Part A
AD7609BSTZ-RL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 5621 個数
- Package
- LQFP-64
- Series
- データ取得 - ADC/DAC - 特殊用途向け
Replacement verdict
Compatible functional replacement candidate
AD7609BSTZ and AD7609BSTZ-RL are functionally identical 8-channel, 18-bit bipolar simultaneous-sampling ADCs in the same LQFP-64 package; the only difference is the delivery format, with the -RL suffix denoting tape-and-reel packaging. Either part number can be used interchangeably in the same design, with the choice driven solely by assembly and inventory handling preferences.
Package Type
High match
Channel Count
High match
Resolution
High match
Supply Voltage
High match
Parts at a glance
Part B
AD7609BSTZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7244 個数
- Package
- LQFP-64
- Series
- データ取得 - ADC/DAC - 特殊用途向け
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7609BSTZ | AD7609BSTZ-RL | Why it matters |
|---|---|---|---|
| Number of Channels | 8 | 8 | Determines how many analog input signals the ADC can sample simultaneously; must match for functional substitutability. |
| Resolution | 18 bits | 18 bits | Sets the measurement precision and LSB size; identical resolution ensures equivalent accuracy performance. |
| Sampling Rate | 200 kSPS | 200 kSPS | Defines the maximum throughput per channel; must match to preserve system timing and signal bandwidth. |
| Input Type | Differential, bipolar | Differential, bipolar | Determines signal conditioning and front-end design; identical input topology allows direct board-level replacement. |
| Supply Voltage | 5 V (analog and digital) | 5 V (analog and digital) | Affects power rail design and logic interfacing; matching supplies ensure compatibility with existing circuitry. |
| Package / Case | 64-LQFP | 64-LQFP | Footprint and pinout must match for physical drop-in replacement on the PCB. |
| Interface | SPI / Parallel | SPI / Parallel | Defines host communication protocol; identical interfaces allow reuse of existing firmware and bus wiring. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures the part meets environmental requirements of the target application; must match for equivalent reliability. |
| Packaging / Delivery Form | Tray | Tape & Reel | Affects manufacturing handling and pick-and-place assembly; the -RL variant is reeled for automated production while the base part is trayed. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7609BSTZ-RL | AD7609BSTZ |
|---|---|---|
| Part Status | Active | Active |
| Type | Data Acquisition System (DAS), ADC | Data Acquisition System (DAS), ADC |
| Number of Channels | 8 | 8 |
| Resolution(Bits) | 18 b | 18 b |
| Sampling Rate(Per Second) | 200k | 200k |
| Data Interface | SPI, DSP | SPI, DSP |
| Voltage Supply Source | Analog and Digital | Analog and Digital |
| Voltage - Supply | 2.3V ~ 5V, 4.75V ~ 5.25V | 2.3V ~ 5V, 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD7609BSTZ and AD7609BSTZ-RL?
The AD7609BSTZ and AD7609BSTZ-RL are the same silicon device: an 8-channel, 18-bit, bipolar, simultaneous-sampling ADC. The difference is packaging format. AD7609BSTZ is supplied in trays, while AD7609BSTZ-RL is supplied in tape-and-reel packaging for automated assembly. Both use the same 64-lead LQFP package and are specified over the −40°C to +85°C industrial temperature range.
Are AD7609BSTZ and AD7609BSTZ-RL electrically and functionally identical?
Yes. Both part numbers refer to the same AD7609 die and package. The "-RL" suffix denotes tape-and-reel delivery only; electrical specifications, pinout, package dimensions, and performance characteristics are identical between the two ordering codes.
Can AD7609BSTZ and AD7609BSTZ-RL be used interchangeably in a design?
Yes, from a design perspective they are interchangeable because they share the same 64-lead LQFP footprint, pinout, and electrical specifications. The choice between them is driven by manufacturing requirements: trays for low-volume or hand assembly, and tape-and-reel for high-volume automated pick-and-place lines.
What are the key specifications of the AD7609?
The AD7609 is an 8-channel, 18-bit, bipolar input, simultaneous-sampling analog-to-digital converter. It features true bipolar ±10 V and ±5 V input ranges, an on-chip 18-bit SAR ADC per channel, an on-chip analog input clamp protection, a 2.5 V reference, and flexible parallel/serial interfaces. It operates from a single 5 V supply with a separate VDRIVE supply for the digital interface.
What package does the AD7609BSTZ use?
The AD7609BSTZ is supplied in a 64-lead LQFP (low-profile quad flat package). The same package is used for the AD7609BSTZ-RL tape-and-reel variant. Designers should confirm the exact package outline and land pattern from the official Analog Devices datasheet before layout.
Why would a designer choose the AD7609BSTZ-RL over the AD7609BSTZ?
The AD7609BSTZ-RL is supplied in tape-and-reel, which is preferred for high-volume automated surface-mount assembly because it supports pick-and-place equipment and reduces manual handling. The AD7609BSTZ tray format is typically used for prototyping, low-volume production, or hand assembly.
Do AD7609BSTZ and AD7609BSTZ-RL differ in temperature range or qualification?
No. Both ordering codes are specified over the same industrial temperature range of −40°C to +85°C and share the same qualification and performance specifications. The only documented difference is the delivery packaging format (tray versus tape-and-reel).