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Analog Devices Inc. LTC6911IMS-1#TRPBF
- Part No.:
- LTC6911IMS-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6911IMS-1#TRPBF.pdf
- Description:
- IC OPAMP PGA 2 CIRCUIT 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,755
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Product details
Overview
LTC6911IMS-1#TRPBF from Analog Devices (formerly Linear Technology) is a dual-channel, inverting, digitally programmable gain amplifier (PGA) with 3-bit parallel gain control. It delivers precise inverting gains of 0, 1, 2, 5, 10, 20, 50, and 100 V/V, rail-to-rail input/output operation, 11 MHz gain-bandwidth product, and channel-to-channel gain matching ≤0.1 dB. It is used in high-precision data acquisition systems requiring dynamic range optimization and matched signal paths.
For engineers reviewing the LTC6911IMS-1#TRPBF datasheet, LTC6911IMS-1#TRPBF pinout, LTC6911IMS-1#TRPBF application, or LTC6911IMS-1#TRPBF equivalent, key selection considerations include its MSOP-10 package, ±100 V/V inverting gain range, 10 nV/√Hz input voltage noise at 50 kHz, 120 dB total system dynamic range, and guaranteed performance over –40°C to 85°C.
Technical Context
The LTC6911IMS-1#TRPBF integrates two fully matched, MOS-input operational amplifiers with digitally controlled resistor arrays for gain setting. Its architecture uses internal current-summing nodes referenced to AGND, enabling true rail-to-rail input operation at unity gain and maintaining precision across all eight gain states.
Gain is selected via three logic inputs (G0–G2), supporting synchronous updates without glitches. The device generates its own half-supply reference at AGND, eliminating external biasing in single-supply configurations and ensuring stable common-mode operation across 2.7 V to 10.5 V total supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | Inverting gains of 0, 1, 2, 5, 10, 20, 50, 100 V/V - enables precise signal scaling without external resistors |
| Gain Bandwidth Product | 11 MHz at G = 100 - supports wideband signal conditioning up to ~110 kHz at G = 100 |
| Input Voltage Noise | 10 nV/√Hz at 50 kHz - ensures low-noise amplification of microvolt-level sensor signals |
| Channel Matching | ≤0.1 dB gain mismatch - critical for differential or dual-path measurement accuracy |
| Supply Range | 2.7 V to 10.5 V total - operates from single 3.3 V/5 V or dual ±5 V supplies |
| Dynamic Range | 120 dB system-level - achieved via low offset (2 mV @ G=10), low noise, and rail-to-rail swing |
| Operating Temp | –40°C to +85°C - qualified for industrial and embedded environments |
Pinout & Package
Package: 10-Lead MSOP (3 mm × 3 mm, 0.5 mm pitch), moisture sensitivity level 1, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INA) | Channel A analog input | Differential input referenced to AGND; impedance varies with gain (10 kΩ @ G=1, 1 kΩ @ G=100) |
| 2 (AGND) | Analog ground reference | Internally generated mid-supply reference; serves as DC common-mode for both inputs/outputs |
| 3 (INB) | Channel B analog input | Matched to INA; identical gain and impedance behavior |
| 4 (G0) | LSB digital gain control | CMOS-compatible logic input; defines gain bit 0 (0 = low, 1 = high) |
| 5 (G1) | Mid digital gain control | CMOS-compatible logic input; defines gain bit 1 |
| 6 (G2) | MSB digital gain control | CMOS-compatible logic input; defines gain bit 2 |
| 7 (OUTA) | Channel A amplified output | Rail-to-rail output; inverted and scaled version of INA–AGND |
| 8 (OUTB) | Channel B amplified output | Matched to OUTA; synchronized gain response and phase |
| 9 (V–) | Negative supply | Connect to ground (single supply) or negative rail (dual supply); powers internal circuitry |
| 10 (V+) | Positive supply | Accepts 2.7 V to 10.5 V total supply; powers op-amps and logic interface |
Key Features
| Feature | Design Value |
|---|---|
| Dual matched PGA channels | Guaranteed ≤0.1 dB inter-channel gain mismatch ensures consistent scaling across signal paths |
| Rail-to-rail input/output | Supports full-supply-swing signals at unity gain; eliminates need for level-shifting circuitry |
| Internal AGND reference | Self-generates stable mid-supply bias-no external resistor divider required for single-supply use |
| Low 10 nV/√Hz input noise | Enables high-fidelity amplification of low-amplitude sensor outputs without degrading SNR |
| 120 dB system dynamic range | Combines low offset (2 mV @ G=10), low noise, and wide output swing for precision measurement |
Applications
| Medical Instrumentation | Industrial Data Acquisition |
|---|---|
Use Scenario: Amplifying low-level biopotential signals (ECG, EEG) with adaptive gain to maintain resolution across varying patient impedances. IC Role / Device Role / Timing Role: Dual-channel inverting PGA providing matched, noise-optimized gain scaling before ADC sampling. Use Value: 120 dB dynamic range and ≤0.1 dB channel matching preserve differential signal integrity and reduce calibration overhead. | Use Scenario: Conditioning sensor outputs (strain gauges, RTDs) in PLC analog input modules with automatic ranging. IC Role / Device Role / Timing Role: Digitally reconfigurable front-end amplifier enabling software-selectable full-scale ranges per channel. Use Value: Eliminates external gain-switching relays or multiplexers; reduces board area and improves long-term drift stability. |
| Automated Test Equipment | Communications Signal Chain |
