Analog Devices Inc. LT1358IN8#PBF

Overview

LT1358IN8#PBF from Analog Devices (formerly Linear Technology) is a dual high-speed voltage-feedback operational amplifier with 25MHz gain bandwidth, 600V/µs slew rate, and 2.5mA maximum supply current per amplifier. It features matched high-impedance inputs, unity-gain stability, and C-Load™ drive capability for any capacitive load - making it ideal for precision data acquisition systems, active filters, and photodiode amplification circuits operating from ±2.5V to ±15V supplies.

For engineers reviewing the LT1358IN8#PBF datasheet, LT1358IN8#PBF pinout, LT1358IN8#PBF application, or LT1358IN8#PBF equivalent, key selection criteria include its 115ns 0.1% settling time on 10V steps, ±12.5V output swing into 500Ω at ±15V supplies, 8nV/√Hz input noise, and guaranteed operation from –40°C to +85°C in the 8-pin PDIP package.

Technical Context

The LT1358IN8#PBF employs a proprietary voltage-feedback topology with current-feedback slewing behavior, enabling both high DC precision and fast transient response. Its input stage uses complementary NPN/PNP emitter followers for bias current cancellation, while internal bootstrapped RC compensation ensures unconditional stability with capacitive loads up to 10,000pF.

This architecture delivers 20V/mV minimum DC gain at RL = 1kΩ, 98dB channel separation, and consistent performance across ±2.5V, ±5V, and ±15V supply rails - supporting low-voltage portable instrumentation and high-dynamic-range industrial signal conditioning without redesign.

Key Specifications

Pinout & Package

LT1358IN8#PBF is housed in an 8-pin plastic DIP (N8) package with 0.300-inch width, JEDEC MS-001 compliant footprint, and through-hole mounting. Thermal resistance θ_JA = 130°C/W enables operation up to +85°C ambient without heatsinking at typical loads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1358IN8#PBF, LT1360CS8#PBF trades 1.6× higher supply current for 2× bandwidth and 33% faster slew, while LT1355CS8#PBF reduces supply current by 60% at the cost of 52% lower bandwidth - enabling precise trade-offs between speed, power, and precision.

Availability

LT1358IN8#PBF is available at Aetrix Electronics and suitable for data acquisition systems, active filter modules, photodiode amplifier circuits, and DAC I-to-V converters requiring stable component supply across industrial temperature ranges.

Supply support for LT1358IN8#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 acquired Linear Technology in 2017 and maintains full product support, manufacturing, and qualification for all Linear op-amps including the LT1358 family.

The LT1358 series was designed specifically for high-speed, low-power precision analog signal conditioning - targeting applications demanding both wide bandwidth and low distortion in dual-channel configurations.

FAQ

What is the maximum capacitive load the LT1358IN8#PBF can drive without instability?

The LT1358IN8#PBF is unconditionally stable with any capacitive load up to 10,000pF, per the manufacturer's C-Load™ specification. This eliminates the need for external isolation resistors in cable-driving, active filter, or ADC buffer applications - unlike conventional op-amps that require careful compensation above ~100pF. Stability is maintained across all supply voltages and temperatures.

Does the LT1358IN8#PBF support single-supply operation?

Yes, the LT1358IN8#PBF operates from total supply voltages as low as ±2.5V (i.e., 5V total), enabling true single-supply use with V– tied to ground and V+ at +5V. Input common-mode range extends to within 0.5V of rails, and output swing reaches ±3V into 150Ω - sufficient for driving 0–3.3V or 0–5V ADC inputs directly when configured with appropriate biasing.

What is the guaranteed operating temperature range for the LT1358IN8#PBF?

The LT1358IN8#PBF is specified and guaranteed over –40°C to +85°C (Industrial grade), with full electrical performance validated across this range. The "I" suffix denotes industrial qualification, distinct from the commercial-grade "C" version (0°C to 70°C). Thermal derating is not required within this envelope when mounted on standard FR-4 PCBs.

How does the LT1358IN8#PBF achieve both high slew rate and low input bias current?

The LT1358IN8#PBF uses a patented complementary NPN/PNP input stage where base currents oppose each other, achieving first-order bias current cancellation. This yields typical input bias current of 120–500nA (±2.5V to ±15V) while maintaining 600V/µs slew rate via high-current mirroring into the gain node - a topology that decouples slewing performance from input stage current limitations.

Can the LT1358IN8#PBF replace older op-amps like the LM358 or OP27 in existing designs?

The LT1358IN8#PBF is not a drop-in replacement for LM358 (low-speed, rail-to-rail output) or OP27 (precision, low-noise, but slower). Its 25MHz GBW and 600V/µs slew rate far exceed both, but pinout differs (LM358 is 8-pin SOIC/DIP but non-compatible; OP27 is 8-pin but single-channel). Redesign is required for layout and compensation - however, it delivers measurable improvements in settling time, noise, and drive capability where those parameters are limiting.