Part A
AD976AARZ
ADI公司
- Lifecycle
- Active
- Stock
- 1424 件
- Package
- SOIC-28
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Not a drop-in replacement
The AD976AARZ and AD9760ARU50 are not drop-in replacements for one another. Although both are 10-bit high-speed CMOS analog-to-digital converters from Analog Devices, they differ in resolution architecture, package footprint, and interface timing, so the AD9760ARU50 cannot be substituted directly for the AD976AARZ without a board redesign and timing revalidation.
Different package footprint
Different pin configuration
Different interface timing
Different supply architecture
Parts at a glance
Part B
AD9760ARU50
ADI公司
- Lifecycle
- Active
- Stock
- 8985 件
- Package
- TSSOP-28
- Series
- 資料獲取-數模轉換器（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 | AD9760ARU50 | 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 | Voltage - Buffered | Current - Unbuffered | A buffered voltage output can drive loads directly, while a current output requires an external op-amp/I-V converter, changing the surrounding circuit design. |
| Data Interface | Parallel | Parallel | Both use a parallel interface, so the host-side digital connection style is compatible. |
| Supply Voltage | 5 V (analog and digital) | 2.7 V to 5.5 V | Supply requirements affect power rail design; the AD9760 supports a wider low-voltage range while the AD976AARZ is a 5 V part. |
| Settling Time | 35 ns | 35 ns | Settling time governs how quickly the output reaches its final value; matching values indicate similar dynamic speed capability. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Identical temperature ranges mean both suit the same industrial-grade environments. |
| Package / Mounting | 28-SOIC (surface mount) | 28-TSSOP (surface mount) | Different package footprints require different PCB land patterns, so a board redesign is needed to substitute one for the other. |
| Reference Type | External | External | Both require an external voltage reference, so reference circuitry must be provided in either design. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD976AARZ | AD9760ARU50 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Series | - | TxDAC® |
| Part Status | Active | Obsolete |
| 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) | 200k | - |
| 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 AD976AARZ and AD9760ARU50 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 AD9760ARU50 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 substitution is not possible.
What are the core functional differences between the AD976AARZ and AD9760ARU50?
The AD976AARZ is an analog-to-digital converter (ADC) that digitizes analog input signals with 16-bit resolution at up to 200 kSPS. The AD9760ARU50 is a digital-to-analog converter (DAC) that converts 10-bit digital words into analog output current at up to 50 MSPS. One converts analog to digital; the other converts digital to analog.
What are the resolution and sampling/update rate specifications of each part?
The AD976AARZ offers 16-bit resolution with a maximum throughput of 200 kSPS. The AD9760ARU50 offers 10-bit resolution with a maximum update rate of 50 MSPS. These specifications are not comparable in the same signal chain role because one is an ADC and the other is a DAC.
Do the AD976AARZ and AD9760ARU50 use the same package and pinout?
No. The AD976AARZ is supplied in a 28-lead SOIC (wide body) package, while the AD9760ARU50 is supplied in a 28-lead TSSOP package. The package types, body dimensions, and PCB land patterns differ, so they are not footprint-compatible.
What digital interface does each device provide?
The AD976AARZ provides a parallel digital output bus for its 16-bit conversion results. The AD9760ARU50 accepts a parallel 10-bit digital input word for conversion to analog output. Both use parallel interfaces, but the data width and direction (output vs input) differ.
Can the AD9760ARU50 be used to replace the AD976AARZ in a signal acquisition path?
No. The AD976AARZ performs analog-to-digital conversion in an acquisition path, whereas the AD9760ARU50 performs digital-to-analog conversion in a signal generation path. Replacing an ADC with a DAC is not functionally valid regardless of package or interface similarities.
What supply and reference considerations distinguish these two parts?
The AD976AARZ is an ADC that requires an analog input signal range and a voltage reference for conversion, with its digital outputs read by a host. The AD9760ARU50 is a current-output DAC that requires a digital input word and an external output load or op-amp to develop an analog voltage. Designers must consult each device's respective datasheet for exact supply, reference, and output compliance requirements before use.