SN761643DGKR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN761643DGKR is an automatic gain control (AGC) amplifier IC packaged in a small outline package for space-efficient PCB integration. It delivers automatic signal level adjustment across a wide dynamic range for audio and communications applications. Available from authorized distributors with in-stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- SN761643DGKR Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN761643DGKR?
- Automatic gain control (AGC) amplifier providing dynamic signal level regulation across a wide input range
- Small outline package (SOT/SOIC) enabling compact PCB integration in space-constrained audio and communications designs
- Optimized for AM/FM radio receiver and audio signal chain applications requiring stable output levels despite varying input amplitudes
What is SN761643DGKR used for?
The SN761643DGKR AGC amplifier is used in AM/FM radio receivers, portable audio equipment, and communication systems where automatic signal level control is needed to maintain consistent output amplitude despite varying input levels. Its small outline package makes it suitable for compact consumer electronics such as tuner modules, car radios, and handheld communication devices.
What are the specifications of SN761643DGKR?
| Pbfree Code | No |
| YTEOL | 0 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the SN761643DGKR datasheet?
SN761643DGKR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN761643DGKR?
Compatible alternatives and drop-in replacements for SN761643DGKR:
Frequently Asked Questions
What function does the SN761643DGKR perform in a radio receiver signal chain?
The SN761643DGKR is an automatic gain control (AGC) amplifier that dynamically adjusts signal gain to maintain a stable output level across widely varying input signal amplitudes. In AM/FM radio receivers, it prevents overload on strong signals while boosting weak ones, typically operating across a dynamic control range of 40 dB or more to ensure consistent audio output quality.
Which package type does SN761643DGKR use, and how does it affect PCB layout?
The SN761643DGKR is housed in a small outline package (SSOP or SOIC-style), which allows a compact PCB footprint suitable for dense consumer electronics layouts. The small outline package typically occupies less than 30 mm² of board area, enabling multi-function radio ICs to be placed close together to minimize parasitic signal path lengths in the 10 MHz to 100 MHz frequency range.
When should a designer choose SN761643DGKR over a fixed-gain amplifier in audio designs?
A designer should select the SN761643DGKR AGC amplifier when the input signal strength varies significantly, such as in portable AM/FM radios or wireless receivers where received signal power can span a 60 dB dynamic range. The automatic gain control eliminates the need for manual volume adjustments caused by signal fading, maintaining output levels within a few dB of the target amplitude without external control circuitry.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit