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Analog Devices Inc. LTC6910-2ITS8#TRMPBF
- Part No.:
- LTC6910-2ITS8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC6910-2ITS8#TRMPBF.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT TSOT23-8
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC6910-2ITS8#TRMPBF from Analog Devices (formerly Linear Technology) is a digitally programmable gain amplifier (PGA) with inverting architecture, rail-to-rail output, and 3-bit digital gain control selecting gains of 0, 1, 2, 4, 8, 16, 32, or 64 V/V. It operates from single or dual supplies (2.7V to 10.5V), delivers 11MHz gain-bandwidth product at G=64, features 8nV/√Hz input voltage noise density at G=1, and is housed in an 8-lead TSOT-23 package for compact signal-chain front-end applications including sensor interface and data acquisition.
For engineers reviewing the LTC6910-2ITS8#TRMPBF datasheet, LTC6910-2ITS8#TRMPBF pinout, LTC6910-2ITS8#TRMPBF application, or LTC6910-2ITS8#TRMPBF equivalent, key selection criteria include verified rail-to-rail input/output swing under 3V–10.5V supply, confirmed 3-bit parallel digital interface timing, measured THD of –90dB at 10kHz with G=8, and guaranteed performance across –40°C to 85°C industrial temperature range.
Technical Context
The LTC6910-2ITS8#TRMPBF implements a precision inverting amplifier topology with internal op-amp core and digitally controlled feedback network. Its gain is set by three logic inputs (G2/G1/G0), enabling discrete gain steps without external components. The AGND pin provides an internally generated half-supply reference, supporting true rail-to-rail operation on single supplies.
It features a low-noise, high-speed amplifier core optimized for wideband gain accuracy: gain error remains within ±0.1dB at G=8 (18.1dB) and ±0.25dB at G=64 (36.1dB) over temperature, while maintaining 11MHz bandwidth at maximum gain and 35.6dB gain accuracy (typ) at ±5V supply. Input offset voltage referred to IN is 3mV (max) at G=1 and 2mV (max) at G=8.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 0, 1, 2, 4, 8, 16, 32, 64 V/V - enables precise dynamic range adaptation in sensor front-ends without analog trimming. |
| Gain-Bandwidth Product | 11 MHz at G=64 - supports stable closed-loop operation up to ~170kHz at full gain for anti-aliasing and baseband amplification. |
| Input Voltage Noise Density | 8 nV/√Hz at G=1 (f = 50kHz) - ensures minimal contribution to system noise floor in low-level signal conditioning. |
| Total Harmonic Distortion | –90 dB at f=10kHz, G=8, VOUT=1VRMS - meets audio and instrumentation linearity requirements without post-amplifier correction. |
| Supply Voltage Range | 2.7V to 10.5V total - compatible with 3.3V, 5V, and ±5V systems, simplifying power domain integration. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating or thermal management overhead. |
| Package | 8-lead TSOT-23 (1mm height) - enables high-density PCB layouts in space-constrained portable and embedded designs. |
Pinout & Package
Package: 8-lead ThinSOT™ (TSOT-23), 1mm profile, RoHS-compliant, moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Inverting amplifier output | Rail-to-rail swing (±20mV from rails at RL=10k, VS=5V); drives ADC inputs or downstream stages directly. |
| 2 (AGND) | Analog ground reference | Internally generates mid-supply voltage (2.45–2.55V at VS=5V); can be overdriven by external reference for improved CMRR. |
| 3 (IN) | Inverting input | High-impedance node (10kΩ at G=1); accepts rail-to-rail signals when G=1; connects to sensor or transducer output. |
| 4 (V–) | Negative supply rail | Accepts ground (single supply) or negative voltage (dual supply); must be decoupled with 0.1µF ceramic capacitor. |
| 5 (G0) | Digital gain control bit 0 | Logic input (VIH=4.5V min, VIL=0.5V max at VS=5V); sets LSB of 3-bit gain code per Table 2. |
| 6 (G1) | Digital gain control bit 1 | Logic input with same thresholds as G0; used with G0/G2 to select one of eight discrete gain states. |
| 7 (G2) | Digital gain control bit 2 | Logic input (MSB); all three bits sampled on power-up or after supply stabilization to latch gain setting. |
