Part A
AFE5818ZBV
德州儀器
- Lifecycle
- Active
- Stock
- 4837 件
- Package
- NFBGA-289
- Series
- 資料獲取-類比前端（AFE）
Replacement verdict
Compatible functional replacement candidate
The AFE5818ZBV and AFE5808ZCF are both 8-channel ultrasound analog front ends from Texas Instruments sharing the same core architecture, channel count, and TQFP-100 footprint, making them strong functional replacement candidates. However, the AFE5818ZBV offers a higher maximum sampling rate (65 MSPS vs 50 MSPS) and a different package thermal designation (ZBV vs ZCF), so the system clock, digital interface timing, and thermal budget must be validated before substitution in an existing design.
Channel Count
High match
Package Type
High match
Maximum Sampling Rate
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
AFE5808ZCF
德州儀器
- Lifecycle
- Active
- Stock
- 357 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 | AFE5818ZBV | AFE5808ZCF | Why it matters |
|---|---|---|---|
| Number of Channels | 16 | 8 | Channel count determines how many transducer elements can be processed simultaneously, directly affecting system density and channel-count architecture. |
| Package / Case | NFBGA-289 (15x15) | NFBGA-135 (15x15) | Different package footprints and ball counts require different PCB layouts, so the parts are not drop-in compatible. |
| ADC Resolution | 14 bit | 12 bit | Higher ADC resolution improves dynamic range and image quality, which is a key performance differentiator in ultrasound signal chains. |
| ADC Sampling Rate (max) | 65 MSPS | 65 MSPS | Sampling rate sets the maximum signal bandwidth and time resolution; identical rates ease timing design but do not offset other differences. |
| LNA Gain Range | 24 dB (fixed LNA gain) | 24 dB (fixed LNA gain) | Low-noise amplifier gain affects sensitivity and noise figure; matching values support similar front-end signal handling. |
| Total Power Consumption (typ) | ~1.1 W (16 ch) | ~0.65 W (8 ch) | Power budget and thermal design differ substantially, impacting supply sizing and heat dissipation in portable systems. |
| Supply Voltage | 1.8 V / 3.3 V | 1.8 V / 3.3 V | Compatible supply rails simplify power-tree reuse, though current demands differ with channel count. |
| Interface | LVDS serial output | LVDS serial output | Matching output interface eases FPGA/back-end integration, but data lane count scales with channel count. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Identical temperature ratings mean both suit the same environmental conditions for medical and industrial use. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AFE5818ZBV | AFE5808ZCF |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 14 | 12, 14 |
| Number of Channels | 16 | 8 |
| Power (Watts) | 140 mW | 158 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 | 1.15V ~ 1.25V, 1.7V ~ 1.9V | 1.7V ~ 1.9V |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the AFE5818ZBV and AFE5808ZCF?
The AFE5818ZBV and AFE5808ZCF are 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 analog-to-digital converter (ADC) to process signals from piezoelectric transducers.
How do the channel counts of the AFE5818ZBV and AFE5808ZCF differ?
The AFE5818ZBV is an 8-channel AFE, while the AFE5808ZCF is an 8-channel AFE as well. Both devices provide eight independent receive channels in a single package, making them suitable for multi-element ultrasound probe arrays.
What are the key differences in ADC resolution and sampling rate between the two devices?
The AFE5818ZBV integrates a 14-bit ADC with a maximum sampling rate of 65 MSPS. The AFE5808ZCF integrates a 12-bit ADC with a maximum sampling rate of 65 MSPS. The higher resolution of the AFE5818ZBV provides improved dynamic range for demanding imaging applications.
Do the AFE5818ZBV and AFE5808ZCF use the same package type?
No. The AFE5818ZBV is offered in a 289-ball NFBGA (ZBV) package, while the AFE5808ZCF is offered in a 289-ball NFBGA (ZCF) package. Although both are 289-ball NFBGA packages, the package designators differ, and PCB land patterns and thermal characteristics should be verified against the respective datasheets before layout.
What are the typical power consumption figures for these AFEs?
The AFE5818ZBV typically consumes approximately 1.1 W total across 8 channels (about 137 mW per channel) at 65 MSPS. The AFE5808ZCF typically consumes approximately 0.9 W total across 8 channels (about 112 mW per channel) at 65 MSPS. Actual power depends on operating mode and sampling rate.
Can the AFE5818ZBV and AFE5808ZCF be used interchangeably in an existing design?
No, they are not pin-for-pin or functionally interchangeable without design validation. Differences in ADC resolution (14-bit vs 12-bit), package designator, power consumption, and register map details require verification against both datasheets and validation of the target signal chain before substitution.
What are the typical applications for the AFE5818ZBV and AFE5808ZCF?
Both devices are intended for medical ultrasound imaging systems, including portable and cart-based ultrasound scanners. They are also used in non-destructive testing (NDT) and sonar applications where multi-channel, high-dynamic-range signal acquisition is required.