Part A
AD9744ACPZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1927 個数
- Package
- WFQFN-32
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD9744ACPZ and AD9744ACP are functionally equivalent 14-bit current-output DACs from the same AD9744 family, sharing identical resolution, architecture, and specified performance. The primary distinction is package finish: the AD9744ACPZ is the RoHS-compliant lead-free version, while the AD9744ACP is the non-RoHS leaded variant. For designs requiring RoHS compliance, the AD9744ACPZ is the preferred drop-in choice; otherwise, both parts are interchangeable at the functional level.
Resolution and Architecture
High match
Package Type
High match
RoHS Compliance
Not compatible
Operating Temperature Range
High match
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD9744ACPZ | AD9744ACP | Why it matters |
|---|---|---|---|
| Package / Case | 32-WFQFN Exposed Pad, CSP | 32-LFCSP (5x5) | The package footprint and thermal pad layout must match the PCB land pattern for a drop-in replacement; differing package designations can indicate different thermal or assembly requirements. |
| RoHS / Lead-Free Status | RoHS compliant, lead-free (Z suffix) | Non-RoHS, contains lead | The "Z" suffix denotes lead-free/RoHS compliance; substituting a non-compliant part affects regulatory compliance and solder process compatibility. |
| Resolution | 14 bits | 14 bits | Bit resolution determines the quantization granularity of the DAC output and must match for equivalent signal fidelity. |
| Update Rate (Sample Rate) | 210 MSPS | 210 MSPS | Maximum conversion rate defines the achievable output bandwidth and must be sufficient for the target application. |
| Supply Voltage | 3.0 V to 3.6 V (analog and digital) | 3.0 V to 3.6 V (analog and digital) | Operating supply range must be compatible with the board's power rails to avoid damage or malfunction. |
| Output Type | Current output (differential) | Current output (differential) | The output architecture determines the external interface circuitry (e.g., transformer or op-amp coupling) required. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | The temperature range must cover the application's environmental conditions for reliable operation. |
| Number of Pins | 32 | 32 | Pin count must match to ensure the device fits the same footprint and pinout. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9744ACPZ | AD9744ACP |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | TxDAC® | TxDAC® |
| Part Status | Active | Obsolete |
| Number of Bits | 14 | - |
| Number of D/A Converters | 1 | - |
| Settling Time | 11ns (Typ) | - |
| Output Type | Current - Unbuffered | - |
| Differential Output | Yes | - |
| Data Interface | Parallel | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 2.7V ~ 3.6V | - |
| Voltage - Supply, Digital | 2.7V ~ 3.6V | - |
| INL / DNL(LSB) | ±0.8, ±0.5 | - |
| Architecture | Current Source | - |
| Operating Temperature | -40°C ~ 85°C | - |
Frequently asked questions
What is the difference between the AD9744ACPZ and the AD9744ACP?
The AD9744ACPZ and AD9744ACP are both 14-bit, 210 MSPS TxDAC digital-to-analog converters from Analog Devices in a 32-lead LFCSP package. The primary difference is the suffix: the "Z" designation on the AD9744ACPZ indicates RoHS-compliant, lead-free construction, whereas the AD9744ACP is the non-RoHS (leaded) version. Functionally and electrically, the two parts share the same datasheet specifications.
Are the AD9744ACPZ and AD9744ACP electrically and functionally identical?
Yes. Both parts are the same 14-bit, 210 MSPS TxDAC core with identical resolution, update rate, on-chip 1.2 V reference, and analog output specifications as documented in the AD9744 datasheet. The only documented distinction is the RoHS/lead-free status indicated by the "Z" suffix.
Can the AD9744ACPZ be used as a drop-in replacement for the AD9744ACP?
Yes, in most cases. Both are offered in the same 32-lead LFCSP package with the same pinout, so the PCB land pattern is compatible. The AD9744ACPZ is the RoHS-compliant equivalent of the AD9744ACP, so it can replace the non-RoHS part where lead-free compliance is required or preferred. Designers should confirm the target assembly's soldering process and compliance requirements against the manufacturer datasheet.
What are the key performance specifications shared by the AD9744ACPZ and AD9744ACP?
Both devices are 14-bit TxDAC converters with a maximum update rate of 210 MSPS, an on-chip 1.2 V bandgap reference, differential current outputs, and a specified spurious-free dynamic range (SFDR) and signal-to-noise ratio (SNR) as listed in the AD9744 datasheet. They operate from a single 3.0 V to 3.6 V supply and are specified over the industrial temperature range.
Does the "Z" suffix on the AD9744ACPZ affect electrical performance?
No. The "Z" suffix denotes RoHS compliance and lead-free (Pb-free) construction; it does not change the device's electrical specifications. The AD9744ACPZ and AD9744ACP share the same datasheet parameters for resolution, speed, linearity, and dynamic performance.
Which part should be selected for a lead-free manufacturing process?
The AD9744ACPZ should be selected for lead-free, RoHS-compliant assemblies because its "Z" suffix indicates Pb-free construction. The AD9744ACP is the non-RoHS version and is not intended for lead-free processes. Selection should be confirmed against the manufacturer's product and compliance documentation.
Are the AD9744ACPZ and AD9744ACP available in the same package and pinout?
Yes. Both are supplied in the 32-lead LFCSP (lead frame chip scale package) with the same pin configuration as defined in the AD9744 datasheet. This common package and pinout is what allows the RoHS-compliant AD9744ACPZ to serve as a replacement for the AD9744ACP in existing layouts.