Analog Devices Inc. AD876JSTZ

Overview

AD876JSTZ from Analog Devices is a CMOS 10-bit, 20 MSPS analog-to-digital converter with on-chip sample-and-hold, +5 V single-supply operation, 160 mW power dissipation, and guaranteed no missing codes - designed for high-speed video digitization, CCD imaging systems, and portable data acquisition.

For engineers reviewing the AD876JSTZ datasheet, AD876JSTZ pinout, AD876JSTZ application, or AD876JSTZ equivalent, this page delivers verified technical context, real-world timing and dynamic performance values, package-specific pin mapping, and validated alternative options for video, imaging, and communications signal chain design.

Technical Context

The AD876JSTZ implements a multistage pipelined architecture with output error correction logic to achieve 10-bit accuracy at 20 MSPS while guaranteeing no missing codes over 0°C to +70°C. Its internal sample-and-hold amplifier supports differential nonlinearity of ±0.5 LSB and full-power bandwidth of 150 MHz.

It features force-sense reference inputs (REFTF/REFTS/REFBF/REFBS) to minimize voltage drop errors, three-state digital outputs compatible with +3.3 V or +5 V logic, and a standby mode reducing power below 50 mW. Clock input is buffered from DRVDD, enabling robust 20 MSPS timing with aperture jitter of 22 ps.

Key Specifications

Pinout & Package

AD876JSTZ is packaged in a 48-lead thin quad flatpack (TQFP), RoHS-compliant, with 0.5 mm pitch and exposed thermal pad. Pin layout supports high-density PCB routing and low-inductance ground return paths for analog integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9203ARUZ and MAX1186ECM+, the AD876JSTZ uniquely balances 20 MSPS throughput, integrated force-sense reference, and 10-bit monotonicity in a single TQFP package - making it optimal for fixed-frame-rate imaging systems requiring predictable analog interface behavior without external support components.

Availability

AD876JSTZ is available at Aetrix Electronics and suitable for color document scanning, digital camcorder signal chains, and electronic still camera CCD interfaces requiring stable component supply across extended production lifecycles.

Supply support for AD876JSTZ 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, founded in 1965 and headquartered in Wilmington, MA.

The AD876 series belongs to Analog Devices' precision high-speed data converter product line, engineered specifically for demanding video, imaging, and instrumentation applications where resolution, speed, and power efficiency must coexist.

FAQ

What is the guaranteed operating temperature range for the AD876JSTZ?

The AD876JSTZ is specified for commercial operation from 0°C to +70°C. This range is validated across all key parameters including INL (±1.0 LSB), DNL (±0.5 LSB), and effective number of bits (9.0 bits at 1 MHz). It does not support industrial or extended temperature grades - for −40°C to +85°C operation, the AD876AR or AD876ARS variants must be used instead of the AD876JSTZ.

Does the AD876JSTZ require an external reference voltage source?

Yes, the AD876JSTZ requires an external reference applied to REFTF and REFBF pins, with optional force-sense connections to REFTS and REFBS. The device contains no internal reference; typical configurations use precision op-amps (e.g., AD826) to generate stable +4.0 V and +2.0 V references. The AD876JSTZ's 250 Ω internal ladder draws ~8 mA, so the external source must sustain this load without droop or noise.

Can the AD876JSTZ operate with a 3.3 V digital supply for its I/O interface?

Yes, the AD876JSTZ supports DRVDD = +3.3 V, which configures its digital inputs (CLK, THREE-STATE, STBY) and outputs (D0–D9) for +3.3 V logic compatibility. At DRVDD = 3.3 V, VIH is 2.4 V and VOL is 0.4 V (IOL = 0.6 mA), meeting standard LVTTL/LVCMOS thresholds. This allows direct interfacing with FPGAs and microcontrollers without level shifters.

What is the pipeline latency of the AD876JSTZ, and how does it affect system synchronization?

The AD876JSTZ has a fixed pipeline latency of 3.5 clock cycles - meaning the digital output corresponding to a given analog sample appears 3.5 CLK periods after that sample is acquired. This deterministic delay enables precise timing alignment in frame-synchronized systems like CCD imagers, where firmware or FPGA logic can compensate by offsetting trigger events accordingly. Latency remains constant across all operating conditions.

Is the AD876JSTZ pin-compatible with the 8-bit AD876JR-8 variant?

No, the AD876JSTZ (48-lead TQFP) is not pin-compatible with the AD876JR-8 (28-lead SOIC). While both belong to the AD876 family and share functional equivalence in signal chain role, their physical packages differ entirely - different pin count, pitch, and layout. Migration from JR-8 to JSTZ requires PCB redesign; however, the register map, timing, and electrical interface remain consistent.