Dual Differential Amplifier 1858-0004; Transistor Array 1858-0018 - HP 5340A Operating And Service Manual

4-99. Dual Differential Amplifier 1858-0004

4-100.
associated constant current sources. The six npn transistors are high frequency devices making
the IC useful to 500 MHz.
4-101. Transistor Array 1858-001 8
4-102. The 1858-0018 (Figure 4-44) contains four transistors and is used as a mixer.
approximately 1.5 GHz.
.
The 1858-0004 (Figure 4-43) consists of two independent differential amplifiers with
Figure 4-43. Dual Differential Amplifier 1858-0004
2 12 1 1
Figure 4-44. Transistor Array 1858-0018
4
10 8 6
7
7 9
1
Model 5340A
Theory of Operation
5 4
9
is
12
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