Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_27277284_27 (voltage VARCHAR, order_part_number VARCHAR)

### Question ###
What is the operating voltage of part number amql64dam22gg?

### Accurate SQL ###

SELECT voltage FROM table_27277284_27 WHERE order_part_number = "AMQL64DAM22GG"