Analog Devices Inc. LT6220CS8#PBF

Overview

LT6220CS8#PBF from Analog Devices (formerly Linear Technology) is a single, rail-to-rail input and output precision operational amplifier optimized for low-power, high-speed signal conditioning in 3V–5V systems. It delivers 60MHz gain-bandwidth product, 20V/µs slew rate, <350µV input offset voltage, 1mA supply current per amplifier, and full rail-to-rail swing - enabling high-fidelity buffering and driving of ADC inputs in portable instrumentation.

For engineers reviewing the LT6220CS8#PBF datasheet, LT6220CS8#PBF pinout, LT6220CS8#PBF application, or LT6220CS8#PBF equivalent, key selection criteria include its guaranteed 0°C to 70°C operation, SO-8 package with standard op amp pinout, 2.2V–12.6V supply flexibility, and verified performance in fast current sensing and video signal paths where low noise (10nV/√Hz) and high PSRR (105dB) are critical.

Technical Context

The LT6220CS8#PBF employs a dual-input-stage architecture-PNP and NPN differential pairs-that automatically transitions across the full input common-mode range (VS– to VS+), eliminating phase reversal when driven beyond rails. Its output stage uses complementary Class AB topology to achieve rail-to-rail swing within 10mV at ±5mA load while maintaining stability with capacitive loads up to 1000pF.

Internally compensated for unity-gain stability, it features 100V/mV open-loop gain and 102dB CMRR, supporting precision closed-loop configurations such as transimpedance amplifiers and active filters without external compensation. The device operates from single supplies as low as 2.2V or split supplies up to ±6.3V.

Key Specifications

Pinout & Package

LT6220CS8#PBF is housed in an 8-lead plastic SO (Small Outline) package with standard op amp pinout and JEDEC MS-012AC footprint. Thermal resistance θ_JA = 190°C/W enables operation at full spec without heatsinking below 50mW dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA355IDBVR and AD8031ARZ-REEL7, the LT6220CS8#PBF uniquely balances 60MHz bandwidth, 1mA quiescent current, and rail-to-rail I/O in a standard SO-8 footprint - making it optimal for space-constrained, battery-operated precision analog systems where thermal management and PCB real estate are critical.

Availability

LT6220CS8#PBF is available at Aetrix Electronics and suitable for portable instrumentation, medical sensors, and industrial data acquisition systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.

Supply support for LT6220CS8#PBF 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs for precision measurement, communications, and power management.

The LT6220 family was designed specifically for low-voltage, high-speed precision signal conditioning - targeting applications demanding rail-to-rail operation, low power, and robust DC accuracy without sacrificing AC performance.

FAQ

What is the maximum supply voltage for LT6220CS8#PBF?

The absolute maximum total supply voltage (VS+ to VS–) for LT6220CS8#PBF is 12.6V. Operation beyond this risks permanent damage. For reliable long-term use, Analog Devices specifies operation from 2.2V to 12.6V, with full performance guaranteed at 3V, 5V, and ±5V supplies. The LT6220CS8#PBF maintains rail-to-rail input/output functionality across this entire range.

Does LT6220CS8#PBF support rail-to-rail input with single-supply operation?

Yes, LT6220CS8#PBF supports true rail-to-rail input - its input common-mode range extends from VS– to VS+, even when powered from a single 3V or 5V supply. This allows direct interfacing with sensors or DACs referenced to ground or supply rails without external level-shifting circuitry. The LT6220CS8#PBF achieves this using a dual-input-stage architecture that seamlessly transitions between PNP and NPN differential pairs.

Can LT6220CS8#PBF drive heavy capacitive loads without oscillation?

Yes, LT6220CS8#PBF is internally compensated for unity-gain stability and remains unconditionally stable driving capacitive loads up to 1000pF, as confirmed in the datasheet's Typical Performance Characteristics (Figure G31/G32). For loads exceeding 1000pF, a small series resistor (e.g., 10Ω) at the output is recommended to isolate capacitance and maintain phase margin - a design practice explicitly validated for LT6220CS8#PBF.

What is the typical input bias current of LT6220CS8#PBF at room temperature?

The typical input bias current of LT6220CS8#PBF is 15nA at 25°C and VCM = 1V, with a maximum of 150nA across the full 0°C to 70°C operating range. This low bias current minimizes voltage errors in high-impedance circuits such as photodiode transimpedance amplifiers or precision filter networks. The LT6220CS8#PBF achieves this via active bias cancellation circuitry integrated into its dual-input-stage design.

Is LT6220CS8#PBF pin-compatible with standard SO-8 op amps like LM358 or OP27?

No, LT6220CS8#PBF is not pin-compatible with LM358 or OP27. While all use SO-8 packages, LT6220CS8#PBF follows the industry-standard single-op-amp pinout (V–, –IN, +IN, V+, NC, NC, OUT, NC), whereas LM358 uses a dual-amplifier configuration and OP27 has different power pin assignments. Layout reuse requires verification against the LT6220CS8#PBF pin diagram - specifically confirming pins 4 (VS–), 7 (VS+), and 1 (OUT) placement.