Part A
AD2S1210BSTZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4477 Stückzahl
- Package
- LQFP-48
- Series
- Datenerfassung von ADCs-DACs für besonderen Zweck
Replacement verdict
Compatible functional replacement candidate
The AD2S1210ASTZ and AD2S1210BSTZ are functionally equivalent resolver-to-digital converters sharing identical core specifications, with the primary distinction being the operating temperature range. The AD2S1210ASTZ is rated for the industrial temperature range, while the AD2S1210BSTZ is rated for the extended industrial temperature range. Both devices are drop-in compatible in terms of package, pinout, and electrical performance, making the AD2S1210BSTZ a viable replacement for the AD2S1210ASTZ in applications requiring a wider thermal operating window.
Package Type
High match
Pin Configuration
High match
Resolution
High match
Operating Temperature Range
Validation required
Parts at a glance
Part B
AD2S1210ASTZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3827 Stückzahl
- Package
- LQFP-48
- Series
- Datenerfassung von ADCs-DACs für besonderen Zweck
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD2S1210ASTZ | AD2S1210BSTZ | Why it matters |
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Identical manufacturer ensures consistent design support, documentation, and quality standards. |
| Product Category | Data Acquisition - ADCs/DACs - Special Purpose (R/D Converter) | Data Acquisition - ADCs/DACs - Special Purpose (R/D Converter) | Same functional category confirms both are resolver-to-digital converters suitable for the same application class. |
| Resolution | 10, 12, 14, 16 bit (selectable) | 10, 12, 14, 16 bit (selectable) | Matching selectable resolution allows identical position feedback accuracy in motion control loops. |
| Supply Voltage | 5 V analog and digital (4.75 V to 5.25 V) | 5 V analog and digital (4.75 V to 5.25 V) | Same supply requirements mean the power design does not need to change between the two parts. |
| Interface Type | Serial (SPI) and parallel | Serial (SPI) and parallel | Identical host interface options preserve firmware and PCB routing compatibility. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Same temperature range ensures both parts suit the same industrial and automotive environments. |
| Package / Case | 48-LQFP (7x7) | 48-LQFP (7x7) | Identical package footprint allows drop-in replacement without PCB redesign. |
| Mounting Type | Surface Mount | Surface Mount | Same mounting style ensures assembly process compatibility. |
| RoHS Status | RoHS Compliant | RoHS Compliant | Both meet environmental regulations, avoiding compliance issues in global markets. |
| Packaging | Tray | Tray | Same packaging simplifies inventory handling and automated assembly line setup. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD2S1210BSTZ | AD2S1210ASTZ |
|---|---|---|
| Part Status | Active | Active |
| Type | R/D Converter | R/D Converter |
| Number of Channels | 2 | 2 |
| Resolution(Bits) | 10, 12, 14, 16 b | 10, 12, 14, 16 b |
| Data Interface | Serial, Parallel | Serial, Parallel |
| Voltage Supply Source | Analog and Digital | Analog and Digital |
| Voltage - Supply | 4.75V ~ 5.25V | 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 the AD2S1210ASTZ and AD2S1210BSTZ?
The AD2S1210ASTZ and AD2S1210BSTZ are both variable resolution, 10-bit to 16-bit R/D converters from Analog Devices. The primary difference is the operating temperature range: the AD2S1210ASTZ is specified for the industrial temperature range of −40°C to +85°C, while the AD2S1210BSTZ is specified for the automotive temperature range of −40°C to +125°C. Both devices are functionally identical and are supplied in a 48-lead LQFP package.
Are the AD2S1210ASTZ and AD2S1210BSTZ pin-compatible and functionally interchangeable?
Yes. Both devices share the same 48-lead LQFP package, pinout, and functional architecture. They are interchangeable in terms of footprint and function, provided the application's operating temperature requirements are satisfied. The AD2S1210BSTZ should be selected for applications requiring operation above +85°C.
What is the resolution range of the AD2S1210ASTZ and AD2S1210BSTZ?
Both devices provide selectable resolution from 10 bits to 16 bits. The resolution is programmable via the configuration register, allowing the user to optimize between tracking rate and resolution for the specific application.
What is the maximum tracking rate of the AD2S1210ASTZ and AD2S1210BSTZ?
The maximum tracking rate depends on the selected resolution. At 10-bit resolution, the maximum tracking rate is 3125 rps; at 12-bit resolution, it is 1250 rps; at 14-bit resolution, it is 312.5 rps; and at 16-bit resolution, it is 78.125 rps. These specifications apply to both the AD2S1210ASTZ and AD2S1210BSTZ.
What is the input signal range for the AD2S1210ASTZ and AD2S1210BSTZ?
Both devices accept differential sinusoidal input signals with a nominal amplitude of 3.15 V p-p ± 27% for the resolver sine and cosine inputs, and a reference input of 3.6 V p-p ± 10%. The input signal frequency range is 2 kHz to 20 kHz.
What is the supply voltage and power consumption of the AD2S1210ASTZ and AD2S1210BSTZ?
Both devices operate from a single 5 V ± 5% supply (AVDD and DVDD). The typical power consumption is 150 mW. The devices also require a 2.5 V to 5 V logic interface supply (VDRIVE) for the digital I/O.
What are the package and thermal characteristics of the AD2S1210ASTZ and AD2S1210BSTZ?
Both devices are offered in a 48-lead LQFP package with a 7 mm × 7 mm body size. The AD2S1210ASTZ is rated for the industrial temperature range (−40°C to +85°C), while the AD2S1210BSTZ is rated for the automotive temperature range (−40°C to +125°C). The thermal resistance (θJA) is typically 65°C/W for both packages.
Which applications require the AD2S1210BSTZ instead of the AD2S1210ASTZ?
The AD2S1210BSTZ is required for applications where the ambient or junction temperature may exceed +85°C, such as automotive under-hood systems, industrial motor control in high-temperature environments, and aerospace applications. The AD2S1210ASTZ is suitable for standard industrial applications within the −40°C to +85°C range.
Are the AD2S1210ASTZ and AD2S1210BSTZ RoHS compliant?
Yes. Both the AD2S1210ASTZ and AD2S1210BSTZ are RoHS-compliant and lead-free, as indicated by the "Z" suffix in the part number. They are compatible with standard lead-free soldering processes.