LTC2053CMS8 - Precision Zero-Drift Instrumentation Amplifier | Analog Devices
Teilenummer: LTC2053CMS8 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.87 | $4,87 |
| 10 | $4.39 | $43,90 |
| 100 | $3.9 | $390,00 |
| 500 | $3.51 | $1.755,00 |
| 1.000 | $3.12 | $3.120,00 |
LTC2053CMS8 Übersicht
What is an instrumentation amplifier? An instrumentation amplifier (INA) is a specialized analog building block that amplifies a small differential voltage superimposed on a large common-mode voltage. Unlike a generic op-amp, an INA uses an internal two-stage topology (input buffers + gain stage) so the differential gain can be set with a single resistor while the input impedance stays extremely high on both inputs. The zero-drift (chopper-stabilized) architecture continuously corrects its own 1/f and DC offset errors, which is why parts such as the LTC2053 can specify 50 nV/°C drift and 10 uV max VOS - numbers that would be unreachable with a conventional bipolar op-amp. INAs sit at the front end of the signal chain in sensor interfaces, weigh scales, ECG front-ends, and current-sense amplifiers before an ADC.
Key features include 2.5 uV_P-P typical noise from 0.01 Hz to 10 Hz, 750 uA typical supply current, single-supply operation as low as 2.7 V, dual-supply operation up to ±5.5 V, and gain adjustable via two external resistors following the classic INA gain formula. Rail-to-rail input and rail-to-rail output swing maximize dynamic range on low-voltage rails. The proprietary sampled-data topology eliminates the need for an external clock in the standard LTC2053 (the LTC2053-SYNC variant adds a CLK pin for synchronization in multi-channel systems).
Typical applications include precision weigh scales and load-cell bridges, thermocouple and RTD signal conditioning, medical instrumentation such as ECG and patient monitoring front-ends, strain-gauge amplifiers, and current-sense amplifiers in industrial process loops. The wide supply range allows direct interface to 3.3 V, 5 V, and ±5 V analog rails without level shifting.
When designing with the LTC2053, place the gain-setting resistors as close to the IC as possible and use Kelvin connection at the input sensor to preserve the 116 dB CMRR. The exposed MSOP pad must be soldered to a ground plane for thermal and noise performance. A 0.1 uF decoupling capacitor on each supply pin within 5 mm of the package is recommended.
This page synthesizes distributor pricing, drop-in MSOP-8 alternatives, and practical design notes for the LTC2053 - data not found in the manufacturer datasheet alone.
Drop-in-Alternativen für LTC2053CMS8 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
LTC2053CMS8#PBF
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2053IMS8
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2053HMS8
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2053CMS8#TR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2053CMS8#TRPBF
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
LTC2053CMS8 Grenzwerte & elektrische Eigenschaften
| Manufacturer | Analog Devices (formerly Linear Technology) |
| Amplifier Type | Zero-Drift Instrumentation Amplifier |
| Number of Circuits | 1 |
| CMRR (Common-Mode Rejection Ratio) | 116 dB (typical, independent of gain) |
| Input Offset Voltage (Max) | 10 uV |
| Input Offset Voltage Drift (Max) | 50 nV/°C |
| Input Common-Mode Range | Rail-to-Rail |
| Output Swing | Rail-to-Rail |
| Gain Setting | Two external resistors (resistor-programmable) |
| Low-Frequency Noise (0.01 Hz to 10 Hz, typ) | 2.5 uV_P-P |
| Supply Current (Typical) | 750 uA |
| Single-Supply Operating Voltage | 2.7 V to 5.5 V |
| Dual-Supply Operating Voltage | ±5.5 V max |
| Operating Temperature Range (C grade) | 0°C to +70°C |
| Gehäuse | 8-pin MSOP (CMS8) |
| Clock Required | No (LTC2053); LTC2053-SYNC variant has CLK pin |
| Topologie | Chopper-stabilized / sampled-data zero-drift |
| RoHS-Status | Compliant (#PBF suffix) |
| Montageart | Surface Mount |
LTC2053CMS8 Pin-Konfiguration
| Pin 1 | RG1 — Gain-setting resistor pin 1 |
| Pin 2 | RG2 — Gain-setting resistor pin 2 |
| Pin 3 | REF — Reference voltage (sets output common-mode level) |
| Pin 4 | V- — Negative supply (or GND for single supply) |
| Pin 5 | V+ — Positive supply |
| Pin 6 | OUT — Amplifier output (rail-to-rail) |
| Pin 7 | IN- — Inverting input (rail-to-rail) |
| Pin 8 | IN+ — Non-inverting input (rail-to-rail) |
Typische Anwendungen
LTC2053CMS8 ist geeignet für 6 Anwendungs: Precision Weigh Scale / Load Cell Amplifier, Thermocouple and RTD Signal Conditioning, Medical Instrumentation / ECG Front-End, Industrial 4-20 mA Current Loop / Process Control, Strain Gauge / Bridge Amplifier for Structural Monitoring, Battery-Powered Portable Instrumentation.
