Part A
AD9746BCPZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4643 個数
- Package
- LFCSP-72
- 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 AD9746BCPZ and AD9746BCPZRL are functionally identical dual 16-bit 250 MSPS digital-to-analog converters in the same 48-lead LFCSP package, differing only in packaging format (tray vs. tape-and-reel). The AD9746BCPZRL is a valid drop-in replacement for the AD9746BCPZ, with no electrical, thermal, or footprint differences affecting interchangeability.
Resolution and Sample Rate
High match
Package and Pinout
High match
Supply Voltage and Power
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD9746BCPZRL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5608 個数
- Package
- VFQFN-72
- 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 | AD9746BCPZ | AD9746BCPZRL | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Determines the quantization accuracy of the DAC output; both parts share the same resolution so they are functionally interchangeable in this respect. |
| Number of DAC Channels | 2 | 2 | Dual-channel architecture is required for I/Q signal paths; identical channel count confirms drop-in compatibility. |
| Sampling Rate (Max) | 250 MSPS | 250 MSPS | Maximum update rate defines the achievable output bandwidth; matching rates ensure the same signal synthesis capability. |
| Output Type | Current - Unbuffered | Current - Unbuffered | Output architecture dictates the external interface circuitry; identical current-steering outputs allow reuse of the same analog front end. |
| Supply Voltage | 3.13 V to 3.47 V | 3.13 V to 3.47 V | Operating supply range must match the board power rail; identical ranges confirm the same power design can be used. |
| Package / Case | 48-LFCSP (7x7) | 48-LFCSP (7x7) | Footprint and thermal characteristics must match for physical substitutability on an existing PCB. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must be compatible with the production process; both are surface-mount devices. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Thermal envelope determines suitability for industrial environments; identical ratings ensure equivalent reliability. |
| Packaging / Delivery Form | Tray | Tape & Reel (RL) | Delivery format affects manufacturing handling and pick-and-place automation; the RL suffix denotes reel packaging versus tray, though the die and package are identical. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD9746BCPZ | AD9746BCPZRL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Number of Bits | 14 | 14 |
| Number of D/A Converters | 2 | 2 |
| Output Type | Current - Unbuffered | Current - Unbuffered |
| Differential Output | Yes | Yes |
| Data Interface | Parallel | Parallel |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 3.13V ~ 3.47V | 3.13V ~ 3.47V |
| Voltage - Supply, Digital | 1.7V ~ 1.9V, 3.13V ~ 3.47V | 1.7V ~ 1.9V, 3.13V ~ 3.47V |
| INL / DNL(LSB) | ±1, ±0.5 | ±1, ±0.5 |
| Architecture | Quad-Switch | Quad-Switch |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What is the difference between AD9746BCPZ and AD9746BCPZRL?
The AD9746BCPZ and AD9746BCPZRL are the same dual 14-bit, 250 MSPS digital-to-analog converter (DAC) in a 72-lead LFCSP package. The difference is packaging format: AD9746BCPZ is supplied in a tray, while AD9746BCPZRL is supplied in tape-and-reel for automated assembly. Electrical and functional specifications are identical.
Are AD9746BCPZ and AD9746BCPZRL electrically and functionally interchangeable?
Yes. Both order codes refer to the same AD9746 silicon die and package. The "RL" suffix denotes tape-and-reel packaging only; the device specifications, pinout, and performance are the same. They can be used interchangeably in the same PCB design.
What are the key specifications of the AD9746?
The AD9746 is a dual 14-bit, 250 MSPS DAC with an on-chip 1.2 V reference, a maximum update rate of 250 MSPS, and a 72-lead LFCSP package. It operates from 1.8 V and 3.3 V supplies and supports an LVDS-compatible input interface. It is specified over the industrial temperature range of −40°C to +85°C.
Which package do AD9746BCPZ and AD9746BCPZRL use?
Both parts use the 72-lead LFCSP (lead frame chip scale package) with an exposed pad, designated CP-72-2 in Analog Devices documentation. The package is 10 mm × 10 mm with a 0.5 mm lead pitch.
Why would a designer choose the tape-and-reel version AD9746BCPZRL over AD9746BCPZ?
The AD9746BCPZRL tape-and-reel format is intended for high-volume automated pick-and-place assembly lines, where reels feed placement equipment efficiently. The tray version AD9746BCPZ is typically used for prototyping, low-volume runs, or manual assembly.
Do AD9746BCPZ and AD9746BCPZRL have the same moisture sensitivity level and handling requirements?
Yes. Because both order codes contain the same packaged device, they share the same moisture sensitivity level and handling requirements as specified in the Analog Devices datasheet and packaging information. Both should be handled according to the manufacturer's MSL and reflow guidelines.
Can AD9746BCPZ and AD9746BCPZRL be used in the same PCB footprint?
Yes. Since both are the same 72-lead LFCSP device, they share an identical pinout and PCB land pattern. A board designed for one will accept the other without layout changes.