Specifications
| Type | Description |
|---|---|
| Part Number | AD7401YRWZ |
| Manufacturer | Analog Devices |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | AD7401A on evaluation board: 16-lead SOIC package; AD7400A option: 8-lead surface-mount PDIP package with gull wing leads |
| Evaluation Board Supported Devices | AD7400A and AD7401A |
| Evaluation Board Compatibility | EVAL-CED1Z compatible using 34-pin SPORT connector |
| Standalone Capability | Supported; evaluation board can be used as standalone unit |
| Analog Input Buffering | On-board analog buffering using two AD797 analog op amps for differential analog input buffering |
| Modulator Architecture | Second-order sigma-delta modulator |
| Isolation Technology | On-chip digital isolation using Analog Devices iCoupler technology |
| Device Power Supply | 5 V |
| Differential Input Range | ±200 mV nominal; ±320 mV full scale |
| Sampling Method | Continuously sampled analog input; no external sample-and-hold required |
| Output Data Stream | 1-bit high speed data stream |
| Output Data Rate | 10 MHz; input information contained in output stream as density of ones |
| Serial I/O Supply | 5 V or 3 V VDD2 serial I/O supply |
| Interface Connector | Standard 2-row 34-pin SPORT connector for interface to EVAL-CED1Z |
| External Signal Access | External sockets provided for external signals on evaluation board |
| VDD1 Supply Range | 4.5 V to 5.25 V isolated supply via J1 connector |
| VDD2 Supply Requirement with EVAL-CED1Z | 3.3 V nonisolated supply when used with EVAL-CED1Z 3.3 V logic level |
| Standalone Supply Inputs | VDD1 +5 V, VDD2 +3 V to +5 V, -5 V, AGND, DGND |
| Negative Supply Requirement | -5 V only required when external AD797 op amps are used for buffering analog inputs |
| Supply Decoupling | 10 µF tantalum and 0.1 µF multilayer ceramic capacitors at supply entry points |
| Ground Plane Structure | Split isolated and nonisolated ground planes preserve isolation between device sides |
| AD7401A Evaluation Board Device Package | 16-lead SOIC |
| AD7400A Evaluation Board Device Package | 8-lead surface-mount PDIP with gull wing leads |
| Link Options Count | Seven link options and two solder links must be set for selected operating setup |
| J7 Function | Selects MCLKOUT destination for AD7400A or MCLKIN source for AD7401A; A to SPORT/EVAL-CED1Z, B to J5 SMB |
| J8 Function | Selects MDAT output destination; A to SPORT/EVAL-CED1Z, B to J6 SMB socket |
| J9 Function | Selects VDD2 nonisolated supply source; A external via J4-1, B EVAL-CED1Z 5 V not recommended, C EVAL-CED1Z 2.5 V not recommended |
| J10 Function | Selects VIN+ analog input source; A buffered by AD797 U2, B unbuffered, C tied to GND1 |
| J11 Function | Selects AD797 U2 buffering path for J2 SMB analog input; A buffered, B direct to VIN+ unbuffered |
| J13 Function | Selects AD797 U3 buffering path for J3 SMB analog input; A buffered, B direct input unbuffered |
| J14 Function | Selects VIN- analog input source; A buffered by AD797 U3, B unbuffered, C tied to GND1 |
| Default Packaged J7 Position | A; MCLKOUT from AD7400A to EVAL-CED1Z or MCLKIN for AD7401A supplied by EVAL-CED1Z |
| Default Packaged J8 Position | A; MDAT supplied directly to EVAL-CED1Z |
| Default Packaged J9 Position | A; VDD2 supplied by external 3.3 V source via J4 connector |
| Default Packaged Analog Input Configuration | Single-ended VIN+ direct input; VIN- tied to AGND; J10=B, J11=B, J13=B, J14=C |
| MCLKOUT/MCLKIN Solder Link Default | B; MCLKOUT/MCLKIN pin connected directly to J7 |
| MDAT Solder Link Default | B; MDAT pin connected directly to J8 |
| Datasheet Status | request_only |
Product Overview
AD7401YRWZ content is based on the Analog Devices EVAL-AD7400A/AD7401A evaluation board for AD7400A and AD7401A sigma-delta modulators. The supported devices use a second-order sigma-delta modulator architecture with on-chip digital isolation based on Analog Devices iCoupler technology. The analog input is continuously sampled, so no external sample-and-hold is required, and input information is represented in a 1-bit high speed output stream as the density of ones at a 10 MHz data rate.
The board provides on-board differential analog input buffering using two AD797 analog op amps. The AD7401A evaluation board device package is 16-lead SOIC, while the AD7400A evaluation board option uses an 8-lead surface-mount PDIP package with gull wing leads. The board includes a standard 2-row 34-pin SPORT connector for EVAL-CED1Z compatibility and also provides external sockets for external signals.
Power and setup options are configurable for either EVAL-CED1Z operation or standalone use. VDD1 is supplied from 4.5 V to 5.25 V through J1, VDD2 supports 5 V or 3 V serial I/O operation, and standalone inputs include VDD1 +5 V, VDD2 +3 V to +5 V, -5 V, AGND, and DGND.
Key Features
- Supports AD7400A and AD7401A evaluation board configurations
- Second-order sigma-delta modulator architecture
- On-chip digital isolation using iCoupler technology
- ±200 mV nominal and ±320 mV full-scale differential input
- Continuously sampled analog input without external sample-and-hold
- 1-bit high speed output data stream at 10 MHz
- On-board differential buffering with two AD797 op amps
- Standard 2-row 34-pin SPORT connector for EVAL-CED1Z
- Standalone operation with separate supply and ground inputs
- Split isolated and nonisolated ground plane structure
Typical Applications
- AD7400A and AD7401A evaluation
- Sigma-delta modulator setup testing
- Isolated signal-chain evaluation
- Differential analog input buffering evaluation
- EVAL-CED1Z SPORT interface operation
- Standalone modulator board operation
- External MCLK and MDAT signal access
Procurement Notes
When requesting a quote for AD7401YRWZ, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
Which devices are supported by this evaluation board?
The EVAL-AD7400A/AD7401A evaluation board supports the AD7400A and AD7401A devices. The AD7401A board device package is 16-lead SOIC, while the AD7400A option uses an 8-lead surface-mount PDIP package with gull wing leads.
What input range and output stream does the board evaluate?
The supported modulator devices use a nominal ±200 mV differential input range and ±320 mV full-scale range. The analog input is continuously sampled and converted to a 1-bit high speed output stream at a 10 MHz data rate.
Can the board operate without the EVAL-CED1Z controller?
Yes. The evaluation board can be used as a standalone unit. Standalone supply inputs include VDD1 +5 V, VDD2 +3 V to +5 V, -5 V, AGND, and DGND; -5 V is only required when the external AD797 op amps are used.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: August 17, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.