| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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5,245 pcs
|
5245 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Data Interface | |
| Dynamic Range, ADCs | |
| Lead Spacing | |
| Mounting Type | |
| Number of ADCs | |
| Operating Temperature | |
| Resolution (Bits) | |
| Sigma Delta | |
| Supplier Device Package | |
| Supplier Package | |
| Tape & Reel | |
| Type | |
| Voltage |
The LM4550BVH/NOPB from Texas Instruments is an AC '97 Rev 2.1 compliant audio codec designed for PC systems. It performs essential analog functions within the AC '97 architecture, utilizing 18-bit Sigma-Delta ADCs and DACs to achieve a dynamic range of 90 dB for ADCs and 89 dB for DACs. This device supports up to 6 DAC channel systems and includes features like sample rate conversion from 4 kHz to 48 kHz, a stereo headphone amplifier with separate gain control, and TI's 3D Sound stereo enhancement circuitry.
With a surface mountable 48-LQFP package, the LM4550BVH/NOPB operates within an extended temperature range of -40°C to 85°C and supports digital supply voltages of 3.3V and 5V. It also offers advanced power management with External Amplifier Power-Down (EAPD) control and PC Beep Passthrough to Line Out functionality. The device is suitable for applications requiring a high-quality audio path and comprehensive analog functionality in PC audio systems.
Key electrical specifications include an analog mixer dynamic range of 97 dB (typical), DAC dynamic range of 89 dB (typical), and ADC dynamic range of 90 dB (typical). The headphone amplifier exhibits a THD+N of 0.02% (typical) into 32 Ohms at 50 mW. The data interface is serial, and it supports multiple LM4550Bs or other TI LM45xx codecs through a unique TI chaining function.
| Qty | Low | High |
|---|---|---|
| 1+ | $4.64 | $4.64 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage for the LM4550BVH/NOPB is between 4.2V and 5.5V.
The LM4550BVH/NOPB comes in a 48-LQFP package.
The operating temperature range for the LM4550BVH/NOPB is -40°C to 85°C.
The LM4550BVH/NOPB has a resolution of 18 bits.
The typical dynamic range for the ADCs on the LM4550BVH/NOPB is 90 dB.
Yes, the LM4550BVH/NOPB supports sample rate conversion from 4 kHz to 48 kHz in 1 Hz increments.
The LM4550BVH/NOPB offers digital supply voltage options of 3.3V and 5V.