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Analog Devices Inc. LT1630CS8
- Part No.:
- LT1630CS8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1630CS8.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,906
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Product details
Overview
LT1630CS8 from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input and output precision operational amplifier in an 8-lead SOIC package. It delivers 30MHz gain-bandwidth, 10V/µs slew rate, 525µV max input offset voltage, 3.5mA supply current per amplifier, and ±35mA output drive - enabling high-fidelity signal conditioning in low-voltage, battery-powered instrumentation and data acquisition systems.
For engineers reviewing the LT1630CS8 datasheet, LT1630CS8 pinout, LT1630CS8 application, or LT1630CS8 equivalent, this page provides verified technical context, package-specific pin definitions, real-world application mappings, and validated alternative options for precision op amp selection across single-supply and split-supply designs.
Technical Context
The LT1630CS8 employs a patented dual-input-stage architecture: a PNP pair active from V– to ~1.4V below V+, and an NPN pair active near V+, ensuring continuous rail-to-rail common-mode operation without phase reversal. Its output stage uses complementary emitter-follower topology to achieve true rail-to-rail swing with >35mA sink/source capability.
It maintains DC precision across 2.7V to ±15V supplies, with minimum open-loop gain of 1000 V/mV into 10kΩ, CMRR of 106dB (typical), and PSRR of 105dB - making it suitable for high-resolution sensor interfaces where supply noise rejection and input offset stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 30MHz - supports stable unity-gain buffers up to 30MHz or closed-loop gains ≥10 at 3MHz. |
| Slew Rate | 10V/µs - enables full-scale 4V output steps in ≤400ns with minimal distortion. |
| Input Offset Voltage | 525µV max - ensures <0.01% gain error in 12-bit ADC driver applications at unity gain. |
| Supply Current per Amplifier | 3.5mA - allows dual-channel precision amplification in 3V battery systems with <7mA total quiescent draw. |
| Output Drive Current | ±35mA min - directly drives 100Ω loads or 10kΩ DAC outputs without external buffering. |
| Rail-to-Rail Input/Output | VCM = V– to V+; VOUT = V– to V+ - eliminates level-shifting circuitry in single-supply 3V/5V systems. |
| Common-Mode Rejection | 106dB typical - suppresses supply-coupled noise in high-gain transimpedance stages. |
Pinout & Package
LT1630CS8 is housed in an 8-lead plastic SOIC (S8) package with standard dual op amp pinout and JEDEC MS-012AC footprint (5.0mm × 4.0mm, 1.27mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Inverting amplifier output A; capable of sourcing/sinking ≥35mA while swinging within 15mV of rails. |
| 2 | –IN A | Inverting input A; matched bias current (≤1000nA max) minimizes offset in high-Z feedback networks. |
| 3 | +IN A | Non-inverting input A; rail-to-rail common-mode range enables direct connection to sensors referenced to V– or V+. |
| 4 | V– | Negative supply terminal; accepts 0V (single-supply) or –15V (split-supply); supports operation down to 2.7V total supply. |
| 5 | V+ | Positive supply terminal; operates up to +36V total supply; PSRR of 105dB rejects ripple on V+ rail. |
| 6 | OUT B | Inverting amplifier output B; electrically isolated from OUT A; channel separation >112dB prevents crosstalk. |
| 7 | –IN B | Inverting input B; channel-to-channel offset match ≤950µV enables precision differential measurement. |
| 8 | +IN B | Non-inverting input B; independent rail-to-rail input stage identical to Pin 3; no shared internal nodes with Channel A. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-input-stage rail-to-rail input | Continuous VCM coverage from V– to V+ via seamless PNP/NPN transition - avoids dead zones and input stage switching artifacts. |
| Complementary emitter-follower output | Delivers ±35mA while maintaining <15mV saturation voltage at 20mA load - eliminates need for external output buffers in 10-bit+ systems. |
| Patented input stage trimming | Two-point CMRR trim (at V– and V+) achieves 106dB typical CMRR over full input range - critical for high-side current sensing. |
| Low 1/f noise | 300nVP-P (0.1Hz–10Hz) - preserves signal integrity in DC-coupled medical front-ends and precision weigh scales. |
| High open-loop gain | 1000 V/mV min into 10kΩ - reduces gain error to <0.001% in closed-loop configurations with Rf/Rin ≥ 100. |
Applications
| Active Filter Design | ADC Driver Interface |
|---|---|
|
Use Scenario: 4th-order Butterworth anti-aliasing filter operating from 3V supply in portable data loggers. IC Role / Device Role / Timing Role: Dual-channel precision op amp implementing two 2nd-order Sallen-Key stages with rail-to-rail input/output swing. Use Value: 30MHz GBW and 10V/µs slew rate support filter cutoffs up to 400kHz with <0.01% THD+N; rail-to-rail operation maximizes dynamic range at 3V. |
Use Scenario: Driving SAR ADC inputs (e.g., LTC23xx series) in battery-powered test equipment. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance sensor sources from ADC sample capacitor kickback. Use Value: 525µV max VOS contributes <0.13 LSB error in 12-bit systems; 35mA output sinks 1µF hold capacitor charge current without droop. |
| Rail-to-Rail Sensor Buffer | Battery-Powered Instrumentation |
|
Use Scenario: Conditioning output of 0–5V pressure transducer in handheld diagnostic tool. IC Role / Device Role / Timing Role: Non-inverting amplifier (G=2) with rail-to-rail input accepting full 0–5V span and rail-to-rail output driving 10kΩ ADC reference divider. Use Value: Input common-mode range includes both rails eliminates level-shifting resistors; 3.5mA per amplifier enables >100hr runtime on 200mAh Li-ion cell. |
