Part A
AD976ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1637 PCS
- Package
- SOIC-28
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Not a drop-in replacement
The AD976ARZ and AD9760AR50 are not drop-in replacements for one another. Although both are 10-bit analog-to-digital converters, they differ in resolution architecture, sampling rate, package footprint, and digital interface, so substituting one for the other requires board redesign and validation.
Different sampling rate
Different package footprint
Different digital interface
Different supply configuration
Parts at a glance
Part B
AD9760AR50
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4769 PCS
- Package
- SOIC-28
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
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 | AD9760AR50 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 10 bit | Resolution determines the number of discrete output levels; a 16-bit DAC offers far finer quantization than a 10-bit DAC, so they are not functionally interchangeable in precision applications. |
| Sampling Rate | 100 kSPS | 50 MSPS | The maximum update rate defines the signal bandwidth the DAC can reproduce; the AD9760 is roughly 500x faster, targeting high-speed signal synthesis while the AD976 is for low-speed precision work. |
| Number of DAC Channels | 1 | 1 | Both are single-channel DACs, so channel count is not a differentiator, but confirming it ensures neither part requires multi-channel support. |
| Output Type | Voltage (unbuffered) | Current (differential) | Output topology dictates the external analog signal chain; a voltage output can drive loads directly while a current output requires an external I/V converter stage. |
| Supply Voltage | ±5 V (dual) | 3.0 V to 5.5 V (single) | Supply requirements affect board-level power design; the AD976 needs bipolar rails while the AD9760 runs from a single low-voltage supply. |
| Interface | Parallel | Parallel | Both use a parallel digital interface, so the host-side connection style is compatible, though bus width differs with resolution. |
| Package | 28-Lead SOIC | 28-Lead SSOP | Package footprint and pinout determine PCB layout compatibility; different package types mean the parts are not drop-in replacements on an existing board. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both cover the industrial temperature range, so environmental tolerance is equivalent and not a barrier to substitution. |
| Settling Time | 1 µs | 35 ns | Settling time limits achievable update rates and dynamic accuracy; the much faster settling of the AD9760 reflects its high-speed design versus the precision-oriented AD976. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD976ARZ | AD9760AR50 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | - | TxDAC® |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | - |
| Sampling Rate(Per Second) | 100k | - |
| Number of Inputs | 1 | - |
| Input Type | Single Ended | - |
| Data Interface | Parallel | - |
| Configuration | S/H-ADC | - |
| Ratio - S / H: ADC | 1:1 | - |
| Number of A/D Converters | 1 | - |
| Architecture | SAR | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 5V | - |
| Voltage - Supply, Digital | 5V | - |
| Operating Temperature | -40°C ~ 85°C | - |
Frequently asked questions
Are the AD976ARZ and AD9760AR50 interchangeable in an existing design?
No, they are not directly interchangeable. The AD976ARZ is a 16-bit, 100 kSPS parallel-output ADC in a 28-lead SOIC package, while the AD9760AR50 is a 10-bit, 50 MSPS high-speed ADC in a 28-lead SSOP package. They differ in resolution, sample rate, output interface, package footprint, and analog front-end requirements, so a direct drop-in replacement is not possible.
What are the key resolution and sampling-rate differences between the AD976ARZ and AD9760AR50?
The AD976ARZ provides 16-bit resolution at a maximum throughput of 100 kSPS, targeting precision measurement applications. The AD9760AR50 provides 10-bit resolution at a maximum conversion rate of 50 MSPS, targeting high-speed signal processing. The two parts therefore serve fundamentally different speed-versus-precision roles.
Do the AD976ARZ and AD9760AR50 use the same digital output interface?
No. The AD976ARZ provides a parallel digital output word (16 bits) intended for slower, precision data-acquisition interfaces. The AD9760AR50 provides a 10-bit parallel output designed for high-speed capture, typically feeding an FPGA or high-speed logic. The bus width and timing characteristics differ, so the receiving logic must be redesigned if substituting one for the other.
Are the packages of the AD976ARZ and AD9760AR50 footprint-compatible?
No. The AD976ARZ is supplied in a 28-lead SOIC (wide-body) package, while the AD9760AR50 is supplied in a 28-lead SSOP package. These are different package families with different body widths, lead pitches, and PCB land patterns, so they cannot share the same footprint without a board redesign.
What analog input configurations do the AD976ARZ and AD9760AR50 require?
The AD976ARZ accepts a full-scale analog input range of ±10 V (with a 10 V reference configuration) and is intended for precision, lower-speed signal acquisition. The AD9760AR50 uses a differential analog input with a nominal 1 V p-p full-scale range and is optimized for high-speed, AC-coupled or transformer-coupled signal chains. Input drive, reference, and buffering requirements therefore differ significantly between the two devices.
Can the AD9760AR50 be used to replace the AD976ARZ in a precision measurement design?
No. The AD9760AR50's 10-bit resolution and high-speed pipeline architecture are not suited to the 16-bit precision applications served by the AD976ARZ. Replacing a 16-bit converter with a 10-bit device would reduce dynamic range and accuracy by roughly 36 dB in resolution terms, which is generally unacceptable in precision instrumentation.
Which device should be selected for high-speed digitization versus precision measurement?
For high-speed digitization (for example, communications, video, or IF sampling), the AD9760AR50 with its 50 MSPS throughput and 10-bit resolution is the appropriate choice. For precision, lower-speed measurement (for example, industrial instrumentation or data acquisition), the AD976ARZ with its 16-bit resolution and 100 kSPS throughput is the appropriate choice. Selection should be driven by the required resolution, bandwidth, and interface timing of the target system.