Part A
ADS5402IZAY
Texas Instruments
- Lifecycle
- Active
- Stock
- 5854 PCS
- Package
- NFBGA-196
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS5407IZAY is a viable functional replacement candidate for the ADS5402IZAY, sharing the same package, pinout, resolution, and high-speed interface architecture. The primary distinction is the higher sampling rate of the ADS5407, which generally exceeds the ADS5402 requirement and should be validated against the system clocking and FPGA capture margin before production adoption.
Package Type
High match
Resolution
High match
Output Interface
High match
Sampling Rate
Validation required
Parts at a glance
Part B
ADS5407IZAY
Texas Instruments
- Lifecycle
- Active
- Stock
- 9148 PCS
- Package
- LFBGA-196
- Series
- Acquisition de données - Convertisseur analogique - numérique (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 | ADS5407IZAY | 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 Nyquist zone; the ADS5402 supports higher-speed signal capture than the ADS5407. |
| Number of Input Channels | 2 (dual) | 2 (dual) | Both are dual-channel ADCs, allowing simultaneous I/Q or two-signal acquisition with matched channel timing. |
| Output Interface | DDR LVDS | DDR LVDS | Both use DDR LVDS parallel outputs, so the digital host interface and board-level routing requirements are compatible. |
| Analog Input Type | Differential | Differential | Differential inputs in both parts provide common-mode rejection and better dynamic performance than single-ended inputs. |
| Supply Voltage | 1.8 V (analog and digital) | 1.8 V (analog and digital) | Matching 1.8 V supplies means the same power rails and decoupling scheme can be reused across both devices. |
| Package | 196-ball BGA (ZAY) | 196-ball BGA (ZAY) | Identical package and pinout family enable a common PCB footprint, simplifying substitution or dual-sourcing. |
| Power Consumption (typical) | Higher (due to 800 MSPS operation) | Lower (due to 500 MSPS operation) | Power dissipation affects thermal design and supply sizing; the higher-speed ADS5402 typically consumes more power than the ADS5407. |
| Operating Temperature Range | -40°C to +85°C (industrial) | -40°C to +85°C (industrial) | Both are rated for industrial temperature ranges, so they are interchangeable in most industrial and communications environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS5402IZAY | ADS5407IZAY |
|---|---|---|
| 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 ADS5407IZAY analog-to-digital converters?
Both are dual-channel, 12-bit ADCs from Texas Instruments in a 100-pin TQFP (ZAY) package, but they differ in maximum sampling rate and bandwidth. The ADS5402IZAY is specified for a 500 MSPS maximum sample rate, while the ADS5407IZAY is specified for 800 MSPS. The higher sample rate of the ADS5407 supports wider input bandwidth and is intended for applications requiring greater Nyquist bandwidth, whereas the ADS5402 targets lower-power, lower-rate designs.
Are the ADS5402IZAY and ADS5407IZAY pin-compatible and package-compatible?
Yes. Both devices are offered in the same 100-pin TQFP package designated ZAY and share the same pinout family, which allows board-level layout reuse. However, pin compatibility does not guarantee electrical or functional equivalence; the higher sample rate and associated timing of the ADS5407IZAY must be validated against the system clocking, output interface, and power design before substitution.
What is the resolution and channel configuration of these ADCs?
Both the ADS5402IZAY and ADS5407IZAY are dual-channel (two independent ADC cores), 12-bit resolution converters. Each channel provides a parallel LVDS output interface, and the devices are intended for high-speed digitization in communications, test and measurement, and radar applications.
How do the power consumption figures compare between the two parts?
The ADS5407IZAY, operating at a higher 800 MSPS maximum rate, generally dissipates more power than the ADS5402IZAY at 500 MSPS. Designers should consult the respective Texas Instruments datasheets for the exact total power at the intended sample rate and input conditions, since power scales with sampling frequency and output activity.
Can the ADS5407IZAY be used as a drop-in replacement for the ADS5402IZAY in an existing design?
It should not be treated as a drop-in replacement without validation. Although the package and pinout are shared, the ADS5407IZAY supports a higher maximum sample rate, which changes clock input requirements, output data rate, and thermal/power behavior. The system clock source, FPGA or receiver capture interface, and power delivery must be verified against the ADS5407IZAY datasheet before substitution.
What output interface do the ADS5402IZAY and ADS5407IZAY provide?
Both devices provide a parallel LVDS (low-voltage differential signaling) output data interface, with DDR (double data rate) output timing. This interface is intended for direct connection to FPGAs and ASICs that support LVDS capture at the corresponding sample rate.
What are typical applications for the ADS5402IZAY versus the ADS5407IZAY?
Both parts target high-speed signal acquisition such as wireless communications receivers, radar and electronic warfare, and high-speed test instrumentation. The ADS5402IZAY at 500 MSPS suits designs balancing power and bandwidth, while the ADS5407IZAY at 800 MSPS suits applications needing wider instantaneous bandwidth and higher oversampling, at the cost of higher power and tighter clocking requirements.