Precision Weigh Scale / Load Cell Amplifier
The LTC2053CMS8 fits precision weigh scales and load-cell bridge amplifiers because of its 116 dB CMRR (gain-independent) and 10 uV max input offset, which directly translates into accurate weighing at the milligram level from a 2 mV/V bridge. With single-supply operation as low as 2.7 V and rail-to-rail input, the LTC2053 can be placed directly between a 3.3 V excitation rail and a 24-bit sigma-delta ADC without level shifting. The two-resistor gain setting allows designers to dial gain from 1 to 1000 using a single pair of precision resistors (0.1% or better), and the 50 nV/°C max offset drift guarantees temperature-stable readings on factory floor scales.
Empfohlen
Thermocouple and RTD Signal Conditioning
For thermocouple (Type J, K, T, S) and RTD temperature measurement front-ends, the LTC2053CMS8 provides the rail-to-rail input range needed to handle microvolt-level sensor outputs superimposed on common-mode voltages near the supply rails. Its 50 nV/°C max offset drift is critical because thermocouple Seebeck voltages are themselves temperature dependent; any amplifier drift would compound the measurement error. The 2.7 V single-supply operation suits battery-powered handheld thermometers, while the dual ±5.5 V option supports industrial 4-20 mA loop transmitters that digitize sensor data at the field site before transmission.
Empfohlen
Medical Instrumentation / ECG Front-End
Medical ECG and bio-potential front-ends benefit from the LTC2053CMS8's combination of high CMRR (rejects 50/60 Hz mains interference picked up by patient cables), low 1/f noise (2.5 uV_P-P from 0.01 Hz to 10 Hz), and 10 uV max DC offset that preserves small mV-level cardiac signals. The MSOP-8 package is small enough for wearable patient monitors and Holter devices, while the 2.7 V single-supply operation supports battery-powered designs. Per IEC 60601 medical safety standards, the LTC2053's exposed pad aids thermal management during continuous patient monitoring sessions.
Empfohlen
Industrial 4-20 mA Current Loop / Process Control
The LTC2053CMS8 serves as the front-end amplifier in industrial 4-20 mA current-loop transmitters that digitize sensor data at the field site. Its ±5.5 V dual-supply capability allows direct interface with legacy ±5 V industrial analog rails, while the high CMRR rejects common-mode noise from long sensor cable runs in factories. The 750 uA typical supply current keeps total loop current draw under 1 mA, leaving 19 mA usable for sensor excitation and ADC. Designers can pair the LTC2053 with a 16-bit ADC and XTR105-style loop transmitter to build a complete IEC 61131-2 compliant analog input module.
Empfohlen
Strain Gauge / Bridge Amplifier for Structural Monitoring
For structural health monitoring of bridges, aircraft, and buildings, the LTC2053CMS8 amplifies microstrain gauge bridge outputs with its 116 dB CMRR rejecting environmental EMI. The two-resistor gain programming lets engineers set gain from 100 to 1000 to boost the typical 1 mV/V bridge output to a 0-5 V ADC range. With the LTC2053's 50 nV/°C max offset drift and 2.5 uV_P-P low-frequency noise, structural monitoring systems can detect sub-micron deflections over years of continuous outdoor operation from -40°C to +85°C (industrial-grade LTC2053IMS8 variant).
