LT1637 - 1.1MHz, 0.4V/us Over-The-Top Micropower, Rail-To-Rail Input and Output Op Amp
Features
- Operates with Inputs Above V +
- Rail-to-Rail Input and Output
- Micropower: 250µA Supply Current Max
- Operating Temperature Range: - 55°C to 125°C
- Gain-Bandwidth Product: 1.1MHz
- Slew Rate: 0.4V/µs
- Low Input Offset Voltage: 350µV Max
- Single Supply Input Range: - 0.4V to 44V
- High Output Current: 25mA Min
- Specified on 3V, 5V and ±15V Supplies
- Output Shutdown
- Output Drives 4700pF with Output Compensation
- Reverse Battery Protection to 25V
- High Voltage Gain: 800V/mV
- High CMRR: 110dB
- Available in 8-Lead MSOP, PDIP and SO Packages; and a Tiny (3mm × 3mm × 0.8mm) DFN Package
AEC-Q100 data available for specific packages
Typical Application
Description
The LT1637 is a rugged op amp that operates on all single and split supplies with a total voltage of 2.7V to 44V. The LT1637 has a gain-bandwidth product of 1.1MHz while drawing less than 250µA of quiescent current. The LT1637 can be shut down, making the output high impedance and reducing the quiescent current to only 3µA. The LT1637 is reverse supply protected: it draws virtually no current for reverse supply up to 25V. The input range of the LT1637 includes both supplies and the output swings to both supplies. Unlike most micropower op amps, the LT1637 can drive heavy loads; its rail-to-rail output drives 25mA. The LT1637 is unity-gain stable into all capacitive loads up to 4700pF when optional 0.22µF and 150 Ohm compensation is used.
The LT1637 has a unique input stage that operates and remains high impedance when above the positive supply. The inputs take 44V both differential and common mode, even when operating on a 3V supply. Built-in resistors protect the inputs for faults below the negative supply up to 22V. There is no phase reversal of the output for inputs 5V below VEE or 44V above VEE, independent of VCC.
The LT1637 op amp is available in the 8-pin MSOP, PDIP and SO packages. For space limited applications, the LT1637 is available in a 3mm × 3mm × 0.8mm dual fine pitch leadless package (DFN).
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT1637CDD#PBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LT1637CDD#TRPBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LT1637CMS8#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LT1637CMS8#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LT1637CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LT1637CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1637CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1637HS8#PBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |
| LT1637HS8#TRPBF | SO-8 | S8 | H | 05-08-1610 (S8) | Yes |
| LT1637IDD#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LT1637IDD#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LT1637IMS8#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LT1637IMS8#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LT1637IN8#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |
| LT1637IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LT1637IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LT1637MPS8 | SO-8 | S8 | MP | 05-08-1610 (S8) | No |
| LT1637MPS8#PBF | SO-8 | S8 | MP | 05-08-1610 (S8) | Yes |
| LT1637MPS8#TR | SO-8 | S8 | MP | 05-08-1610 (S8) | No |
| LT1637MPS8#TRPBF | SO-8 | S8 | MP | 05-08-1610 (S8) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT1637CDD#PBF | 3x3 DFN-8 | C | $2.59 | $1.80 | Yes | |
| LT1637CDD#TRPBF | 3x3 DFN-8 | C | $1.85 | Yes | ||
| LT1637CMS8#PBF | MS-8 | C | $2.00 | $1.70 | Yes | |
| LT1637CMS8#TRPBF | MS-8 | C | $1.76 | Yes | ||
| LT1637CN8#PBF | N-8 | C | $1.70 | $1.45 | Yes | |
| LT1637CS8#PBF | SO-8 | C | $1.75 | $1.50 | Yes | |
| LT1637CS8#TRPBF | SO-8 | C | $1.56 | Yes | ||
| LT1637HS8#PBF | SO-8 | H | $2.02 | $1.75 | Yes | |
| LT1637HS8#TRPBF | SO-8 | H | $1.81 | Yes | ||
| LT1637IDD#PBF | 3x3 DFN-8 | I | $3.11 | $2.16 | Yes | |
| LT1637IDD#TRPBF | 3x3 DFN-8 | I | $2.21 | Yes | ||
| LT1637IMS8#PBF | MS-8 | I | $2.67 | $1.87 | Yes | |
| LT1637IMS8#TRPBF | MS-8 | I | $1.93 | Yes | ||
| LT1637IN8#PBF | N-8 | I | $1.90 | $1.60 | Yes | |
| LT1637IS8#PBF | SO-8 | I | $1.95 | $1.65 | Yes | |
| LT1637IS8#TRPBF | SO-8 | I | $1.71 | Yes | ||
| LT1637MPS8 | SO-8 | MP | No | |||
| LT1637MPS8#PBF | SO-8 | MP | $6.47 | $4.58 | Yes | |
| LT1637MPS8#TR | SO-8 | MP | No | |||
| LT1637MPS8#TRPBF | SO-8 | MP | $6.47 | $4.58 | Yes | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC417B | DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp | $25.00 | |
| DC593A | LT1637CDD | Over-The-Top, Micropower, Rail-to-Rail Input and Output Op Amp in DFN Package | $50.00 | |
| Buy Now | |||
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT1637HS8#PBF | SO-8 | H | $2.02 | $1.75 | Yes | |
| LT1637HS8#TRPBF | SO-8 | H | $1.81 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Battery or Solar Powered Systems:
Portable Instrumentation
Sensor Conditioning - Supply Current Sensing
- Battery Monitoring
- MUX Amplifiers
- 4mA to 25mA Transmitters
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Design Tools
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Technical Support
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- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
