TwinBase NP15-0530   Product Description

Negative high voltage generator with analog gain control

Targeted application:

1. Precision spectroscopy at low and high average PMT anode currents, up to 50 μA DC.
2. Local MCA. The eMorpho MCA or other control logic is located inside the detector housing. The MCA uses an analog control voltage to adjust the high voltage.

Supply voltage:

The device is fully specified for supply voltages in the range from 1.80 V to 5.50 V. This includes common digital standards, such as CMOS 2.50 V ±5%, CMOS 3.30 V ±5%, TTL 5.00 V ±5% and USB: 4.35 V to 5.50 V.

Low power:

The supply current is very nearly proportional to the PMT high voltage. At HV = 1000 V the supply current is 37 mA.

Standby mode:

When the high voltage is set to zero the supply current reduces to a mere 0.11 mA.

Mechanical:

The NP15-0530 is mounted on a JEDEC B14 socket and assumes a standard 10-stage PMT pin out. Pins 1 through 10 are the dynodes D1 through D10, respectively. Pin 11 is the anode. Pin 12 is a no connect. Pin 13 is the focus electrode, which is tied to the cathode on pin 14. Including the socket, the TwinBase is about 2.2 inches tall.

Related devices:

• The NP10-0530 requires at least 3.10 V supply voltage, but does include digital HV-control and a digital temperature sensor.
• The NP10-1220 can accept up to 16 V supply voltage and includes digital HV-control and a digital temperature sensor.