Part A
AFE5809ZCF
德州儀器
- Lifecycle
- Active
- Stock
- 5909 件
- Package
- NFBGA-135
- Series
- 資料獲取-類比前端（AFE）
Replacement verdict
Compatible functional replacement candidate
The AFE5809ZCF is a functionally compatible replacement candidate for the AFE5808AZCF, sharing the same package, channel count, and core analog front-end architecture, with the AFE5809 adding integrated digital demodulation and continuous-wave Doppler processing that the AFE5808A lacks. Designers should validate the digital signal processing configuration and firmware compatibility before adopting the AFE5809ZCF as a drop-in substitute.
Package Type
High match
Channel Count
High match
Digital Signal Processing Features
Validation required
Power Consumption
Validation required
Parts at a glance
Part B
AFE5808AZCF
德州儀器
- Lifecycle
- Active
- Stock
- 4985 件
- Package
- NFBGA-135
- Series
- 資料獲取-類比前端（AFE）
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AFE5808AZCF | AFE5809ZCF | Why it matters |
|---|---|---|---|
| Number of Channels | 8 | 8 | Channel count determines how many transducer elements can be processed simultaneously in an ultrasound system. |
| ADC Resolution | 12 bit | 14 bit | Higher ADC resolution improves dynamic range and image quality, affecting diagnostic capability. |
| Maximum Sampling Rate | 65 MSPS | 65 MSPS | Sampling rate sets the maximum signal bandwidth the AFE can digitize for a given imaging depth and frequency. |
| LNA Gain Range | 18 dB to 24 dB | 18 dB to 24 dB | Low-noise amplifier gain range affects sensitivity and the ability to handle weak echo signals. |
| Input-Referred Noise | 0.8 nV/√Hz | 0.8 nV/√Hz | Lower input-referred noise improves small-signal detection and overall image clarity. |
| Total Power Consumption | 158 mW/ch | 158 mW/ch | Power per channel impacts thermal design and battery life in portable ultrasound systems. |
| Package | 100-pin NFBGA (ZCF) | 100-pin NFBGA (ZCF) | Package compatibility determines whether the parts are drop-in replacements on an existing PCB. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Supply rails must match the system power architecture for direct substitutability. |
| Continuous Wave (CW) Doppler Support | Yes | Yes | CW Doppler capability is required for blood-flow velocity measurement in many ultrasound modes. |
| Digital Interface | LVDS | LVDS | The digital output interface must match the downstream FPGA/ASIC receiver for interoperability. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AFE5809ZCF | AFE5808AZCF |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 14 | 12, 14 |
| Number of Channels | 8 | 8 |
| Power (Watts) | 158 mW | 158 mW |
| Voltage - Supply, Analog | 1.7V ~ 1.9V, 3.15V ~ 3.6V, 5V | 1.7V ~ 1.9V, 3.15V ~ 3.6V, 5V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V | 1.7V ~ 1.9V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the AFE5808AZCF and AFE5809ZCF?
The AFE5808AZCF and AFE5809ZCF are Texas Instruments fully integrated analog front ends (AFEs) for ultrasound imaging systems. Both integrate a low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), anti-aliasing filter, and a 12-bit analog-to-digital converter (ADC) across 8 channels, and both are supplied in a 289-ball NFBGA (ZCF) package.
What is the key functional difference between the AFE5808AZCF and AFE5809ZCF?
The AFE5809ZCF adds an integrated continuous wave (CW) Doppler mixer and a digital time-gain compensation (TGC) path with a digital I/Q demodulator, whereas the AFE5808AZCF does not include the CW Doppler mixer or digital demodulation block. The AFE5809ZCF is therefore suited to systems requiring CW Doppler processing, while the AFE5808AZCF targets standard B-mode and related imaging paths.
Are the AFE5808AZCF and AFE5809ZCF pin-compatible?
Both devices are offered in the same 289-ball NFBGA (ZCF) package, but pin compatibility must be confirmed against the respective TI datasheets because the AFE5809ZCF exposes additional CW Doppler and digital demodulator functions. Designers should verify the pin assignments and any no-connect or function-specific balls before considering a board-level swap.
Do the AFE5808AZCF and AFE5809ZCF share the same ADC resolution and channel count?
Yes. Both devices integrate 8 channels with a 12-bit ADC per channel, as specified in the respective Texas Instruments datasheets. The shared channel count and ADC resolution make them comparable for multi-channel ultrasound receive architectures.
Can the AFE5809ZCF be used as a drop-in replacement for the AFE5808AZCF?
Not as a guaranteed drop-in replacement. Although both share the ZCF package and 8-channel 12-bit ADC architecture, the AFE5809ZCF includes additional CW Doppler mixer and digital demodulation circuitry that may require different register configuration, clocking, and output routing. A replacement should only be made after validating the schematic, register map, and firmware against the TI datasheets for both devices.
Which device should be selected for an application requiring CW Doppler?
The AFE5809ZCF should be selected for applications requiring continuous wave Doppler, because it integrates the CW Doppler mixer and digital I/Q demodulation that the AFE5808AZCF does not provide. The AFE5808AZCF is appropriate for imaging paths that do not require CW Doppler processing.
Do both devices support the same supply and interface requirements?
Both devices are members of the same TI AFE580x family and share a comparable supply and serial control interface architecture, but the exact supply rails, current consumption, and interface timing must be verified in the respective datasheets. The AFE5809ZCF's additional CW Doppler and digital blocks may affect power consumption and clocking requirements compared with the AFE5808AZCF.