STMicroelectronics TSL6802IST

Overview

TSL6802IST from STMicroelectronics is a dual rail-to-rail input/output nanopower operational amplifier optimized for ultra-low-power signal conditioning in space- and energy-constrained systems. It delivers 8 kHz gain bandwidth, 600 nA supply current (typ.), 5 pA max input bias current at 25 °C, and operates from 1.5 V to 5.5 V - enabling use in battery-powered sensor front-ends and portable medical monitors.

For engineers reviewing the TSL6802IST datasheet, TSL6802IST pinout, TSL6802IST application, or TSL6802IST equivalent, key selection criteria include its nanopower consumption, rail-to-rail I/O swing at sub-2 V supply, unity-gain stability with capacitive loads up to 100 pF, and guaranteed operation across –40 °C to +85 °C industrial temperature range.

Technical Context

The TSL6802IST integrates two independent amplifiers in a single MiniSO8 package, each featuring a CMOS input stage enabling 5 pA max input bias current and 0.1 mV typical input offset voltage. Its 8 kHz gain-bandwidth product and 3 V/ms slew rate are tightly coupled to its 600 nA quiescent current, making it unsuitable for high-speed applications but ideal for DC-coupled sensing and low-frequency filtering.

It supports rail-to-rail common-mode input (VCC− − 0.1 V to VCC+ + 0.1 V) and output swing (within 40 mV of rails), with phase reversal immunity confirmed per Figure 12. Absolute maximum ratings allow 6 V supply, but functional operation is specified only from 1.5 V to 5.5 V, and ESD robustness is rated at 2 kV HBM.

Key Specifications

Pinout & Package

MiniSO8 package: 3.0 mm × 4.9 mm body, 0.65 mm pitch, 1.0 mm height, RoHS-compliant ECOPACK2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2462IDR and LTC1540CS5#TRMPBF, the TSL6802IST uniquely balances sub-µA quiescent current, rail-to-rail I/O at 1.5 V, and guaranteed unity-gain stability - making it the only dual op-amp meeting all three requirements simultaneously for long-life battery systems.

Availability

TSL6802IST is available at Aetrix Electronics and suitable for wearable biopotential sensing, IoT environmental sensor nodes, smart meter battery backup circuits, and low-power industrial transmitters requiring stable component supply across extended production lifecycles.

Supply support for TSL6802IST 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, analog components, and MEMS sensors for industrial, automotive, and consumer markets.

The TSL680x series belongs to ST's nanopower precision analog portfolio, engineered specifically for ultra-low-energy signal acquisition in battery-operated edge devices where µA-level current budgets and wide supply flexibility are mandatory.

FAQ

Is the TSL6802IST unity-gain stable with capacitive loads?

Yes - the TSL6802IST is explicitly characterized and guaranteed unity-gain stable with capacitive loads up to 100 pF, as confirmed in Figure 19 of DS13726. For loads exceeding 100 pF, a series isolation resistor (Riso ≥ 10 kΩ) is required between output and load to maintain phase margin above 50°.

What is the maximum allowable supply voltage for continuous operation?

The absolute maximum supply voltage is 6 V (per Table 4), but the device is only specified for reliable operation from 1.5 V to 5.5 V (per Table 5). Operating continuously at 6 V exceeds the functional rating and may cause parametric shift or accelerated aging, especially at elevated temperatures.

Can the TSL6802IST drive ADC inputs directly?

Yes - its rail-to-rail output swing (within 40 mV of rails) and low output impedance (<1 Ω at DC) enable direct connection to SAR and sigma-delta ADC inputs. However, for sampling rates >10 kSPS, an external RC filter (e.g., 10 Ω + 10 nF) is recommended to limit charge kickback and ensure settling within ADC aperture time.

Does the TSL6802IST support dual-supply operation?

Yes - the MiniSO8 pinout defines separate VCC+ (pin 8) and VCC− (pin 4), allowing true dual-supply operation (e.g., ±1.8 V). When used in dual-supply mode, the common-mode input range extends from VCC− − 0.1 V to VCC+ + 0.1 V, and output swings within 40 mV of each rail, preserving full dynamic range.