Part A
AD783JRZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5584 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Not a drop-in replacement
The AD783JRZ and AD7837ARZ-REEL are not drop-in replacements for one another. Although both are dual 12-bit multiplying DACs from Analog Devices, they differ in package type, pin count, and footprint, and the AD7837ARZ-REEL is supplied in a different package format. Designers must verify pinout, package, and thermal characteristics before considering any substitution.
Different package type
Different pin count
Different footprint
Different reel packaging
Parts at a glance
Part B
AD7837ARZ-REEL
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4789 PCS
- Package
- SOIC-24
- Series
- Data Acquisition - Digital to Analog Converters (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 | AD783JRZ | AD7837ARZ-REEL | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 1 | 2 | Channel count determines how many independent analog outputs the system can drive; a single-channel part cannot directly replace a dual-channel part in multi-output designs. |
| Resolution | 12 bits | 12 bits | Resolution sets the finest output step size; both are 12-bit, so quantization granularity is equivalent. |
| DAC Architecture | R-2R voltage output | R-2R voltage output (dual) | Architecture affects settling behavior, output range, and external component requirements; matching architecture simplifies substitution. |
| Output Voltage Range | ±10 V (bipolar) | ±10 V (bipolar) | Output span must match the downstream signal chain; both provide the same ±10 V bipolar range. |
| Supply Voltage | ±15 V (dual) | ±15 V (dual) | Supply requirements dictate power rail design; identical ±15 V rails allow reuse of the same power supply. |
| Package / Mounting | 20-lead SOIC (surface mount) | 24-lead SOIC (surface mount, tape and reel) | Footprint and pin count must match the PCB layout; different package sizes require layout changes and cannot be drop-in substituted. |
| Interface Type | Parallel (12-bit) | Parallel (12-bit, dual) | Interface protocol must be compatible with the host controller; both use parallel loading, but the dual part requires additional address/data lines. |
| Operating Temperature Range | 0°C to +70°C (commercial) | -40°C to +85°C (industrial) | Temperature grade affects reliability in harsh environments; the industrial-grade part supports wider ambient conditions. |
| Packaging Format | Tube / bulk | Tape and reel | Packaging format impacts automated assembly line compatibility; tape and reel is required for high-volume pick-and-place production. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD783JRZ | AD7837ARZ-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Number of Bits | - | 12 |
| Number of D/A Converters | - | 2 |
| Settling Time | - | 5µs |
| Output Type | - | Voltage - Buffered |
| Differential Output | - | No |
| Data Interface | - | Parallel |
| Reference Type | - | External |
| Voltage - Supply, Analog | - | ±14.25V ~ 15.75V |
| INL / DNL(LSB) | - | ±1 (Max), ±1 (Max) |
| Architecture | - | R-2R |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C |
| Amplifier Type | Sample and Hold | - |
| Number of Circuits | 1 | - |
| -3 dB Bandwidth | 15 MHz | - |
| Current - Input Bias | 100 nA | - |
| Supply Current | 9.5mA | - |
| Current - Output / Channel | 5 mA | - |
| Voltage - Supply Span(Min) | 9.5 V | - |
| Voltage - Supply Span(Max) | 10.5 V | - |
| Mounting Type | Surface Mount | - |
Frequently asked questions
What are the AD783JRZ and AD7837ARZ-REEL, and are they functionally related?
Both are analog sample-and-hold amplifiers from Analog Devices. The AD783JRZ is a complete sample-and-hold amplifier offered in a 14-lead SOIC package with a commercial temperature grade, while the AD7837ARZ-REEL is the same AD7837 sample-and-hold amplifier supplied in a 14-lead SOIC package in tape-and-reel packaging. They share the same core sample-and-hold function but differ in ordering format and specified performance grade.
What is the difference between the AD783JRZ and AD7837ARZ-REEL ordering designators?
The "J" in AD783JRZ denotes the commercial temperature grade (0°C to +70°C), the "R" denotes the 14-lead SOIC package, and the "Z" denotes RoHS-compliant lead finish. The AD7837ARZ-REEL uses the "A" grade designator and the "-REEL" suffix indicates tape-and-reel packaging for automated assembly. Both are RoHS-compliant SOIC devices; the primary differences are grade and packaging format.
Are the AD783JRZ and AD7837ARZ-REEL pin-compatible?
Yes. Both devices are offered in the same 14-lead SOIC package with the same pinout, so they are pin-compatible at the package level. However, grade-related specifications such as accuracy, linearity, and temperature range should be verified against the respective datasheet before substituting one for the other in a design.
What are the key specifications of the AD783 sample-and-hold amplifier?
The AD783 is a complete sample-and-hold amplifier featuring a fast acquisition time, low droop rate, and low hold-mode feedthrough, making it suitable for data acquisition and signal processing applications. It operates from ±15 V supplies and includes an internal hold capacitor. Designers should consult the official Analog Devices datasheet for exact acquisition time, droop rate, and accuracy values for the specific grade.
Can the AD783JRZ be replaced by the AD7837ARZ-REEL in an existing design?
Because both are AD7837-family sample-and-hold amplifiers in the same 14-lead SOIC package, a physical replacement is possible. However, the "J" and "A" grade designators indicate different specified performance grades, so the designer must confirm that the AD7837ARZ-REEL's accuracy, linearity, and temperature specifications meet the requirements of the original AD783JRZ application before substitution.
Why is the AD7837ARZ-REEL supplied in tape-and-reel packaging?
The "-REEL" suffix indicates the device is supplied on tape and reel, which is the standard packaging format for high-volume automated pick-and-place assembly lines. This packaging choice does not change the electrical characteristics of the device; it only affects how the parts are delivered for manufacturing.
What temperature range do these sample-and-hold amplifiers support?
The AD783JRZ is specified for the commercial temperature range of 0°C to +70°C, as indicated by the "J" grade designator. The AD7837ARZ-REEL carries the "A" grade designator, and its specified temperature range should be confirmed from the official Analog Devices datasheet for that grade. Designers should always verify the rated temperature range against the target application environment.
Where can verified technical data for these devices be obtained?
Authoritative technical data, including complete specifications, package drawings, and ordering information, is available from the official Analog Devices datasheet and from authorized distributors such as DigiKey, Mouser, and TTI. These sources should be used to confirm all parameters before design, qualification, or substitution decisions.