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Analog Devices Inc. LTC6910-1ITS8#TRPBF
- Part No.:
- LTC6910-1ITS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC6910-1ITS8#TRPBF.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,452
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Product details
Overview
LTC6910-1ITS8#TRPBF from Analog Devices is a digitally programmable gain amplifier (PGA) with inverting architecture, rail-to-rail output, and 3-bit digital gain control. It delivers precise gains of 0, 1, 2, 5, 10, 20, 50, or 100 V/V, operates from 2.7V to 10.5V supplies, features 11 MHz gain-bandwidth product, and supports single-supply data acquisition systems requiring dynamic range up to 120 dB.
For engineers reviewing the LTC6910-1ITS8#TRPBF datasheet, LTC6910-1ITS8#TRPBF pinout, LTC6910-1ITS8#TRPBF application, or LTC6910-1ITS8#TRPBF equivalent, key selection criteria include verified gain accuracy at 100 V/V, input-referred voltage noise of 8 nV/√Hz at G = 1, AGND internal half-supply reference capability, and compatibility with 8-pin TSOT-23 layouts for space-constrained signal conditioning.
Technical Context
The LTC6910-1ITS8#TRPBF implements an inverting amplifier topology with integrated precision op-amp core and digitally controlled feedback network. Its 3-bit parallel interface (G2/G1/G0) selects discrete gain states without external components, and the AGND pin provides a stable ½ VS reference for single-supply operation.
It maintains rail-to-rail output swing across all gain settings and supply voltages (2.7V–10.5V), while its open-loop gain and bandwidth are gain-dependent-e.g., –3 dB bandwidth drops from ~7.5 MHz at G = 1 to ~1.5 MHz at G = 100-enabling predictable frequency response in closed-loop configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 0, 1, 2, 5, 10, 20, 50, 100 V/V - enables discrete, stepwise amplification without analog trimming or external resistors |
| Gain-Bandwidth Product | 11 MHz - defines maximum usable frequency at G = 1; bandwidth scales inversely with gain (e.g., ~110 kHz at G = 100) |
| Input Voltage Noise | 8 nV/√Hz at G = 1 - sets minimum detectable signal level in low-amplitude sensor interfaces |
| Supply Voltage Range | 2.7V to 10.5V total - supports single-ended (2.7V–5V) and split-supply (±2.5V–±5V) operation |
| Output Swing | Rail-to-rail - delivers full dynamic range into high-impedance loads (e.g., ADC inputs) without headroom loss |
| Operating Temperature | –40°C to 85°C - qualified for industrial-grade embedded signal chains with thermal stability |
| Package | 8-pin TSOT-23 (1 mm height) - surface-mount footprint compatible with automated PCB assembly and compact sensor modules |
Pinout & Package
Package: 8-lead plastic TSOT-23 (ThinSOT™), 1 mm profile, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Inverting amplifier output | Delivers rail-to-rail inverted signal; drives ADCs, filters, or downstream stages directly |
| 2 (AGND) | Analog ground reference | Internally biased at ½ VS (±50 mV tolerance); can be overdriven by system AGND for improved PSRR |
| 3 (IN) | Inverting input | Accepts rail-to-rail input signals when G = 1; high-impedance node (≥10 MΩ at G = 0) |
| 4 (V–) | Negative supply | Connect to ground (single supply) or negative rail (split supply); required for biasing internal op-amp |
| 5 (G0) | Digital gain control bit 0 | LSB of 3-bit code; logic high = 1, logic low = 0; TTL/CMOS-compatible thresholds |
| 6 (G1) | Digital gain control bit 1 | Mid-bit of 3-bit code; determines gain step size (e.g., G1=1, G0=1 → G = 5 for LTC6910-1) |
| 7 (G2) | Digital gain control bit 2 | MSB of 3-bit code; selects major gain group (e.g., G2=1, G1=1, G0=1 → G = 100) |
| 8 (V+) | Positive supply | Accepts 2.7V–10.5V; powers internal op-amp and digital logic; decoupling capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| Digitally programmable gain | 8 discrete, factory-trimmed gain states selected via 3-wire parallel interface-no software overhead or SPI timing constraints |
| Rail-to-rail input/output | Full signal swing utilization from V– to V+ at G = 1; eliminates need for level-shifting in single-supply systems |
| Internal half-supply reference | AGND pin generates stable ½ VS (2.45–2.55 V at VS = 5 V) - removes external resistor divider and improves common-mode rejection |
| Low-noise performance | 8 nV/√Hz input-referred noise at G = 1 and 10.7 µV RMS wideband noise (1–200 kHz) - preserves SNR in precision sensor front-ends |
| High dynamic range | 120 dB system dynamic range achievable - enables detection of µV-level signals amid mV-level offsets in instrumentation applications |
Applications
| Industrial Sensor Interface | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying low-level bridge sensor outputs (e.g., load cells, pressure transducers) in PLC analog input modules. IC Role / Device Role / Timing Role: Inverting PGA providing programmable gain staging before 24-bit ΣΔ ADC sampling. Use Value: Enables automatic ranging across ±10 mV to ±1 V full-scale inputs using same hardware, reducing BOM variants and calibration effort. | Use Scenario: Conditioning ECG electrode signals with variable gain to accommodate patient-specific amplitude variations. IC Role / Device Role / Timing Role: Front-end gain stage with rail-to-rail input handling DC-coupled biopotential signals. Use Value: Maintains >100 dB SNR at G = 100 while rejecting 50/60 Hz interference via precise CMRR (≥55 dB) and AGND reference stability. |
| Automated Test Equipment | Portable Data Loggers |
Use Scenario: Dynamic gain adjustment during multi-range voltage measurements in benchtop DMMs or source-measure units. IC Role / Device Role / Timing Role: Digitally reconfigurable signal path element enabling fast gain switching between measurement ranges. Use Value: Achieves <1 µs gain settling time and <0.1% gain error at G = 100 - ensures accurate digitization without post-processing correction. | Use Scenario: Battery-powered environmental monitoring nodes measuring thermocouple, RTD, or gas sensor outputs. IC Role / Device Role / Timing Role: Low-power, single-supply PGA interfacing microcontroller ADC with minimal external components. Use Value: Draws only 2.4 mA typical supply current at 2.7 V - extends battery life while supporting 120 dB dynamic range over –40°C to 85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6910-2ITS8#TRPBF | Gains: 0, 1, 2, 4, 8, 16, 32, 64 V/V - binary progression optimized for digital control scaling | Better suited for applications requiring power-of-two gain steps (e.g., automatic gain control loops with logarithmic response) | Select when gain resolution at higher values (e.g., 32–64×) is prioritized over linear step sizes like 5× or 50× |
| AD8253ARMZ | 4-channel, SPI-controlled, 10 MHz GBW, 25 nV/√Hz noise - higher noise, serial interface, wider supply (±5V to ±15V) | Targets multi-channel, high-voltage industrial DAQ where SPI configurability and channel density outweigh noise and speed requirements | Choose for systems needing multiple synchronized PGAs or operation beyond 10.5 V total supply |
Compared with LTC6910-2ITS8#TRPBF and AD8253ARMZ, the LTC6910-1ITS8#TRPBF offers superior low-noise performance (8 vs. 25 nV/√Hz) and finer gain granularity (5×, 50×) ideal for precision single-channel sensor interfaces, while avoiding SPI overhead and supporting lower supply voltages.
