Part A
AFE5828ZAV
德州儀器
- Lifecycle
- Active
- Stock
- 3880 件
- Package
- NFBGA-289
- Series
- 資料獲取-類比前端（AFE）
Replacement verdict
Compatible functional replacement candidate
The AFE5809ZCF and AFE5828ZAV are both integrated ultrasound analog front-end (AFE) devices from Texas Instruments sharing a common architecture, supply framework, and digital interface philosophy, making the AFE5828ZAV a viable functional candidate for the AFE5809ZCF in many ultrasound receive-chain designs. However, the two parts differ in channel count, package footprint, and continuous-wave (CW) Doppler capability, so a direct drop-in substitution is not possible without layout and system-level validation.
Channel Count
Validation required
Package Type
Validation required
CW Doppler Support
Validation required
Supply Voltage
High match
Parts at a glance
Part B
AFE5809ZCF
德州儀器
- Lifecycle
- Active
- Stock
- 5909 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 | AFE5809ZCF | AFE5828ZAV | Why it matters |
|---|---|---|---|
| Number of Channels | 8 | 16 | Channel count determines how many transducer elements can be processed simultaneously, directly affecting system architecture and board layout. |
| ADC Resolution | 14 bit | 12 bit | Higher ADC resolution provides greater dynamic range and finer signal detail, which impacts image quality and small-signal detection. |
| Maximum Sampling Rate | 65 MSPS | 80 MSPS | Sampling rate limits the maximum signal bandwidth and achievable axial resolution in ultrasound receive chains. |
| Integrated CW Doppler | Yes | No | Continuous-wave Doppler support enables blood-flow velocity measurement; its absence requires external circuitry for Doppler processing. |
| Digital Demodulation / Decimation | Yes | No | On-chip demodulation reduces FPGA/processor load and data rate, simplifying the digital backend design. |
| Package | NFBGA-158 (ZCF) | NFBGA-289 (ZAV) | Package footprint and pinout affect PCB layout, thermal design, and mechanical fit; different packages are not drop-in compatible. |
| Supply Voltage (Analog) | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Supply rail requirements determine power delivery design and compatibility with existing board power architectures. |
| LNA Input-Referred Noise | 0.75 nV/√Hz | 0.8 nV/√Hz | Lower input-referred noise improves sensitivity for weak echo signals, affecting penetration depth and image clarity. |
| Time-Gain Compensation (TGC) Range | 40 dB | 40 dB | TGC range determines the ability to compensate for depth-dependent signal attenuation across the imaging field. |
| Operating Temperature Range | 0°C to 85°C | 0°C to 85°C | Temperature range confirms suitability for commercial medical imaging environments and thermal margin planning. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AFE5828ZAV | AFE5809ZCF |
|---|---|---|
| Part Status | Active | Active |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Bits | - | 14 |
| Number of Channels | - | 8 |
| Power (Watts) | - | 158 mW |
| Voltage - Supply, Analog | - | 1.7V ~ 1.9V, 3.15V ~ 3.6V, 5V |
| Voltage - Supply, Digital | - | 1.7V ~ 1.9V |
Frequently asked questions
What are the AFE5809ZCF and AFE5828ZAV?
The AFE5809ZCF and AFE5828ZAV are integrated analog front-end (AFE) devices from Texas Instruments intended for ultrasound and medical imaging signal chains. Both integrate a low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), and analog-to-digital converter (ADC) in a single package. The AFE5809ZCF is a fully integrated AFE with an on-chip continuous-wave (CW) Doppler mixer and digital demodulator, while the AFE5828ZAV is an 8-channel AFE without the CW Doppler processing block.
How do the channel counts of the AFE5809ZCF and AFE5828ZAV compare?
The AFE5809ZCF integrates 8 channels, each containing an LNA, VCA, PGA, and 14-bit ADC, plus a CW Doppler mixer per channel. The AFE5828ZAV is also an 8-channel device with the same core signal chain (LNA, VCA, PGA, 14-bit ADC) but does not include the CW Doppler mixer/demodulator. Both are therefore 8-channel AFEs; the primary architectural difference is the presence of the CW Doppler block in the AFE5809ZCF.
What is the ADC resolution and maximum sampling rate of these devices?
Both the AFE5809ZCF and AFE5828ZAV use a 14-bit ADC per channel. The AFE5809ZCF supports sampling rates up to 65 MSPS, and the AFE5828ZAV supports sampling rates up to 65 MSPS as well. These rates are specified in the respective Texas Instruments datasheets for the ultrasound AFE family.
Do the AFE5809ZCF and AFE5828ZAV support continuous-wave (CW) Doppler processing?
The AFE5809ZCF includes an integrated CW Doppler mixer and digital demodulator per channel, enabling on-chip CW Doppler processing. The AFE5828ZAV does not include the CW Doppler mixer/demodulator block; CW Doppler processing would need to be implemented externally if required. This is the key functional differentiator between the two parts.
Are the AFE5809ZCF and AFE5828ZAV pin- or package-compatible?
Both devices are offered in a 289-ball BGA package (ZCF/ZAV package designators). However, because the AFE5809ZCF includes the CW Doppler mixer and demodulator while the AFE5828ZAV does not, the pin functions and internal signal routing differ. They should not be treated as drop-in replacements; any substitution must be validated against the specific package pinout and land pattern in the respective Texas Instruments datasheets.
What are the typical power supply requirements for these AFEs?
Both devices operate from a 1.8 V analog supply and a 1.8 V digital supply, with an additional 3.3 V supply for certain analog blocks, as specified in the Texas Instruments datasheets. The AFE5809ZCF, due to the added CW Doppler circuitry, has higher total power consumption than the AFE5828ZAV. Exact current and power figures should be taken from the respective datasheet power-supply tables for the specific operating mode.
What input signal range and gain control do these AFEs provide?
Both devices feature a low-noise amplifier with programmable gain, a voltage-controlled attenuator providing a wide attenuation range, and a programmable gain amplifier, allowing a large overall dynamic range suitable for ultrasound receive chains. The LNA, VCA, and PGA gain/attenuation settings are programmable via the serial interface. Specific gain ranges and step sizes are documented in the Texas Instruments datasheets for each device.
Which device should be selected for a new ultrasound receive-chain design?
Selection depends on system requirements. Choose the AFE5809ZCF when on-chip CW Doppler mixing and demodulation are needed to reduce external component count and board area. Choose the AFE5828ZAV when CW Doppler processing is not required, allowing a simpler, lower-power signal chain. In both cases, confirm channel count, sampling rate, package, and power budget against the target system specification and the official Texas Instruments datasheets.