.

Supply support for AD9480ASUZ-250 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, headquartered in Norwood, MA.

The AD9480ASUZ-250 belongs to Analog Devices' high-speed ADC product line, designed specifically for instrumentation, communications, and test equipment demanding low-power, high-fidelity digitization at 200+ MSPS rates.

FAQ

What is the maximum sampling rate supported by the AD9480ASUZ-250?

The AD9480ASUZ-250 supports a maximum conversion rate of 250 MSPS, as confirmed in Table 4 of the Rev. A datasheet. This rate is fully characterized across the industrial temperature range (−40°C to +85°C) with guaranteed AC performance including 45 dB SINAD at 170 MHz input frequency. Operation above 250 MSPS is not specified and may result in degraded linearity or missing codes.

Does the AD9480ASUZ-250 require an external voltage reference?

No, the AD9480ASUZ-250 includes an internal 1.0 V reference with ±0.025 mV/°C drift, eliminating the need for an external reference in most applications. When SENSE is tied to AGND, the internal reference is enabled; VREF pin becomes an output. External reference mode is optional and requires SENSE = AVDD, but is not required for standard operation of AD9480ASUZ-250.

What package type and pin count does the AD9480ASUZ-250 use?

The AD9480ASUZ-250 uses a 44-lead TQFP (thin quad flat pack) package, 10 mm × 10 mm body, 0.8 mm lead pitch, with exposed pad for thermal dissipation. Pin configuration is documented in Figure 3 and Table 7 of the Rev. A datasheet, including dedicated LVDS data (D0_T/D0_C through D7_T/D7_C), DCO±, CLK±, and control pins PDWN and S1.

How does the clock duty-cycle stabilizer function in the AD9480ASUZ-250?

The AD9480ASUZ-250's internal clock duty-cycle stabilizer locks to the rising edge of CLK± and optimizes internal timing for sample rates between 100 MSPS and 250 MSPS. It tolerates wide input duty cycles but does not reduce clock jitter. The feature is enabled by default and can be disabled via the S1 pin, as detailed in the Clocking section (Page 16) of the Rev. A datasheet.

What is the power consumption of the AD9480ASUZ-250 during active operation and power-down mode?

The AD9480ASUZ-250 consumes 590 mW at 250 MSPS with a dc analog input and static outputs, as measured in Table 1. In power-down mode (PDWN = AVDD), total dissipation drops to 15 mW - a 39× reduction - making it suitable for battery-powered or thermally constrained instrumentation where intermittent acquisition is used.