The document introduces the connection and reference devices for the AD2S1210 rotary digital converter, and provides related circuit evaluation boards and design support. The AD2S1210 is a variable resolution 10-bit to 16-bit R/D converter with a built-in reference oscillator, suitable for providing motor shaft position/velocity feedback information in automotive and industrial applications. The document also introduces a high-current driver for AD2S1210 reference signal output, which uses the AD8662 dual-channel, low-noise, precision operational amplifier and discrete complementary emitter follower output stage.
The document presents circuit notes for the AD2S1210 rotary‑to‑digital converter (RDC). It includes reference circuit diagrams, component selections, and design considerations for driving rotary sensors in automotive and industrial applications. The notes describe a high‑current driver built around AD8662 op‑amps and detail gain setting, common‑mode voltage, and filtering.
Evaluation support is provided through the AD2S1210 evaluation board (EVAL‑AD2S1210EDZ) and the converter development platform (EVAL‑CED1Z). The manual points to additional resources such as data sheets, application notes, and user guides for further design integration.
| Resolution | 10‑bit to 16‑bit |
|---|---|
| Operating Temperature Range | -40 °C to +125 °C |
| Supply Voltage (IC) | 5 V |
| Supply Voltage (Buffer) | 12 V |
| Gain (R1,R2) | 1.54 (R1=10 kΩ, R2=15.4 kΩ) |
| Maximum Tracking Rate | 3,125 tps |
| Position Error (16‑bit) | ±5.3 arc‑minutes |
The AD2S1210 operates from a 5 V supply.
The buffer provides a 3.6 V p‑p sine output that results in a 72 V p‑p differential signal.
It is rated for an extended industrial temperature range from –40 °C to +125 °C.