PWM-84C-30B MERRIMAC | Alldatasheet

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PWM-84C Series PHASE SHIFTERS, DIGITAL 30 to 2500 MHz / 360 Range / 1.4 Resolution / 8-bit TTL Input / Monotonic / SMA Connectors Fo r f u rther infor m at ion contact MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531 PRINCIPAL SPECIFICATIONS Center Model Frequency, Operating Number fc, MHz Bandwidth PWM-84C-*B 30 - 200 30% of f o PWM-84C-B 200 - 2500 10% of f o For complete Model Number replace * with desired center frequency in MHz GENERAL SPECIFICATIONS Phase Characteristics: Minimum Shift: 0° to 360° in 255 steps @ f c Phase Accuracy, typ: ±15° ( ±30°above 1 GHz) (Guaranteed Monotonic) RF Characteristics: Impedance: 50 Ω nom. VSWR: 2.0:1 max. Insertion Loss: 2 dB nom, 3 dB max. (3 dB nom, 4.5 dB max above 1 GHz) Loss Var. vs. Phase:1 dB (1.5 dB above 1 GHz) Max. Input Power: +10 dBm Control Characteristics: Control Input : 8 Bit TTL Settling Time: 3 µs max. Supply Power: ±15 VDC @ 100 mA max. Weight, nominal: 4.5 oz (125 g) Operating Temp.: -- 55° to +85°C General Notes: 1. Phase Shifters in the PWM-84C series provide a minimum of 360° phase shift in 8 binary increments (255 steps) of approximately 1.4° each. Phase shift is produced using a series of frequency independent analog phase shifters which are driven by an 8-bit D/A converter. This method, unlike conventional switched cable designs is guaranteed to be monotonic even at higher frequencies. 2. The monotonic feature of this design is advantageous when used for control applications in closed loop systems.

1 Bit 8 (MSB)

2 Bit 7

3 Bit 6

4 Bit 5

5 Bit 4

6 Bit 3

7 Bit 2

8 Bit 1 (LSB)

9 (NC) 10 -15V 11 (NC)

12 GND

13 (NC) 14 (NC) 15 +15V Connector J3 Pinout J3 Pin Function Bit Step LSB 1 1.4° 2 2.8° 3 5.6° 4 11.2° 5 22.5° 6 45° 7 90° MSB 8 180° Ideal phase characteristic Typical phase characteristic NOTES: 1. Tolerance on 3 place decimals ±.020(.51) except as noted. 2. Dimensions in inches over millimeters. 26Apr96