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 AFE5818ZBV and AFE5808AZCF are both 8-channel ultrasound analog front ends from Texas Instruments sharing the same core architecture, making the AFE5818ZBV a viable functional replacement candidate for the AFE5808AZCF in many ultrasound receive-chain designs. However, the two devices differ in package footprint, supply configuration, and certain performance parameters, so a direct drop-in substitution is not guaranteed. Designers should validate pinout, power sequencing, and clocking requirements against the target board before committing to the replacement.
Channel Count
High match
Package Type
Validation required
Supply Voltage
Validation required
Analog Front-End Architecture
Validation required
Parts at a glance
Part B
AFE5818ZBV
德州儀器
- Lifecycle
- Active
- Stock
- 4837 件
- Package
- NFBGA-289
- 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 | AFE5818ZBV | AFE5808AZCF | Why it matters |
|---|---|---|---|
| Number of Channels | 16 | 8 | Channel count determines how many transducer elements can be processed simultaneously; a 16-channel device cannot directly replace an 8-channel device in a fixed 8-channel system without redesign. |
| ADC Resolution | 14 bit | 12 bit | Higher ADC resolution provides greater dynamic range and finer signal quantization, affecting image quality and small-signal detection in ultrasound receive chains. |
| Maximum ADC Sampling Rate | 65 MSPS | 65 MSPS | Sampling rate sets the maximum signal bandwidth and Nyquist limit; matching rates support comparable time-gain and beamforming timing budgets. |
| LNA Gain Range | 24 dB (fixed gain options) | 24 dB (fixed gain options) | Low-noise amplifier gain affects input-referred noise and sensitivity; comparable gain settings preserve front-end noise performance when substituting. |
| Total Power per Channel | ~150 mW/channel | ~185 mW/channel | Power per channel impacts thermal design and system power budget; a lower per-channel power device may allow denser arrays or reduced cooling requirements. |
| Package Type | NFBGA (ZBV) | NFBGA (ZCF) | Package footprint and ballout must match for board-level drop-in compatibility; differing package codes indicate different mechanical and pinout constraints. |
| Operating Temperature Range | 0°C to 70°C | 0°C to 70°C | Temperature range defines the environments where the device is guaranteed to meet specifications; matching ranges support equivalent application conditions. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Supply rails must be compatible with the existing power architecture; identical rails simplify substitution without regulator changes. |
| Continuous Wave (CW) Doppler Support | Yes | Yes | CW Doppler capability is required for blood-flow velocity measurement; both supporting it preserves the clinical feature set. |
| Digital Interface | LVDS | LVDS | The output interface must match the downstream FPGA/ASIC receiver; identical LVDS signaling allows reuse of the existing digital back-end. |
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 | AFE5818ZBV |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 12, 14 | 14 |
| Number of Channels | 8 | 16 |
| Power (Watts) | 158 mW | 140 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 | 1.15V ~ 1.25V, 1.7V ~ 1.9V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the AFE5818ZBV and AFE5808AZCF?
The AFE5818ZBV and AFE5808AZCF are fully integrated analog front-end (AFE) devices from Texas Instruments designed for ultrasound imaging systems. Both integrate a low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), and a 12-bit or 14-bit analog-to-digital converter (ADC) with digital signal processing features.
What is the key difference in channel count between the AFE5818ZBV and AFE5808AZCF?
The AFE5818ZBV is an 8-channel AFE, while the AFE5808AZCF is also an 8-channel device. Both are 8-channel analog front-ends intended for multi-channel ultrasound receive signal chains.
How do the ADC resolutions of the AFE5818ZBV and AFE5808AZCF compare?
The AFE5818ZBV integrates a 14-bit ADC, whereas the AFE5808AZCF integrates a 12-bit ADC. The higher resolution of the AFE5818ZBV provides finer quantization for applications requiring greater dynamic range.
What are the maximum sampling rates of the AFE5818ZBV and AFE5808AZCF?
The AFE5818ZBV supports a maximum ADC sampling rate of 65 MSPS, while the AFE5808AZCF supports a maximum sampling rate of 65 MSPS as well. Both are suitable for high-frequency ultrasound signal acquisition.
Do the AFE5818ZBV and AFE5808AZCF use the same package type?
The AFE5818ZBV is offered in a 289-ball NFBGA package, and the AFE5808AZCF is offered in a 289-ball NFBGA package. Both share the same ball-grid array footprint family, but pin assignments and thermal characteristics should be verified against the respective datasheets before any board-level substitution.
What are the typical power consumption figures for the AFE5818ZBV and AFE5808AZCF?
The AFE5818ZBV typically consumes approximately 1.1 W total at 65 MSPS across 8 channels, while the AFE5808AZCF typically consumes approximately 0.9 W at 65 MSPS across 8 channels. Actual power depends on operating mode, gain settings, and sampling rate.
Can the AFE5818ZBV and AFE5808AZCF be used interchangeably in an existing ultrasound design?
No, they are not pin-for-pin or functionally interchangeable without design validation. Differences in ADC resolution (14-bit vs 12-bit), power consumption, and register map details require firmware and hardware verification against the respective Texas Instruments datasheets before substitution.
What digital interfaces do the AFE5818ZBV and AFE5808AZCF support?
Both devices provide LVDS serial output interfaces for ADC data and support SPI-compatible serial control interfaces for register configuration. The exact lane count, bit depth per frame, and timing parameters differ between the 14-bit AFE5818ZBV and the 12-bit AFE5808AZCF and must be confirmed from the manufacturer datasheets.