Availability
LTC6910-1ITS8#TRPBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and automated test equipment requiring stable component supply, long-term lifecycle support, and guaranteed temperature-rated performance.
Supply support for LTC6910-1ITS8#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC6910 family was designed specifically for precision, low-noise, digitally programmable amplification in space-constrained, single-supply signal chains - emphasizing ease of use, minimal external components, and robust rail-to-rail operation.
FAQ
What gain settings does the LTC6910-1ITS8#TRPBF support?
The LTC6910-1ITS8#TRPBF supports eight discrete inverting gain settings: 0, 1, 2, 5, 10, 20, 50, and 100 V/V, selected via its 3-bit parallel digital inputs (G2/G1/G0). These values are factory-trimmed and specified across temperature; gain accuracy is ±0.1 dB typical at G = 100 with 2.7 V to 10.5 V supplies. The LTC6910-1ITS8#TRPBF does not support interpolation or analog gain adjustment.
Can the LTC6910-1ITS8#TRPBF operate from a single 3.3 V supply?
Yes, the LTC6910-1ITS8#TRPBF operates from a single 3.3 V supply (V+ = 3.3 V, V– = GND), with rail-to-rail input and output capability. At this supply, the AGND pin provides a stable ~1.65 V reference, and linear input range remains rail-to-rail for G = 1. The LTC6910-1ITS8#TRPBF draws ~2.4 mA typical supply current under these conditions and maintains full functionality across its –40°C to 85°C rated temperature range.
How is the AGND pin used in single-supply configurations?
In single-supply configurations, the AGND pin of the LTC6910-1ITS8#TRPBF provides an internally generated half-supply reference (~VS/2) with ±50 mV tolerance at VS = 5 V, enabling true rail-to-rail input operation. It can be left floating (relying on internal divider) or driven externally by a low-impedance system analog ground near VS/2 to improve PSRR and reduce drift. The LTC6910-1ITS8#TRPBF specifies AGND rejection ≥55 dB, confirming its effectiveness as a stable common-mode reference.
What is the small-signal output resistance of the LTC6910-1ITS8#TRPBF at G = 100?
At G = 100, the small-signal output resistance of the LTC6910-1ITS8#TRPBF is 30 Ω, measured under DC conditions with VS = 5 V. This value increases with gain setting (e.g., 15 Ω at G = 50, 6.4 Ω at G = 20) and impacts drive capability into low-impedance loads. For optimal performance into 500 Ω loads, the LTC6910-1ITS8#TRPBF maintains rail-to-rail swing within 160 mV of each rail at VS = 5 V, as specified in its Electrical Characteristics table.
Does the LTC6910-1ITS8#TRPBF require external compensation capacitors?
No, the LTC6910-1ITS8#TRPBF is internally compensated and requires no external compensation capacitors. Its gain-bandwidth product (11 MHz) and phase margin are factory-optimized for stability across all eight gain settings and supply voltages (2.7 V to 10.5 V). Layout best practices-such as placing a 0.1 µF ceramic decoupling capacitor close to the V+ pin and routing AGND with low inductance-are sufficient; the LTC6910-1ITS8#TRPBF datasheet confirms unconditional stability in standard configurations.
LTC6910-1ITS8#TRPBF 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:
- 11 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
LTC6910-1ITS8#TRPBF FAQ
1.How can I place an order for LTC6910-1ITS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6910-1ITS8#TRPBF 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 LTC6910-1ITS8#TRPBF reliable?
The price and inventory of LTC6910-1ITS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6910-1ITS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6910-1ITS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6910-1ITS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6910-1ITS8#TRPBF?
LTC6910-1ITS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6910-1ITS8#TRPBF 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 LTC6910-1ITS8#TRPBF?
For technical support, including LTC6910-1ITS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6910-1ITS8#TRPBF requirements.
6.How does Aetrix verify that LTC6910-1ITS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6910-1ITS8#TRPBF 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 LTC6910-1ITS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6910-1ITS8#TRPBF?
All LTC6910-1ITS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6910-1ITS8#TRPBF, 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 LTC6910-1ITS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC6910-1ITS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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