Part A
AFE5808AZCF
德州儀器
- Lifecycle
- Active
- Stock
- 4985 件
- Package
- NFBGA-135
- Series
- 資料獲取-類比前端（AFE）
Replacement verdict
Compatible functional replacement candidate
The AFE5808AZCF and AFE5804ZCF share the same Texas Instruments AFE58xx analog front-end family, ZCF 289-ball BGA package, and 12-bit LVDS output architecture, making them viable functional replacement candidates in ultrasound and medical imaging signal chains. However, the AFE5808AZCF offers eight channels versus four on the AFE5804ZCF, and its higher per-channel power and current draw require thermal and power-budget validation before substitution. Designers should confirm channel-count requirements, clock and reference configuration, and power delivery headroom prior to board-level adoption.
Channel Count
Not compatible
Package Type
High match
Output Interface
High match
Power Consumption
Validation required
Parts at a glance
Part B
AFE5804ZCF
德州儀器
- Lifecycle
- Active
- Stock
- 2032 件
- Package
- BGA-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 | AFE5804ZCF | Why it matters |
|---|---|---|---|
| Number of Input Channels | 8 | 8 | Channel count determines how many transducer elements can be processed simultaneously; both are 8-channel devices, so system architecture compatibility is maintained. |
| ADC Resolution | 12 bit | 12 bit | ADC bit depth sets the dynamic range and quantization noise floor of the receive path; identical resolution means comparable image quality potential. |
| Maximum ADC Sampling Rate | 65 MSPS | 50 MSPS | Higher sampling rate supports wider signal bandwidth and better time resolution; the AFE5808A can digitize faster signals than the AFE5804. |
| LNA Gain Range | 0 to 24 dB (in steps) | 0 to 24 dB (in steps) | Low-noise amplifier gain range affects sensitivity and the ability to handle weak echoes; matching ranges support similar front-end tuning. |
| Programmable Gain Amplifier (PGA) Range | 0 to 40 dB | 0 to 40 dB | PGA range determines the time-gain-compensation depth profile; identical range allows reuse of the same gain control firmware. |
| Continuous Wave (CW) Doppler Support | Yes (integrated CW mixer) | Yes (integrated CW mixer) | CW Doppler capability is required for blood-flow velocity measurement; both devices include it, preserving Doppler functionality. |
| Supply Voltage | 3.3 V (analog), 1.8 V (digital) | 3.3 V (analog), 1.8 V (digital) | Supply rails must match the board power design; identical rails allow drop-in power compatibility. |
| Package | 100-pin NFBGA (ZCF) | 100-pin NFBGA (ZCF) | Package and pinout determine PCB footprint compatibility; matching ZCF packages enable direct board-level substitution. |
| Operating Temperature Range | 0°C to 70°C | 0°C to 70°C | Temperature range affects suitability for the target environment; identical commercial ranges mean equivalent environmental ratings. |
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 | AFE5808AZCF | AFE5804ZCF |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 12, 14 | 12 |
| Number of Channels | 8 | 8 |
| Power (Watts) | 158 mW | 101 mW |
| Voltage - Supply, Analog | 1.7V ~ 1.9V, 3.15V ~ 3.6V, 5V | 3.15V ~ 3.47V, 5V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V | 1.7V ~ 1.9V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AFE5808AZCF and AFE5804ZCF?
The AFE5808AZCF is an 8-channel fully integrated analog front end with a maximum sampling rate of 65 MSPS and 14-bit ADC resolution, while the AFE5804ZCF is an 8-channel analog front end with a maximum sampling rate of 50 MSPS and 12-bit ADC resolution. The AFE5808A also integrates CW (continuous wave) Doppler processing, whereas the AFE5804 does not include CW Doppler mixers.
Are the AFE5808AZCF and AFE5804ZCF pin-compatible?
Both devices are offered in the same 100-pin TQFP (ZCF) package, but they are not drop-in replacements. Pin functions and internal signal routing differ between the two devices, so designers must verify the pinout against the respective datasheets before considering any substitution.
What is the maximum sampling rate of each device?
The AFE5808AZCF supports a maximum ADC sampling rate of 65 MSPS, while the AFE5804ZCF supports a maximum sampling rate of 50 MSPS. The higher rate of the AFE5808A enables wider bandwidth signal acquisition in ultrasound receive chains.
Do both devices include continuous wave (CW) Doppler support?
No. The AFE5808AZCF integrates CW Doppler mixers for continuous wave processing, while the AFE5804ZCF does not include CW Doppler functionality. Designs requiring CW Doppler must use the AFE5808A or a comparable device with integrated CW mixers.
What ADC resolution does each device provide?
The AFE5808AZCF provides 14-bit ADC resolution, and the AFE5804ZCF provides 12-bit ADC resolution. The higher resolution of the AFE5808A supports improved dynamic range in demanding ultrasound imaging applications.
What is the typical application for these analog front ends?
Both the AFE5808AZCF and AFE5804ZCF are intended for medical ultrasound imaging systems, where they provide multi-channel signal conditioning, variable gain amplification, and analog-to-digital conversion for transducer receive channels.
Can the AFE5804ZCF be used as a substitute for the AFE5808AZCF?
Direct substitution is not recommended. The AFE5804ZCF has a lower maximum sampling rate (50 MSPS vs. 65 MSPS), lower ADC resolution (12-bit vs. 14-bit), and lacks integrated CW Doppler mixers. Any substitution requires full validation against the system requirements and manufacturer documentation.