Analog Devices Inc. AD9288BSTZ-80

Overview

AD9288BSTZ-80 from Analog Devices is a dual 8-bit, 80 MSPS analog-to-digital converter with on-chip track-and-hold, internal 1.25 V reference, and 475 MHz analog bandwidth per channel. It operates from a single 3.0 V supply (2.7–3.6 V), delivers 47 dB SNR at 41 MHz input, and supports independent channel operation in battery-powered scopemeters and I/Q communications receivers.

For engineers reviewing the AD9288BSTZ-80 datasheet, AD9288BSTZ-80 pinout, AD9288BSTZ-80 application, or AD9288BSTZ-80 equivalent, key selection considerations include its dual-channel 80 MSPS sampling rate, TTL/CMOS-compatible digital outputs, user-selectable offset binary/twos complement data format, standby mode for single-channel power reduction, and pin compatibility with the AD9218 for system scalability.

Technical Context

The AD9288BSTZ-80 implements a bit-per-stage pipeline ADC architecture with differential input buffers, internal reference generation, and four-stage pipeline latency. Each channel features independent encode inputs (ENCA/ENCB), programmable data alignment via S1/S2 pins, and configurable output drive from 2.5–3.6 V supplies.

It supports three operational modes: normal dual-channel, standby for Channel B only, or full standby for both channels - all controlled by logic levels on S1 and S2 pins. The device uses switch-capacitor techniques with built-in error correction and delivers latched digital outputs synchronized to the rising edge of the encode clock.

Key Specifications

Pinout & Package

AD9288BSTZ-80 is housed in a 48-lead LQFP package (7 mm × 7 mm, 1.4 mm height) rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel ADC applications.

Compared with AD9288BSTZ-100, the AD9288BSTZ-80 trades 20 MSPS headroom for lower power and cost, while AD9218BSTZ-100 provides 2 additional bits of resolution at the expense of higher noise floor and no 80 MSPS variant - making AD9288BSTZ-80 optimal for cost-sensitive, thermally constrained dual-channel acquisition.

Availability

AD9288BSTZ-80 is available at Aetrix Electronics and suitable for battery-powered instruments, handheld scopemeters, and I/Q communications receivers requiring stable component supply with guaranteed industrial temperature operation.

Supply support for AD9288BSTZ-80 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 AD9288 belongs to Analog Devices' high-speed data converter product line, designed specifically for portable and cost-sensitive instrumentation requiring dual-channel, low-power, easy-to-integrate ADC functionality.

FAQ

What is the maximum analog input frequency supported by the AD9288BSTZ-80?

The AD9288BSTZ-80 has a 475 MHz analog bandwidth per channel, meaning it can accurately digitize signals with frequency content up to 475 MHz before significant attenuation occurs. However, for alias-free sampling per Nyquist, the maximum input frequency is half the 80 MSPS sampling rate - i.e., 40 MHz - assuming proper anti-alias filtering is applied prior to the ADC input.

Does the AD9288BSTZ-80 require an external reference voltage?

No, the AD9288BSTZ-80 includes an internal 1.25 V reference (REFOUT) that can be directly connected to REFINA and REFINB pins for self-contained operation. An external reference may be used for improved accuracy or custom full-scale range, but it is not required - the internal reference delivers ±130 ppm/°C stability and supports the full 47 dB SNR specification.

How does the standby mode function in the AD9288BSTZ-80?

The AD9288BSTZ-80 supports two standby configurations via S1/S2 pins: full standby (both channels disabled, 6–11 mW total) or Channel B-only standby (Channel A remains active). In standby, digital outputs enter high-impedance state and analog circuitry power is reduced - enabling dynamic power scaling in portable instruments where only one signal path is needed at a time.

Can the AD9288BSTZ-80 interface directly with 2.5 V logic systems?

Yes, the AD9288BSTZ-80's digital outputs are TTL/CMOS-compatible and support output supply voltages from 2.5 V to 3.6 V via the VDD pin. When VDD = 2.5 V, the outputs deliver valid logic levels (VOH ≥ 2.0 V, VOL ≤ 0.4 V) compatible with standard 2.5 V FPGA or ASIC interfaces - no level-shifting circuitry is required.

What is the purpose of the DFS pin on the AD9288BSTZ-80?

The DFS (Data Format Select) pin configures the digital output coding scheme: logic low selects offset binary format (0x00 = 0 V, 0xFF = full-scale positive), while logic high selects twos complement (0x80 = 0 V, 0xFF = most negative, 0x00 = most positive). This allows seamless integration with DSP processors or FPGAs expecting either representation without external translation logic.