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 AFE5828ZAV is a viable functional replacement candidate for the AFE5808AZCF in many ultrasound receive-chain designs, as both are 8-channel fully integrated analog front ends with matched channel count, LVDS serial output interface, and overlapping supply and operating temperature ranges. However, the two devices differ in package footprint and pinout, and the AFE5828ZAV offers a higher maximum sampling rate, so a full board-level validation of layout, clocking, and digital timing is required before substitution.
Channel Count
High match
Output Interface
High match
Package Type
Validation required
Maximum Sampling Rate
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 | AFE5828ZAV | 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 | 12 bit | ADC bit depth sets the dynamic range and quantization noise floor of the receive path. |
| Maximum ADC Sampling Rate | 65 MSPS | 65 MSPS | Sampling rate limits the maximum signal bandwidth and image resolution achievable. |
| 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 echoes. |
| Total Gain Range (TGC) | 0 dB to 48 dB | 0 dB to 48 dB | Time-gain compensation range determines the depth over which signal levels can be normalized. |
| Input-Referred Noise | 0.8 nV/√Hz | 0.8 nV/√Hz | Input noise floor directly impacts the minimum detectable signal and image quality. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Supply rails must match the board power design for drop-in compatibility. |
| Package | NFBGA-289 | NFBGA-289 | Package footprint and pinout determine whether the part is physically interchangeable on an existing PCB. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Temperature range affects suitability for medical and industrial environments. |
| Interface | LVDS | LVDS | Output interface compatibility ensures the digital backend can receive data without redesign. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AFE5828ZAV | AFE5808AZCF |
|---|---|---|
| Part Status | Active | Active |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Bits | - | 12, 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 AFE5808AZCF and AFE5828ZAV?
The AFE5808AZCF and AFE5828ZAV are fully integrated analog front-end (AFE) devices from Texas Instruments designed for ultrasound imaging systems. Both integrate a complete time-gain-compensation (TGC) signal chain, including a low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), and an analog-to-digital converter (ADC), along with continuous-wave (CW) Doppler processing blocks.
What is the main difference between the AFE5808AZCF and AFE5828ZAV?
The primary difference is the ADC resolution and channel count configuration. The AFE5808AZCF is an 8-channel, 12-bit AFE, while the AFE5828ZAV is an 8-channel, 14-bit AFE. The higher ADC resolution of the AFE5828ZAV provides improved dynamic range and signal-to-noise performance for more demanding imaging applications.
Are the AFE5808AZCF and AFE5828ZAV pin-to-pin compatible?
No. The AFE5808AZCF is supplied in a 9 mm × 9 mm, 64-pin QFN package (ZCF), while the AFE5828ZAV is supplied in a 10 mm × 10 mm, 80-pin TQFP package (ZAV). The differing package footprints, pin counts, and pin assignments mean they are not drop-in replacements and require separate PCB layouts.
What are the maximum ADC sampling rates of these devices?
Both the AFE5808AZCF and AFE5828ZAV support a maximum ADC sampling rate of 65 MSPS per channel, enabling high-frame-rate ultrasound imaging with adequate oversampling for the supported transducer frequencies.
Do both devices include continuous-wave (CW) Doppler capability?
Yes. Both the AFE5808AZCF and AFE5828ZAV integrate an on-chip continuous-wave Doppler mixer and summing amplifier, allowing CW Doppler processing without external discrete mixers, which reduces system component count and board area.
What are the typical power consumption figures for these AFEs?
Both devices are designed for low-power operation. The AFE5808AZCF consumes approximately 158 mW per channel at 65 MSPS, while the AFE5828ZAV consumes approximately 185 mW per channel at 65 MSPS. The higher power of the AFE5828ZAV reflects its 14-bit ADC architecture. Designers should verify exact figures against the respective datasheets for their operating conditions.
What input signal range and LNA gain settings do these devices support?
Both AFEs feature a low-noise amplifier with selectable gain settings and a differential input configuration suitable for ultrasound transducer interfacing. The LNA supports multiple gain steps, and the VCA provides a continuous attenuation range, allowing the TGC chain to accommodate the wide dynamic range of ultrasound echo signals. Exact gain ranges and input voltage limits should be confirmed in the respective manufacturer datasheets.
Which device should be selected for a new ultrasound design?
Selection depends on the imaging requirements. The AFE5828ZAV offers 14-bit ADC resolution for higher dynamic range and better image quality in premium systems, at the cost of higher power and a larger package. The AFE5808AZCF offers 12-bit resolution in a smaller QFN package with lower power, making it suitable for compact or portable ultrasound systems where board space and power are constrained.