Part A
AFE5818ZBV
Texas Instruments
- Lifecycle
- Active
- Stock
- 4837 PCS
- Package
- NFBGA-289
- Series
- Data Acquisition - Analog Front End (AFE)
Replacement verdict
Not a drop-in replacement
The AFE5818ZBV and AFE5804ZCF are not drop-in replacements for one another. They differ in channel count, package footprint, power architecture, and interface configuration, so a direct board-level substitution is not feasible without redesign of the surrounding circuitry, power delivery, and layout.
Different channel count
Different package footprint
Different power architecture
Different interface configuration
Parts at a glance
Part B
AFE5804ZCF
Texas Instruments
- Lifecycle
- Active
- Stock
- 2032 PCS
- Package
- BGA-135
- Series
- Data Acquisition - Analog Front End (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 | AFE5804ZCF | Why it matters |
|---|---|---|---|
| Number of Channels | 16 | 8 | Channel count determines how many transducer elements can be processed simultaneously; a 16-channel device supports higher channel-count arrays than an 8-channel device. |
| ADC Resolution | 14 bit | 12 bit | Higher ADC resolution provides greater dynamic range and finer quantization, improving image quality and small-signal detection in ultrasound receive chains. |
| Maximum Sampling Rate | 65 MSPS | 40 MSPS | Sampling rate limits the maximum signal bandwidth and achievable axial resolution; a higher rate supports wider-bandwidth transducers and finer depth resolution. |
| LNA Gain Range | 6 dB to 30 dB | 6 dB to 30 dB | The low-noise amplifier gain range sets the input dynamic range and noise figure trade-off; matching ranges ease system-level gain planning. |
| Total Power Consumption | Approximately 1.1 W (typical, full 16 channels) | Approximately 0.6 W (typical, full 8 channels) | Power consumption affects thermal design and battery life in portable ultrasound systems; per-channel power is a key selection metric. |
| Package | NFBGA (ZBV) | NFBGA (ZCF) | Package footprint and pinout determine PCB layout compatibility; different packages require board redesign and are not drop-in interchangeable. |
| Analog Supply Voltage | 1.8 V / 3.3 V (multiple rails) | 1.8 V / 3.3 V (multiple rails) | Supply rail requirements affect power sequencing and regulator design; matching rails simplifies reuse of the power subsystem. |
| Interface Type | LVDS serial output | LVDS serial output | The digital output interface must match the downstream FPGA/ASIC receiver; LVDS is common but lane count and framing differ between devices. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AFE5818ZBV | AFE5804ZCF |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 14 | 12 |
| Number of Channels | 16 | 8 |
| Power (Watts) | 140 mW | 101 mW |
| Voltage - Supply, Analog | 1.7V ~ 1.9V, 3.15V ~ 3.6V, 5V | 3.15V ~ 3.47V, 5V |
| Voltage - Supply, Digital | 1.15V ~ 1.25V, 1.7V ~ 1.9V | 1.7V ~ 1.9V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the AFE5818ZBV and AFE5804ZCF?
The AFE5818ZBV is an 8-channel, fully integrated analog front-end (AFE) for ultrasound systems featuring a 14-bit ADC with a maximum sampling rate of 65 MSPS and a built-in continuous wave (CW) Doppler mixer. The AFE5804ZCF is an 8-channel AFE with a 12-bit ADC, a maximum sampling rate of 50 MSPS, and also includes a CW Doppler mixer. The AFE5818 offers higher resolution and a faster ADC conversion rate compared to the AFE5804.
Are the AFE5818ZBV and AFE5804ZCF pin-to-pin or package compatible?
No. The AFE5818ZBV is supplied in a 289-ball NFBGA (ZBV) package, while the AFE5804ZCF is supplied in a 120-ball NFBGA (ZCF) package. The different ball counts and package dimensions mean the two devices are not pin-to-pin compatible and require distinct PCB footprints.
What are the ADC resolution and maximum sampling rate specifications for each device?
The AFE5818ZBV integrates a 14-bit analog-to-digital converter with a maximum sampling rate of 65 MSPS. The AFE5804ZCF integrates a 12-bit ADC with a maximum sampling rate of 50 MSPS. These differences affect achievable dynamic range and Nyquist bandwidth in ultrasound receive chains.
Do both devices include continuous wave (CW) Doppler mixing capability?
Yes. Both the AFE5818ZBV and AFE5804ZCF integrate a continuous wave Doppler mixer, allowing them to support CW Doppler processing in ultrasound systems without an external mixer stage.
How do the channel counts of the AFE5818ZBV and AFE5804ZCF compare?
Both devices are 8-channel analog front-ends. Each integrates eight receive channels including low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), anti-aliasing filter, and ADC, making them suitable for multi-channel ultrasound beamforming architectures.
What are the typical power consumption differences between the AFE5818ZBV and AFE5804ZCF?
The AFE5818ZBV, with its higher 14-bit resolution and 65 MSPS ADC, typically consumes more power per channel than the AFE5804ZCF, which uses a 12-bit ADC at 50 MSPS. Designers should consult the respective manufacturer datasheets for exact per-channel power figures under specific operating conditions, as consumption varies with sampling rate and gain settings.
Can the AFE5818ZBV be used as a drop-in replacement for the AFE5804ZCF in an existing design?
No. Due to differences in package ball count (289-ball ZBV vs 120-ball ZCF), ADC resolution (14-bit vs 12-bit), maximum sampling rate (65 MSPS vs 50 MSPS), and PCB footprint, the AFE5818ZBV cannot be used as a drop-in replacement. A redesign of the PCB layout and validation of the digital interface timing would be required.