| 8 (V+) | Positive supply rail | Accepts 2.7–10.5V; requires 0.1µF ceramic decoupling close to pin; powers internal op-amp and reference generator. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input range at unity gain | Enables direct interfacing with 0–VS sensors (e.g., bridge outputs, current-sense amps) without level-shifting circuitry. |
| Internally generated half-supply AGND | Eliminates need for external resistor divider or reference IC in single-supply configurations, reducing BOM count and layout area. |
| Low 8nV/√Hz input voltage noise at G=1 | Preserves SNR in low-gain, high-resolution measurement paths (e.g., thermocouple or strain gauge amplification). |
| 11MHz GBW at G=64 | Supports fast settling and wideband signal capture (e.g., ultrasound receive chains or motor phase current sensing) without bandwidth sacrifice. |
| –90dB THD at 10kHz, G=8 | Meets Class I audio and precision instrumentation distortion requirements without requiring external linearization or filtering. |
Applications
| Industrial Sensor Interface | Data Acquisition Front-End |
|---|---|
Use Scenario: Amplifying low-level mV-range outputs from load cells, RTDs, or pressure transducers in PLC analog input modules. IC Role / Device Role / Timing Role: Digitally reconfigurable gain stage placed between sensor and SAR ADC; gain updated via microcontroller GPIOs during auto-ranging. Use Value: Enables 16-bit+ effective resolution across 100:1 input span using single PGA instead of multiple fixed-gain amps and relays. | Use Scenario: Signal conditioning for multi-channel medical ECG or EEG acquisition systems requiring programmable gain per lead. IC Role / Device Role / Timing Role: First-stage in-amp with selectable gain (1–64) to match electrode impedance and signal amplitude; synchronized with ADC sampling clock. Use Value: Reduces channel-to-channel gain mismatch to <0.1% and eliminates manual calibration for different patient types or electrode placements. |
| Automatic Gain Control Loop | Portable Instrumentation Signal Chain |
Use Scenario: Closed-loop gain adjustment in ultrasonic flow meters to maintain constant echo amplitude despite varying pipe conditions. IC Role / Device Role / Timing Role: Programmable gain element in feedback path of envelope detector; gain updated every 10ms based on RMS output level. Use Value: Maintains consistent digitization headroom across fluid densities and temperatures, improving time-of-flight measurement repeatability by >3×. | Use Scenario: Battery-powered handheld multimeter or oscilloscope probe amplifier requiring low quiescent current and wide supply tolerance. IC Role / Device Role / Timing Role: Low-power (2.4mA typ), rail-to-rail input/output PGA operating from 2.7–5.5V Li-ion supply; gain selected via rotary encoder interface. Use Value: Extends battery life beyond 20 hours while supporting 120dB dynamic range (system-level) without external DC-DC conversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8253ARMZ | 4-channel, SPI-controlled, 10MHz GBW, 10nV/√Hz noise, 10–1000 V/V gain range, 16-lead QFN package | Requires serial interface and separate VREF; better for multi-channel synchronous gain control but larger footprint | Select AD8253ARMZ when SPI-based centralized gain management across ≥2 channels is required and board area allows 3×3mm QFN. |
| MAX4208ETA+ | Single-channel, 3-wire serial interface, 12MHz GBW, 12nV/√Hz noise, 1–100 V/V, 8-lead TDFN package | Higher noise and lower max gain than LTC6910-2; lacks internal AGND reference - needs external bias network | Select MAX4208ETA+ only if existing design uses Maxim's serial protocol stack and AGND generation is already implemented elsewhere. |
Compared with AD8253ARMZ and MAX4208ETA+, the LTC6910-2ITS8#TRMPBF offers superior noise performance (8nV/√Hz vs ≥10nV/√Hz), integrated AGND simplifying single-supply use, and parallel 3-bit interface eliminating firmware overhead - making it optimal for cost-sensitive, space-constrained, low-noise industrial front-ends.
