Phillips 7126 ECL/NIM/TTL Translator
OVERVIEW
Description
The model 7126 is a 16-channel level translator packaged in a
double width CAMAC module. It simultaneously converts in any
direction between NIM, TTL and ECL logic families. In addition, a
logical "OR" is possible for the ECL input and the NIM/TTL input. The
input to output is direct coupled with the output duration equal to
the input duration. Each channel has a single input connector which
accepts a fast negative NIM level with 50 ohm input impedance and a
positive TTL level with 500 ohms impedance. This produces a positive
TTL output capable of driving a 50 ohm load and a bridged NIM output
that drives two 50 ohm loads. The NIM output stage is
current-switching which allows pulse clipping and is protected from
damage due to shorted cables.
Input Characteristics
- NIM/TTL 16 inputs, one per channel, LEMO style connector:
- accepts both negative NIM or positive TTL pulses or levels.
NIM: 50 ohms impedance +/-10%; -500 mV threshold; input protected
to +/-8 VDC.
TTL: 500 ohms impedance +/-10%; +1.2 Volt threshold; input
protected to +/-8 VDC.
- ECL Input 16 inputs, one per channel:
- 2 x 17 pin header with lock and eject
feature; accepts complementary ECL inputs; removable 110 ohm
input termination; 200 mV differential threshold.
Output Characteristics
- NIM Outputs. Two NIM outputs per channel:
- bridged -32 mA current switching,
LEMO style connectors; delivers one double amplitude
NIM level or two normal NIM levels into 50 ohms;
1.5 nsec rise and fall times.
- TTL Output. One TTL output per channel:
- LEMO style connector; sources 45 mA
to drive 50 ohm load or 1000 standard TTL loads, sink
current of 100 mA; able to drive 100 standard TTL loads.
3.5 nsec rise and fall times.
- ECL Output. Complementary ECL, one per channel:
- 2 x 17 pin header with lock and eject feature;
drives two 110 ohm ECL loads or up to
30 daisy-chained loads. Normal ECL levels of -800 mV
and -1.7 Volts, 2 nsec rise and fall times.
General Characteristics
- Rate
- DC to 150 MHz for NIM and ECL translation,
DC to 100 MHz for TTL translation.
- Minimum 4 nsec for NIM and ECL translation,
- Pulse Widths 7 nsec for TTL translation.
- Delay
- NIM, TTL or ECL input to NIM or ECL output = 5 nsec.
NIM, TTL or ECL input to TTL output = 10 nsec.
- Power Requirements:
- + 6V @ 450 mA, - 6V @ 1290 mA
+ 24V @ 110 mA, - 24V @ 110 mA
The Whole Phillips 7126 User's Manual: