Part A
AD976AARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1424 個数
- Package
- SOIC-28
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Not a drop-in replacement
The AD976AARZ and AD9760ARU50RL are not drop-in replacements for one another. Although both are 10-bit high-speed CMOS DACs from Analog Devices, they differ in resolution architecture, digital interface, supply voltage, and package footprint, so a direct board-level substitution is not possible without redesign.
Different resolution architecture
Different digital interface
Different supply voltage
Different package footprint
Parts at a glance
Part B
AD9760ARU50RL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 9961 個数
- Package
- TSSOP-28
- Series
- データ取得 - デジタル/アナログコンバータ (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 | AD976AARZ | AD9760ARU50RL | 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 alone does not differentiate them, but it confirms basic architecture compatibility. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Both provide unbuffered current outputs, requiring an external op-amp for voltage conversion; matching output type simplifies circuit reuse. |
| Data Interface | Parallel | Parallel | Both use a parallel interface, so the host bus timing and pin count are broadly similar, aiding board-level substitution. |
| Supply Voltage | 5 V (analog and digital) | 2.7 V to 5.5 V | The AD976AARZ requires a 5 V supply, while the AD9760ARU50RL supports a wider 2.7 V to 5.5 V range, affecting power rail design and low-voltage compatibility. |
| Settling Time | 35 ns | 35 ns | Settling time governs how quickly the output reaches its final value; identical values indicate comparable dynamic response. |
| Package / Case | 28-SOIC | 28-TSSOP | Different package footprints (SOIC vs TSSOP) mean the PCB land pattern must be redesigned; they are not drop-in replacements. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Matching industrial temperature ranges confirm both parts suit the same environmental conditions. |
| Mounting Type | Surface Mount | Surface Mount | Both are surface-mount devices, consistent with modern SMT assembly processes. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD976AARZ | AD9760ARU50RL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Series | - | TxDAC® |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | - |
| Sampling Rate(Per Second) | 200k | - |
| 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 AD976AARZ and AD9760ARU50RL interchangeable in an existing design?
No, they are not directly interchangeable. The AD976AARZ is a 16-bit, 200 kSPS parallel-output ADC in a 28-lead SOIC package, while the AD9760ARU50RL is a 10-bit, 50 MSPS high-speed DAC in a 28-lead TSSOP package. They differ in function (ADC vs DAC), resolution, speed, and package footprint, so a direct drop-in replacement is not possible.
What are the core functional differences between the AD976AARZ and AD9760ARU50RL?
The AD976AARZ is an analog-to-digital converter (ADC) that samples analog input signals and outputs 16-bit parallel digital data at up to 200 kSPS. The AD9760ARU50RL is a digital-to-analog converter (DAC) that converts 10-bit digital input words into an analog output current at update rates up to 50 MSPS. One converts analog to digital; the other converts digital to analog.
What are the resolution and sampling/update rate specifications for each part?
The AD976AARZ offers 16-bit resolution with a maximum throughput of 200 kSPS. The AD9760ARU50RL offers 10-bit resolution with a maximum update rate of 50 MSPS. These specifications are not comparable in a substitution context because the devices serve opposite signal-chain roles.
Do the AD976AARZ and AD9760ARU50RL use the same package and pinout?
No. The AD976AARZ is supplied in a 28-lead SOIC (wide body) package, while the AD9760ARU50RL is supplied in a 28-lead TSSOP package. The package types, body dimensions, and PCB land patterns differ, so neither part can be mounted on the other's footprint without a redesign.
What digital interface does each device use?
The AD976AARZ provides a 16-bit parallel digital output bus for interfacing to a host processor or FPGA. The AD9760ARU50RL accepts a 10-bit parallel digital input bus for conversion to analog output. Both use parallel interfaces, but the bus widths and data directions are different.
What are the typical supply voltage requirements for these parts?
The AD976AARZ operates from a single 5 V analog supply with a separate digital supply pin for interfacing. The AD9760ARU50RL operates from a 5 V analog supply and a 3 V to 5 V digital supply for its input interface. Designers should confirm exact supply ranges and decoupling requirements against the respective manufacturer datasheets before layout.
Can the AD9760ARU50RL be used to reconstruct signals sampled by the AD976AARZ?
In principle, a 16-bit ADC and a 10-bit DAC can coexist in a signal chain, but the DAC would limit the reconstructed resolution to 10 bits, discarding 6 bits of the ADC's output. Additionally, the DAC's 50 MSPS update rate far exceeds the ADC's 200 kSPS throughput, so the DAC would be significantly underutilized. System-level resolution and rate budgets must be evaluated before pairing them.
Which part should be selected for a high-speed waveform generation application?
The AD9760ARU50RL is the appropriate choice for high-speed waveform generation because it is a 10-bit DAC with a 50 MSPS update rate. The AD976AARZ is an ADC and cannot generate analog waveforms; it is intended for signal acquisition at up to 200 kSPS.