Analog Devices Inc. AD8032BRZ

Overview

AD8032BRZ from Analog Devices is a dual, rail-to-rail input/output voltage feedback operational amplifier optimized for high-speed, low-power applications. It delivers 80 MHz small-signal bandwidth, 30 V/μs slew rate, and 125 ns settling time to 0.1% while consuming only 800 μA per amplifier at +5 V supply. It operates from +2.7 V to +12 V (or ±1.35 V to ±6 V), supports rail-to-rail output swing within 20 mV of either supply under light load, and is widely used as an A/D converter buffer in portable instrumentation.

For engineers reviewing the AD8032BRZ datasheet, AD8032BRZ pinout, AD8032BRZ application, or AD8032BRZ equivalent, key selection considerations include its dual-channel rail-to-rail I/O performance at sub-4 mW total power, guaranteed operation over −40°C to +85°C, and compatibility with single-supply systems requiring wide input common-mode range (−0.2 V to +5.2 V on +5 V) and low THD (−86 dBc at 100 kHz, 4.6 V_p-p).

Technical Context

The AD8032BRZ employs a proprietary eXtra Fast Complementary Bipolar (XFCB) process and dual-input-stage architecture-switching between PNP and NPN differential pairs-to enable true rail-to-rail input operation with no phase reversal up to 500 mV beyond either supply rail. Its input common-mode voltage extends 200 mV beyond rails, and output swing reaches within 20 mV of supplies at 10 kΩ load.

This architecture maintains constant transconductance across input ranges, preserving bandwidth and gain stability. The rail-to-rail output stage uses common-emitter transistors with ~25 Ω effective collector resistance, enabling 15 mA output drive while sustaining linear open-loop gain within 250 mV of V_CC and 150 mV of V_EE.

Key Specifications

Pinout & Package

AD8032BRZ is packaged in an 8-lead SOIC_N (R) surface-mount package with standard pinout and thermal pad omitted. Pin functions are electrically validated per Analog Devices Rev. G datasheet Figure 2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-speed rail-to-rail op-amp applications.

Compared with LMH6612MM/NOPB and ADA4891-2ARZ, AD8032BRZ uniquely combines 80 MHz bandwidth, true rail-to-rail input *and* output, and sub-1 mA quiescent current - making it optimal for portable, single-supply systems demanding maximum signal range and minimum power.

Availability

AD8032BRZ is available at Aetrix Electronics and suitable for portable test instrumentation, A/D converter buffering, and single-supply active filters requiring stable component supply and guaranteed industrial temperature operation (−40°C to +85°C).

Supply support for AD8032BRZ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD803x family was designed specifically for high-speed, low-power, single-supply signal conditioning - targeting battery-operated instruments, dense PCB layouts, and precision data acquisition systems where rail-to-rail I/O and microamp-level quiescent current are essential.

FAQ

What supply voltage range does the AD8032BRZ support?

The AD8032BRZ operates from +2.7 V to +12 V for single-supply use or ±1.35 V to ±6 V for dual-supply configurations. At +5 V, it draws 800 μA per amplifier. Its input common-mode range extends to −0.2 V and +5.2 V, and output swings to within 20 mV of either rail under light load - all verified per Analog Devices Rev. G datasheet Tables 1–3 and Figure 40.

Does the AD8032BRZ have rail-to-rail input and output capability?

Yes, the AD8032BRZ features true rail-to-rail input and output. Its input common-mode voltage range extends 200 mV beyond both supply rails (e.g., −0.2 V to +5.2 V on +5 V), and output voltage swing reaches within 20 mV of either rail when driving ≥10 kΩ. This is confirmed in the General Description, Connection Diagrams, and Output Characteristics sections of the AD8032BRZ datasheet Rev. G.

What is the small-signal bandwidth and slew rate of the AD8032BRZ?

The AD8032BRZ delivers 80 MHz small-signal bandwidth at G = +1 and a 30 V/μs slew rate at +5 V supply, as specified in Table 1 (2.7 V), Table 2 (+5 V), and Table 3 (±5 V) of the Rev. G datasheet. These values are measured under defined conditions (RL = 1 kΩ, CL = 10 pF) and remain stable across the industrial temperature range.

Can the AD8032BRZ drive heavy capacitive loads?

The AD8032BRZ is characterized for stable operation with ≥15 pF capacitive load at G = +2 (Figure 46, Rev. G datasheet). For larger loads (e.g., >50 pF), external series isolation resistance (~10–50 Ω) is recommended at the output to maintain phase margin. Its ability to drive moderate capacitance simplifies anti-alias filter design without requiring additional buffer stages.

What is the maximum output current capability of the AD8032BRZ?

The AD8032BRZ provides ±15 mA continuous output current per amplifier, with short-circuit sourcing capability of +28 mA and sinking of −46 mA at +5 V supply (Table 2, Rev. G datasheet). Output voltage swing degrades linearly with load current due to ~25 Ω effective output transistor resistance - e.g., swing reduces by ~0.15 V at 6 mA load.