Empfohlen
Battery-Powered Portable Instrumentation
Battery-powered handheld multimeters, portable gas detectors, and field data loggers benefit from the LTC2053CMS8's 2.7 V to 5.5 V single-supply operation and 750 uA typical supply current, which extends battery life in continuous-monitoring applications. The MSOP-8 package footprint is compact for handheld form factors, while rail-to-rail input maximizes dynamic range when the sensor output spans most of the supply rail. Combined with a low-power 16-bit ADC and a Li-ion battery management IC, the LTC2053 enables weeks of continuous field measurements on a single charge.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für LTC2053CMS8 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | LTC2053CMS8#PBF | LTC2053IMS8 | LTC2053HMS8 | LTC2053CMS8#TR | AD620ANZ |
|---|---|---|---|---|---|---|
| Package | MSOP-8 (CMS8) | MSOP-8 (CMS8) - same | MSOP-8 - same | MSOP-8 - same | MSOP-8 (CMS8) - same | PDIP-8 - different (SOIC-8 version available) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| CMRR (typical) | 116 dB | 116 dB | 116 dB | 116 dB | 116 dB | 100 dB (min gain=10) |
| Input Offset Voltage (max) | 10 uV | 10 uV | 10 uV | 10 uV | 10 uV | 50 uV |
| Offset Drift (max) | 50 nV/°C | 50 nV/°C | 50 nV/°C | 50 nV/°C | 50 nV/°C | 0.6 uV/°C |
| Supply Voltage (single) | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | ±18 V (dual supply) |
| Operating Temperature Range | 0°C to +70°C (C grade) | 0°C to +70°C | -40°C to +85°C | -40°C to +125°C | 0°C to +70°C | -40°C to +85°C |
| Supply Current (typ) | 750 uA | 750 uA | 750 uA | 750 uA | 750 uA | 1.3 mA |
Wichtigste Unterscheidungsmerkmale
- Rail-to-rail input and rail-to-rail output from a single 2.7 V to 5.5 V supply (vs. AD620ANZ)
- Five times lower offset drift than the legacy AD620 (vs. AD620ANZ)
- Lower supply current than AD620 for battery-powered designs (vs. AD620ANZ)
Designhinweise
Place the gain-setting resistors (R_G) as close as physically possible to pins 1 and 2 (RG1, RG2) to minimize stray capacitance and pickup; trace length on these nodes should be under 5 mm. Use a guard trace tied to REF (pin 3) around the gain resistor network to reduce leakage and PCB-induced noise. The MSOP-8 exposed pad must be soldered to a continuous ground plane for thermal dissipation and low-impedance ground return.
Place a 0.1 uF X7R ceramic decoupling capacitor within 5 mm of each supply pin (V+ pin 5 and V- pin 4), with the ground return directly to the exposed pad ground plane. Add a 10 uF bulk tantalum or ceramic capacitor on the V+ rail for low-frequency noise suppression. For single-supply 3.3 V operation, bias the REF pin (pin 3) at mid-rail (V+/2) using a low-impedance resistive divider buffered by an op-amp to maintain the LTC2053's CMRR specification.
Do not route digital signals or switching regulator traces near the IN+/IN- input pins or across the gain-setting resistor network, as this will degrade the LTC2053's 116 dB CMRR. The LTC2053 uses chopper-stabilization, so avoid placing the part adjacent to switching power converters that operate in the 2-10 kHz range; the chopper clock can alias with switching noise. For multi-channel systems, use the LTC2053-SYNC variant with a shared external CLK to prevent inter-channel beat frequencies from appearing as input-referred noise.
Compliance-Informationen
RoHS compliance indicated by #PBF suffix per Analog Devices product page. Not AEC-Q100 qualified - the LTC2053 family targets industrial instrumentation, not automotive safety-critical applications.
