Part A
AD976ARZ
ADI公司
- Lifecycle
- Active
- Stock
- 1637 件
- Package
- SOIC-28
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Not a drop-in replacement
The AD976ARZ and AD9760ARU are not drop-in replacements for one another. Although both are 10-bit high-speed analog-to-digital converters, they differ in resolution architecture, package footprint, pinout, and supply configuration, so a direct board-level substitution is not possible without redesign.
Different package footprint
Different pinout
Different supply configuration
Different input architecture
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD976ARZ | AD9760ARU | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 10 bit | Resolution determines the number of discrete output levels; a 16-bit DAC offers far finer granularity than a 10-bit DAC, so they are not functionally interchangeable in precision applications. |
| Number of D/A Converters | 1 | 1 | Both are single-channel DACs, so channel count is compatible for single-output designs. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Both provide unbuffered current outputs, requiring an external op-amp for voltage conversion, so the output interface topology is similar. |
| Data Interface | Parallel | Parallel | Both use a parallel digital interface, simplifying drop-in compatibility at the digital bus level. |
| Supply Voltage | ±5 V (analog), 5 V (digital) | 2.7 V to 5.5 V | Supply requirements differ significantly; the AD976ARZ needs bipolar analog rails while the AD9760ARU runs from a single low-voltage supply, affecting board power design. |
| Settling Time | 35 ns | 35 ns | Similar settling time indicates comparable dynamic response speed for waveform generation. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Matching industrial temperature ranges mean both suit the same environmental conditions. |
| Package / Mounting Type | 28-SOIC (Surface Mount) | 28-TSSOP (Surface Mount) | Different package footprints (SOIC vs TSSOP) prevent direct board-level substitution without layout changes. |
| INL / DNL | ±2 LSB INL (typ) | ±0.5 LSB INL (typ) | Linearity specifications differ; the AD9760ARU offers tighter relative linearity, which matters for accuracy-critical signal chains. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD976ARZ | AD9760ARU |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Analog Devices Inc. |
| Series | - | TxDAC® |
| Part Status | Active | Active |
| Number of Bits | 16 | 10 |
| Number of D/A Converters | - | 1 |
| Settling Time | - | 35ns (Typ) |
| Output Type | - | Current - Unbuffered |
| Differential Output | - | Yes |
| Data Interface | Parallel | Parallel |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 5V | 2.7V ~ 5.5V |
| INL / DNL(LSB) | - | ±0.5, ±0.25 |
| Architecture | SAR | Current Source |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Sampling Rate(Per Second) | 100k | - |
| Number of Inputs | 1 | - |
| Input Type | Single Ended | - |
| Configuration | S/H-ADC | - |
| Ratio - S / H: ADC | 1:1 | - |
| Number of A/D Converters | 1 | - |
Frequently asked questions
Are the AD976ARZ and AD9760ARU interchangeable in an existing design?
No. The AD976ARZ is a 16-bit, 100 kSPS parallel-output ADC in a 28-lead SOIC package, while the AD9760ARU is a 10-bit, 125 MSPS high-speed ADC in a 28-lead TSSOP package. They differ in resolution, sample rate, output interface, package, and pinout, so they are not drop-in replacements.
What are the key resolution and sampling-rate differences between the AD976ARZ and AD9760ARU?
The AD976ARZ provides 16-bit resolution at up to 100 kSPS, targeting precision measurement applications. The AD9760ARU provides 10-bit resolution at up to 125 MSPS, targeting high-speed signal processing applications.
Do the AD976ARZ and AD9760ARU use the same output interface?
No. The AD976ARZ provides a parallel digital output word for its 16-bit conversion result, while the AD9760ARU provides a 10-bit parallel output intended for high-speed data capture. The interface timing, word width, and data rate differ between the two devices.
Are the AD976ARZ and AD9760ARU available in the same package?
No. The AD976ARZ is offered in a 28-lead SOIC package, and the AD9760ARU is offered in a 28-lead TSSOP package. The package footprints and pin assignments are not compatible, so PCB layouts cannot be shared without redesign.
Can the AD9760ARU be used to replace the AD976ARZ in a precision 16-bit measurement circuit?
No. The AD9760ARU is a 10-bit converter, so substituting it in a 16-bit measurement path would reduce resolution by 6 bits and change the system's noise and linearity performance. It also has a different package and pinout, so it cannot be mounted on the same PCB footprint.
Which device is better suited for high-speed digitization, the AD976ARZ or the AD9760ARU?
The AD9760ARU is better suited for high-speed digitization because it supports sample rates up to 125 MSPS, whereas the AD976ARZ is limited to 100 kSPS. The AD9760ARU's 10-bit resolution and high-speed parallel output are intended for fast signal acquisition, while the AD976ARZ is intended for precision low-speed conversion.
Do the AD976ARZ and AD9760ARU share the same analog input range and reference requirements?
No. The two devices have different analog input configurations and reference architectures appropriate to their respective speed and resolution classes. Designers must consult each device's official datasheet for the exact input range, reference voltage, and external component requirements before designing either circuit.
What should a designer verify before considering either the AD976ARZ or AD9760ARU for a new design?
The designer should verify resolution, sample rate, output interface width and timing, package footprint, pinout, analog input range, reference requirements, and power-supply requirements against the official manufacturer datasheet. Because the two parts target different application classes, the selection should be driven by the required resolution and conversion speed of the system.