Use Scenario: Programmable gain stages in multi-channel waveform digitizers requiring synchronized, glitch-free gain changes during acquisition. IC Role / Device Role / Timing Role: Dual PGA delivering simultaneous, identical gain updates across two signal paths using parallel G0–G2 control. Use Value: 3-bit parallel interface enables deterministic timing; no serial latency or clock skew between channels. | Use Scenario: IF signal amplification in broadband receivers where gain must be adjusted dynamically to handle varying input power levels. IC Role / Device Role / Timing Role: Low-noise, wideband inverting amplifier supporting up to 11 MHz GBW for baseband-to-IF conditioning. Use Value: 10 nV/√Hz input noise and –90 dB THD at 10 kHz ensure minimal distortion in sensitive RF receiver chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6911IMS-2#TRPBF | Offers binary gain steps: 0, 1, 2, 4, 8, 16, 32, 64 V/V instead of 0, 1, 2, 5, 10, 20, 50, 100 V/V | Better suited for applications requiring exact power-of-two scaling (e.g., digital gain control loops) | Select LTC6911IMS-2#TRPBF when binary progression simplifies firmware gain mapping or matches DSP coefficient sets |
| AD8253ARMZ | Single-channel, SPI-controlled PGA with gains 1/2/4/8/16/32/64/128 V/V; higher max gain but no dual-channel match spec | Lacks guaranteed channel-to-channel matching; requires serial interface and additional decoupling | Choose AD8253ARMZ only when SPI control is preferred and dual-channel matching is not required |
Compared with LTC6911IMS-2#TRPBF and AD8253ARMZ, the LTC6911IMS-1#TRPBF uniquely provides dual-channel matching ≤0.1 dB and non-binary gain values (5, 10, 20, 50, 100) ideal for legacy analog scaling and calibrated instrumentation systems.
Availability
LTC6911IMS-1#TRPBF is available at Aetrix Electronics and suitable for medical instrumentation, industrial data acquisition, and automated test equipment requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature operation.
Supply support for LTC6911IMS-1#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC6911 family was designed by Linear Technology (acquired by ADI in 2017) specifically for precision, low-noise, dual-channel programmable gain applications in space-constrained, high-dynamic-range measurement systems.
FAQ
What gain settings does the LTC6911IMS-1#TRPBF support?
The LTC6911IMS-1#TRPBF supports eight inverting voltage gain settings: 0, 1, 2, 5, 10, 20, 50, and 100 V/V, selected via the 3-bit parallel interface (G0–G2). Gain = 0 disconnects the input and forces the output to AGND potential. All gains are inverting and specified over the full –40°C to +85°C operating range.
How does the AGND pin function in the LTC6911IMS-1#TRPBF?
The AGND pin on the LTC6911IMS-1#TRPBF is an internally generated mid-supply reference voltage-not a ground connection. It serves as the common-mode reference for both inputs and outputs. In single-supply operation, it eliminates the need for external bias networks, and all input/output voltages are defined relative to this node, enabling true rail-to-rail functionality.
Is the LTC6911IMS-1#TRPBF pin-compatible with other variants in the LTC6911 family?
Yes, the LTC6911IMS-1#TRPBF is pin-compatible with all MSOP-packaged LTC6911 variants (e.g., LTC6911IMS-2#TRPBF, LTC6911CMS-1), sharing identical 10-pin MSOP footprint, pinout, and supply requirements. Only the gain table differs between -1 and -2 versions; no PCB layout change is needed when substituting within the same package grade.
What is the maximum linear input voltage range for the LTC6911IMS-1#TRPBF at G = 100?
At G = 100 and VS = 5 V, the maximum linear input voltage range (VP-P) for the LTC6911IMS-1#TRPBF is 0.03 V (30 mVP-P), centered around AGND. This value scales inversely with gain-e.g., at G = 1, the linear input range is 3 VVP-P. Exceeding this range causes clipping due to internal node limitations, not rail saturation.
Does the LTC6911IMS-1#TRPBF require external compensation or filtering?
No, the LTC6911IMS-1#TRPBF is internally compensated and stable for all gain settings without external components. However, a ≥1 µF bypass capacitor on V+ and 0.1 µF on AGND are mandatory per the datasheet to ensure PSRR performance and prevent oscillation under heavy capacitive loads or noisy supply conditions.
LTC6911IMS-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Programmable Gain
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 16V/µs
- Gain Bandwidth Product:
- 11 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 3.1mA (x2 Channels)
- 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:
- 10-MSOP
LTC6911IMS-1#TRPBF FAQ
1.How can I place an order for LTC6911IMS-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6911IMS-1#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 LTC6911IMS-1#TRPBF reliable?
The price and inventory of LTC6911IMS-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6911IMS-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6911IMS-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6911IMS-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6911IMS-1#TRPBF?
LTC6911IMS-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6911IMS-1#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 LTC6911IMS-1#TRPBF?
For technical support, including LTC6911IMS-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6911IMS-1#TRPBF requirements.
6.How does Aetrix verify that LTC6911IMS-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6911IMS-1#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 LTC6911IMS-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6911IMS-1#TRPBF?
All LTC6911IMS-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6911IMS-1#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 LTC6911IMS-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC6911IMS-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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