Analog Devices Inc. LTC6910-2CTS8#TRPBF

Overview

LTC6910-2CTS8#TRPBF from Analog Devices is a digitally controlled, inverting programmable gain amplifier (PGA) in an 8-lead TSOT-23 package. It delivers precise 3-bit digital gain selection (0, 1, 2, 4, 8, 16, 32, 64 V/V), rail-to-rail output swing, 11 MHz gain-bandwidth product, and 8 nV/√Hz input voltage noise density at 50 kHz - enabling high-resolution signal conditioning in space-constrained data acquisition systems.

For engineers reviewing the LTC6910-2CTS8#TRPBF datasheet, LTC6910-2CTS8#TRPBF pinout, LTC6910-2CTS8#TRPBF application, or LTC6910-2CTS8#TRPBF equivalent, key selection criteria include its single/dual supply operation (2.7 V to 10.5 V), internal half-supply AGND reference for single-supply use, ±1.5 mV input-referred offset voltage at G=1, and verified performance across –40°C to 85°C.

Technical Context

The LTC6910-2CTS8#TRPBF implements a precision inverting amplifier architecture with integrated 3-bit digital control logic driving internal resistor networks. Its rail-to-rail output stage supports full dynamic range utilization with loads down to 500 Ω, while the internally generated AGND reference (2.5 V at VS = 5 V) eliminates external biasing components in single-supply configurations.

Gain accuracy is maintained across temperature and supply variations via laser-trimmed thin-film resistors; gain error remains within ±0.1 dB at G = 1 and ±0.2 dB at G = 64 (VS = 5 V, RL = 10 kΩ). The device's 11 MHz gain-bandwidth product ensures stable closed-loop response up to 175 kHz at G = 64, supporting wideband sensor interface and automatic ranging applications.

Key Specifications

Pinout & Package

Package: 8-lead TSOT-23 (ThinSOT™), 1 mm height, 0.65 mm pitch, JEDEC MO-220 compatible.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable gain amplifier applications.

Compared with AD8253ARMZ and MCP6S26-I/ST, the LTC6910-2CTS8#TRPBF uniquely combines GPIO-based 3-bit parallel control, internal AGND reference, rail-to-rail I/O, and 11 MHz bandwidth in an ultra-small TSOT-23 package - making it optimal for space-constrained, single-channel, fast-response analog front-ends.

Availability

LTC6910-2CTS8#TRPBF is available at Aetrix Electronics and suitable for data acquisition systems, automatic ranging circuits, dynamic gain changing, and automatic gain control requiring stable component supply, industrial temperature support, and long-term production continuity.

Supply support for LTC6910-2CTS8#TRPBF 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) is a global leader in high-performance analog, mixed-signal, and DSP technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC6910 family was designed specifically for precision, low-power, space-constrained programmable gain applications - emphasizing ease of use, minimal external components, and robust performance across supply and temperature extremes.

FAQ

What is the maximum operating supply voltage for the LTC6910-2CTS8#TRPBF?

The LTC6910-2CTS8#TRPBF has an absolute maximum total supply voltage (V+ to V–) rating of 11 V. Its specified operating range is 2.7 V to 10.5 V, meaning it functions reliably up to 10.5 V - for example, with ±5.25 V dual supplies or a 10.5 V single supply. Exceeding 11 V risks permanent damage per Absolute Maximum Ratings.

Does the LTC6910-2CTS8#TRPBF support true rail-to-rail input operation?

Yes, the LTC6910-2CTS8#TRPBF supports rail-to-rail input voltage range *only when configured for unity gain (G = 1)*. At other gain settings, the linear input range contracts inversely with gain - e.g., ~1.25 V_P-P at G = 4 (single 5 V supply). This behavior is documented in Table 2 and confirmed in the "Rail-to-Rail Input Range" feature list.

How is the AGND pin used in single-supply configurations of the LTC6910-2CTS8#TRPBF?

In single-supply operation, the AGND pin of the LTC6910-2CTS8#TRPBF provides an internally generated reference at approximately half the supply voltage (e.g., 2.45–2.55 V at VS = 5 V). This eliminates need for external resistor dividers. AGND can also be driven by an external system analog ground reference near mid-supply, enhancing noise immunity and PSRR in noisy environments.

What is the gain error specification for the LTC6910-2CTS8#TRPBF at G = 64?

At G = 64, the LTC6910-2CTS8#TRPBF exhibits a typical gain error of –0.07 dB (≈ –0.8%) and a maximum error of +0.15 dB (≈ +1.7%) under standard conditions (VS = 5 V, RL = 10 kΩ, TA = 25°C), as specified in the Electrical Characteristics table on page 8. This error remains stable across temperature (–40°C to 85°C) due to laser-trimmed resistor networks.

Can the LTC6910-2CTS8#TRPBF be used with a 3.3 V supply, and what performance trade-offs apply?

Yes, the LTC6910-2CTS8#TRPBF operates fully across 2.7 V to 10.5 V, including 3.3 V single supply. At 3.3 V, the linear input range shrinks (e.g., 0.75 V_P-P at G = 4), slew rate drops to ~10 V/µs, and output swing reduces to ~30 mV from rails (RL = 10 kΩ). However, gain accuracy, noise, and bandwidth remain within datasheet limits - making it viable for low-voltage portable instrumentation.