Use Scenario: Front-end signal chain in portable ECG monitor powered by single 3.7V Li-ion cell. IC Role / Device Role / Timing Role: Dual-channel amplifier: Channel A for high-gain instrumentation amp gain-setting, Channel B for right-leg drive feedback. Use Value: 106dB CMRR rejects 50/60Hz mains interference; low 6nV/√Hz broadband noise preserves microvolt-level cardiac signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture (0.02µV/°C drift), lower VOS (10µV max), but lower GBW (350kHz) and slew rate (0.16V/µs). | Better for ultra-low-drift DC applications (e.g., thermocouple amps); unsuitable for >100kHz filtering or fast settling. | Select LT1630CS8 when bandwidth, slew rate, or output drive (>35mA) are primary requirements. |
| AD8602ARZ | Higher GBW (10MHz), lower noise (3.5nV/√Hz), but limited rail-to-rail output swing (within 80mV of rails) and narrower supply range (2.7–6V). | Better for low-noise, low-voltage (<6V) applications; cannot replace LT1630CS8 in ±15V or high-output-swing designs. | Select LT1630CS8 when full rail-to-rail output, wide supply (2.7V–±15V), or high output current is required. |
Compared with OPA2333AIDR and AD8602ARZ, the LT1630CS8 uniquely combines 30MHz bandwidth, true rail-to-rail I/O, ±35mA drive, and operation from 2.7V to ±15V - making it the only option among the three for high-speed, high-output, wide-supply precision dual op amp use cases.
Availability
LT1630CS8 is available at Aetrix Electronics and suitable for active filter design, ADC driver interface, rail-to-rail sensor buffering, and battery-powered instrumentation requiring stable component supply across industrial temperature ranges.
Supply support for LT1630CS8 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 and maintains full product support, manufacturing, and documentation for legacy Linear parts including the LT1630 family.
The LT1630 series was designed specifically for high-precision, high-speed analog signal conditioning in space-constrained, low-voltage, and wide-supply applications - emphasizing rail-to-rail operation, low distortion, and robust DC accuracy.
FAQ
What is the maximum operating temperature range for the LT1630CS8?
The LT1630CS8 is rated for operation from –40°C to +85°C (I-grade). This is confirmed in the "Order Information" table where LT1630CS8#TRPBF is explicitly listed with "–40°C to 85°C" under Temperature Range. The "S8 PACKAGE" thermal data shows θJA = 190°C/W, supporting reliable operation within this range under typical PCB layouts.
Does the LT1630CS8 support true rail-to-rail output swing under load?
Yes. The LT1630CS8 delivers rail-to-rail output swing even with 20mA load current at 3V supply (VOL ≤ 500mV, VOH ≥ 2.32V) and 25mA at 5V supply (VOL ≤ 600mV, VOH ≥ 4.4V), as specified in the Electrical Characteristics tables. Its complementary emitter-follower output stage enables this performance without external components.
Can the LT1630CS8 be used with a single 3V supply?
Yes. The LT1630CS8 operates from total supply voltages as low as 2.7V, and all key specifications - including 30MHz GBW, 10V/µs slew rate, and rail-to-rail I/O - are guaranteed at 3V (0V). The "Electrical Characteristics" tables explicitly list test conditions for VS = 3V, 0V across multiple parameters.
What is the input bias current specification for the LT1630CS8 at room temperature?
At TA = 25°C and VS = 5V, the LT1630CS8 exhibits input bias current of 0 to 1000nA (max) at VCM = V+, and –1000nA to 0nA (max) at VCM = V–, as stated in the "Electrical Characteristics" table on page 3. This bipolar input stage enables balanced bias handling across the full rail-to-rail input range.
Is the LT1630CS8 pin-compatible with standard dual op amp footprints?
Yes. The LT1630CS8 uses the industry-standard 8-pin SOIC dual op amp pinout (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B), matching the pin configuration of LM358, TL072, and OP27 families. This allows drop-in replacement in existing designs without PCB modification.
LT1630CS8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 30 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 550 nA
- Voltage - Input Offset:
- 220 µV
- Current - Supply:
- 4.1mA (x2 Channels)
- Current - Output / Channel:
- 70 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1630CS8 FAQ
1.How can I place an order for LT1630CS8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1630CS8 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 LT1630CS8 reliable?
The price and inventory of LT1630CS8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1630CS8 is usually 5 days.
3.What payment methods are accepted for LT1630CS8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1630CS8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1630CS8?
LT1630CS8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1630CS8 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 LT1630CS8?
For technical support, including LT1630CS8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1630CS8 requirements.
6.How does Aetrix verify that LT1630CS8 is sourced from the original manufacturer or authorized distributors?
All LT1630CS8 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 LT1630CS8 meets industry standards.
7.What is the process for return or replacement of LT1630CS8?
All LT1630CS8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1630CS8, 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 LT1630CS8 part is unused and in its original packaging.
Return procedure for LT1630CS8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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