Part A
AD9761ARSZ
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 7536 PCS
- Series
- 데이터 수집 - 다이 모드 변환기(DAC)
Replacement verdict
Not a drop-in replacement
The AD9761ARSZ and AD976BR are not drop-in replacements for one another. Although both are 16-bit CMOS analog-to-digital converters, they differ in resolution architecture, sampling rate, package footprint, and interface configuration, so a direct board-level substitution is not possible without design changes.
Different sampling rate
Different package footprint
Different interface configuration
Different resolution architecture
Parts at a glance
Part B
AD976BR
아날로그 디바이스(주)
- Lifecycle
- Active
- Stock
- 102 PCS
- Package
- SOIC-28
- Series
- 데이터 수집 - 아날로그 변환기(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 | AD9761ARSZ | AD976BR | Why it matters |
|---|---|---|---|
| Resolution | 10 bit | 16 bit | Resolution determines the number of discrete output levels; a 16-bit DAC offers far finer granularity than a 10-bit device, so they are not functionally interchangeable in precision applications. |
| Number of D/A Converters | 2 | 1 | The AD9761ARSZ is a dual DAC while the AD976BR is a single DAC, which fundamentally changes channel count and circuit architecture. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Both provide unbuffered current outputs, requiring external I/V conversion, so the output interface topology is compatible. |
| Data Interface | Parallel | Parallel | Both use a parallel digital interface, so the host-side connection style is similar, though bus width differs with resolution. |
| Settling Time | 35 ns | 35 ns | Settling time affects maximum update rate and dynamic performance; matching values suggest comparable speed capability. |
| Reference Type | External, Internal | External, Internal | Both support internal or external reference, giving design flexibility in setting full-scale output. |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V | Analog supply range determines compatibility with the system power rail; identical ranges ease substitution from a power standpoint. |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V | Digital supply range must match the logic interface levels of the driving device; identical ranges support similar interfacing. |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | The operating temperature range indicates environmental robustness; matching industrial ranges suit similar application environments. |
| Package / Case | 28-SSOP | 28-SOIC | Package footprint and pinout must match for board-level drop-in substitution; different package styles require layout changes. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9761ARSZ | AD976BR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 10 | 16 |
| Sampling Rate(Per Second) | - | 100k |
| Number of Inputs | - | 1 |
| Input Type | - | Single Ended |
| Data Interface | Parallel | Parallel |
| Configuration | - | S/H-ADC |
| Ratio - S / H: ADC | - | 1:1 |
| Number of A/D Converters | - | 1 |
| Architecture | Current Source | SAR |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 3V ~ 5.5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Series | TxDAC+® | - |
| Base Product Number | AD9761 | - |
| Number of D / A Converters | 2 | - |
| Settling Time | 35ns (Typ) | - |
| Output Type | Current - Unbuffered | - |
| Differential Output | Yes | - |
| INL / DNL (LSB) | ±0.7, ±0.5 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Tube | - |
Frequently asked questions
Are the AD9761ARSZ and AD976BR functionally interchangeable?
No. The AD9761ARSZ is a dual-channel 10-bit 40 MSPS ADC in a 28-lead SSOP, while the AD976BR is a single-channel 16-bit 200 kSPS ADC in a 28-lead SOIC. They differ in resolution, channel count, sample rate, and package, so they are not drop-in replacements.
What are the key resolution and sampling-rate differences between the AD9761ARSZ and AD976BR?
The AD9761ARSZ provides 10-bit resolution per channel with two channels at up to 40 MSPS. The AD976BR provides 16-bit resolution on a single channel at up to 200 kSPS.
Do the AD9761ARSZ and AD976BR use the same package and pinout?
No. The AD9761ARSZ is supplied in a 28-lead SSOP (RS suffix), and the AD976BR is supplied in a 28-lead SOIC (R suffix). The package types and pin assignments differ, so PCB footprints are not compatible.
What are the typical applications for each device?
The AD9761ARSZ, with dual 10-bit channels at 40 MSPS, targets communications and signal-processing applications requiring simultaneous I/Q sampling. The AD976BR, with 16-bit resolution at 200 kSPS, targets precision measurement, instrumentation, and low-speed data-acquisition applications.
Can the AD976BR be used as a substitute where an AD9761ARSZ is specified?
No. Substitution would require redesign because the AD976BR is single-channel, has lower throughput (200 kSPS vs 40 MSPS), higher resolution (16-bit vs 10-bit), and a different package and pinout. The system architecture and PCB must be revalidated.
Do both parts support the same digital interface?
No. The AD9761ARSZ provides dual-channel parallel CMOS-compatible output data for two 10-bit channels. The AD976BR provides a single-channel parallel output for 16-bit data. Interface timing, word width, and bus configuration differ between the two devices.
Are the AD9761ARSZ and AD976BR available in RoHS-compliant versions?
The AD9761ARSZ suffix "Z" denotes a RoHS-compliant package per Analog Devices nomenclature. The AD976BR is a non-Z suffix part and should be verified against the specific manufacturer datasheet and ordering guide for RoHS status before use in compliant designs.