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
AD976ARZ and AD9760ARU50 are not drop-in replacements for each other. The AD976ARZ is a 16-bit parallel current-output DAC in a 28-lead SOIC package, while the AD9760ARU50 is a 10-bit current-output DAC in a 28-lead TSSOP package with a different resolution, supply range, and pinout. Designers must validate interface timing, reference configuration, and board layout before considering any substitution.
Different resolution
Different package type
Different supply range
Different pinout
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 | AD976ARZ | AD9760ARU50 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 10 bit | Resolution determines the number of discrete output levels; a 16-bit DAC provides far finer quantization than a 10-bit DAC, so these parts 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 for substitutability. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Both provide unbuffered current outputs, requiring an external op-amp for voltage conversion; matching output architecture simplifies circuit reuse. |
| Data Interface | Parallel | Parallel | Both use a parallel input interface, so the host-side digital connection scheme is compatible between the two parts. |
| 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 AD9760ARU50 operates from a single low-voltage supply, affecting board power design. |
| Settling Time | 35 ns | 11 ns | Settling time limits maximum update rate and dynamic performance; the faster AD9760ARU50 suits higher-speed signal generation. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Identical temperature ratings mean both are suitable for the same industrial environment conditions. |
| Package / Mounting Type | 28-SOIC (Surface Mount) | 28-TSSOP (Surface Mount) | Different package footprints require PCB layout changes; the parts are not drop-in replacements despite similar pin counts. |
| Reference Type | External | External, Internal | The AD9760ARU50 offers an internal reference option while the AD976ARZ requires an external reference, affecting BOM count and design flexibility. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD976ARZ | 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) | 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 AD9760ARU50 functionally interchangeable?
No. The AD976ARZ is a 16-bit, 100 kSPS parallel-output ADC in a 28-lead SOIC package, while the AD9760ARU50 is a 10-bit, 50 MSPS ADC in a 28-lead TSSOP package with a different output interface and speed grade. They differ in resolution, sample rate, package, and pinout, so they are not drop-in replacements.
What are the key resolution and sampling-rate differences between the AD976ARZ and AD9760ARU50?
The AD976ARZ provides 16-bit resolution at a maximum throughput of 100 kSPS. The AD9760ARU50 provides 10-bit resolution at a maximum conversion rate of 50 MSPS. These specifications target very different signal-chain requirements.
Do the AD976ARZ and AD9760ARU50 use the same package and pinout?
No. The AD976ARZ is supplied in a 28-lead SOIC (RW-28) package, and the AD9760ARU50 is supplied in a 28-lead TSSOP (RU-28) package. The pin assignments and PCB land patterns differ, so the two devices are not footprint-compatible.
What digital output interface does each device provide?
The AD976ARZ provides a parallel 16-bit digital output word. The AD9760ARU50 provides a parallel 10-bit digital output word. System designers must match the receiving logic and bus width to the respective output format.
Can the AD9760ARU50 be used to replace the AD976ARZ in an existing 16-bit design?
No. Replacing a 16-bit converter with a 10-bit converter reduces dynamic range and resolution by approximately 36 dB in quantization terms, and the package, pinout, and timing are incompatible. Such a substitution would require a complete redesign of the analog front end, digital interface, and PCB layout.
Are the AD976ARZ and AD9760ARU50 suited to the same applications?
No. The AD976ARZ, with 16-bit resolution at 100 kSPS, is intended for precision, lower-speed applications such as instrumentation and industrial measurement. The AD9760ARU50, with 10-bit resolution at 50 MSPS, is intended for higher-speed signal acquisition such as communications and video processing. Application suitability should be confirmed against the respective datasheets.
Do both devices operate from the same analog supply voltage?
Both devices are specified for a 5 V analog supply in their respective datasheets. However, because the devices differ in resolution, speed, and package, supply compatibility alone does not make them interchangeable; all electrical and timing parameters must be verified against the manufacturer datasheets for the target design.