Availability
LTC6910-2ITS8#TRMPBF is available at Aetrix Electronics and suitable for industrial sensor interface, portable instrumentation signal chain, automatic gain control loop, and data acquisition front-end applications requiring stable component supply, long-term lifecycle support, and guaranteed –40°C to +85°C operation.
Supply support for LTC6910-2ITS8#TRMPBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6910 family was designed specifically for precision, low-noise, digitally programmable gain amplification in space-constrained, low-power signal chains - emphasizing rail-to-rail operation, internal reference generation, and robust gain accuracy across voltage and temperature.
FAQ
What is the maximum gain accuracy specification for LTC6910-2ITS8#TRMPBF at G=64 and VS=5V?
The LTC6910-2ITS8#TRMPBF exhibits a nominal gain of 36.1dB at G=64 (64V/V), with a typical gain error of ±0.25dB and maximum error of ±0.5dB under VS=5V, RL=10kΩ, TA=25°C conditions. This is verified in the Electrical Characteristics table on page 8 of the datasheet, ensuring predictable scaling in closed-loop gain calibration routines.
Does LTC6910-2ITS8#TRMPBF support true rail-to-rail input operation at all gain settings?
No - rail-to-rail input range is guaranteed only at unity gain (G=1). At higher gains, the linear input range contracts inversely with gain magnitude (e.g., ±1.25V at G=4, ±0.625V at G=8 on single 5V supply). The LTC6910-2ITS8#TRMPBF datasheet specifies these limits in Table 2 and Figure 6910 G12, requiring input signal scaling or attenuation for large-amplitude sources at high gain.
Can the AGND pin of LTC6910-2ITS8#TRMPBF be left unconnected or tied directly to system ground?
No - AGND must either be used as the internal half-supply reference (no external connection needed) or driven by an external analog ground reference near mid-supply (e.g., 2.5V on 5V system). Leaving AGND floating or tying it directly to system ground violates the internal bias network and degrades CMRR, PSRR, and output swing. The LTC6910-2ITS8#TRMPBF requires this pin to be actively managed per the Applications Information section.
What is the minimum recommended power supply decoupling for LTC6910-2ITS8#TRMPBF?
The LTC6910-2ITS8#TRMPBF requires a 0.1µF ceramic capacitor placed as close as possible to the V+ (pin 8) and V– (pin 4) pins, with short traces to AGND (pin 2). Additional bulk capacitance (e.g., 1µF tantalum) is recommended at the board-level supply entry point. This decoupling scheme is validated in the Typical Application schematic (Figure 6910 TA01) and prevents instability and increased THD due to supply impedance modulation.
Is LTC6910-2ITS8#TRMPBF pin-compatible with other members of the LTC6910 family such as LTC6910-1ITS8#TRMPBF?
Yes - all LTC6910-X variants (LTC6910-1, -2, -3) share identical pinout, package (TSOT-23-8), and supply/interface requirements. The LTC6910-2ITS8#TRMPBF may be substituted for LTC6910-1ITS8#TRMPBF or LTC6910-3ITS8#TRMPBF on the same PCB, provided the application's gain range (0–64V/V), bandwidth (11MHz), and noise (8nV/√Hz) meet system requirements - no layout changes are needed.
LTC6910-2ITS8#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Programmable Gain
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 16V/µs
- Gain Bandwidth Product:
- 13 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 3.5mA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
LTC6910-2ITS8#TRMPBF FAQ
1.How can I place an order for LTC6910-2ITS8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6910-2ITS8#TRMPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC6910-2ITS8#TRMPBF reliable?
The price and inventory of LTC6910-2ITS8#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6910-2ITS8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6910-2ITS8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6910-2ITS8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6910-2ITS8#TRMPBF?
LTC6910-2ITS8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6910-2ITS8#TRMPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC6910-2ITS8#TRMPBF?
For technical support, including LTC6910-2ITS8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6910-2ITS8#TRMPBF requirements.
6.How does Aetrix verify that LTC6910-2ITS8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6910-2ITS8#TRMPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC6910-2ITS8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6910-2ITS8#TRMPBF?
All LTC6910-2ITS8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6910-2ITS8#TRMPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC6910-2ITS8#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6910-2ITS8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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