Part A
ADS5402IZAY
Техасские инструменты
- Lifecycle
- Active
- Stock
- 5854 ПКС
- Package
- NFBGA-196
- Series
- Сбор данных - аналогово-цифровые преобразователи (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS5404IZAY is a higher-speed, dual-channel pin-compatible upgrade to the ADS5402IZAY, sharing the same 196-ball NFBGA footprint, 12-bit resolution, and DDR LVDS output interface. Designers can substitute the ADS5404IZAY for the ADS5402IZAY to gain double the sampling rate (1 GSPS vs 500 MSPS) without PCB redesign, provided the downstream FPGA or receiver can accommodate the higher output data rate and the thermal budget is validated.
Resolution
High match
Package Type
High match
Output Interface
High match
Sampling Rate
Validation required
Parts at a glance
Part B
ADS5404IZAY
Техасские инструменты
- Lifecycle
- Active
- Stock
- 7413 ПКС
- Package
- LFBGA-196
- Series
- Сбор данных - аналогово-цифровые преобразователи (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADS5402IZAY | ADS5404IZAY | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both converters provide 12-bit resolution, so quantization noise floor and nominal SNR capability are comparable. |
| Sampling Rate | 800 MSPS | 500 MSPS | Maximum sample rate determines the usable input bandwidth and the ability to support higher intermediate frequencies in a given signal chain. |
| Number of Input Channels | 2 (dual) | 2 (dual) | Dual-channel architecture allows coherent sampling of I/Q or two independent signals, affecting system topology and board layout. |
| Output Interface | DDR LVDS | DDR LVDS | The digital output format must match the receiving FPGA/ASIC interface; identical LVDS output simplifies drop-in replacement. |
| Analog Input Type | Differential | Differential | Differential inputs improve common-mode rejection and dynamic performance; matching input topology preserves front-end design. |
| Supply Voltage | 1.8 V (analog/digital), 3.3 V (I/O) | 1.8 V (analog/digital), 3.3 V (I/O) | Compatible supply rails allow reuse of the same power tree and decoupling network without redesign. |
| Package | 196-ball BGA (ZAY) | 196-ball BGA (ZAY) | Identical package and pinout enable direct board-level substitution without layout changes. |
| Operating Temperature Range | -40°C to +85°C (industrial) | -40°C to +85°C (industrial) | Matching temperature grades ensure the part meets the same environmental requirements in the target application. |
| Power Consumption (typical) | Higher (due to 800 MSPS) | Lower (due to 500 MSPS) | Power dissipation affects thermal design and supply sizing; the faster device draws more current, which may require thermal review. |
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 | ADS5402IZAY | ADS5404IZAY |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 800M | 500M |
| Number of Inputs | 2 | 2 |
| Input Type | Differential | Differential |
| Data Interface | Parallel | LVDS - Parallel |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 2 | 2 |
| Architecture | Pipelined | Pipelined |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 1.7V ~ 1.9V, 3.15V ~ 3.45V | 1.7V ~ 1.9V, 3.15V ~ 3.45V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V | 1.7V ~ 1.9V |
| Features | Simultaneous Sampling | Simultaneous Sampling |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS5402IZAY and ADS5404IZAY analog-to-digital converters?
Both are dual-channel, 12-bit ADCs from Texas Instruments in a 100-pin TQFP (ZAY) package. The primary difference is sampling rate: the ADS5402IZAY operates at up to 800 MSPS, while the ADS5404IZAY operates at up to 500 MSPS. Both share the same 12-bit resolution, dual-channel architecture, and DDR LVDS output interface.
Are the ADS5402IZAY and ADS5404IZAY pin-compatible?
Yes. Both devices are offered in the same 100-pin TQFP (ZAY) package and share a common pinout, which allows board designs to accommodate either device. However, the maximum sampling rate and associated timing specifications differ, so the system clock and output timing must be validated for the specific device used.
What is the resolution and output interface of these ADCs?
Both the ADS5402IZAY and ADS5404IZAY are 12-bit resolution ADCs with dual channels. They provide a DDR (double data rate) LVDS output interface for digital data output, supporting high-speed data capture by FPGAs or other logic devices.
Can the ADS5404IZAY be used as a drop-in replacement for the ADS5402IZAY?
Because both share the same package and pinout, the ADS5404IZAY can be placed on a board designed for the ADS5402IZAY. However, the ADS5404IZAY has a lower maximum sampling rate (500 MSPS vs. 800 MSPS), so the system clock must be reduced accordingly, and all timing and performance specifications must be re-validated against the ADS5404IZAY datasheet.
What is the maximum sampling rate of each device?
The ADS5402IZAY supports a maximum sampling rate of 800 MSPS, while the ADS5404IZAY supports a maximum sampling rate of 500 MSPS. Both are dual-channel, 12-bit converters.
Do both devices support the same input signal range and clocking scheme?
Both devices are designed for high-speed analog input sampling with differential input configuration and require an external sampling clock. Detailed analog input full-scale range, clock input requirements, and timing parameters should be verified against the respective Texas Instruments datasheets, as these specifications may differ between the 800 MSPS and 500 MSPS variants.
What applications are these ADCs typically used for?
Both the ADS5402IZAY and ADS5404IZAY are suited for high-speed signal acquisition applications such as communications receivers, test and measurement equipment, radar, and software-defined radio, where dual-channel 12-bit conversion with LVDS output is required. The ADS5402IZAY is preferred where higher sampling rate (800 MSPS) is needed, while the ADS5404IZAY suits applications requiring up to 500 MSPS.