Fig. 2(c) --- LOG AND OUTPUT STAGE LAYOUTS
COMPONENT
VALUE
PURPOSE
R13 (P7)
FS (once) (sec. 5.3.8)
LINEAR EXTENSION
R14
400 ohms
LINEAR EXTN. BIAS CURRENT
R15
FS (once) (sec. 8.3)
OUTPUT GAIN (SLOPE) ADJUST
R16 (P5)
FS (sec. 5.3.7)
OUTPUT DC ADJUST
R17
FS (once) (about 2.2k)
OUTPUT FEEDBACK BALANCE
R18
FS (once)**; also sec 6.3
OUTPUT PULSE SHAPING
R19
FS (once)** (p35 list B)
OUTPUT PULSE SPEEDUP
R20
FS (once) (sec. 8.3)
OUTPUT GAIN (SLOPE) ADJUST
R100
FS (once) (100k pot)
LOG 1 CURRENT ADJUST
R110
FS (once) 100k pot; 5.3.8
LOG 6 CURRENT ADJUST
RT3
FS (sec. 8.3.1 - 8.3.3)
OUTPUT BASELINE TEMP. CORR.
RT4
FS (sec. 8.3.1 - 8.3.3)
OUTPUT BASELINE TEMP. CORR.
S1
500-ohm sens., .007/degC
OUTPUT SLOPE TEMP. CORR.
S2
12k sensistor, .007/degC
OUTPUT BASELINE TEMP. CORR.
C13
100 pF
LOG COMPENSATION
C14
FS (once); 0-10 pF; 2.5
OUTPUT COMPENSATION
C15
FS (once); 0-3 pF; 2.5
ALTERNATIVE OUTPUT SPEEDUP
C16
FS (once); 0-3 pF; 2.5
ALTERNATIVE OUTPUT SLOWDOWN
C17
FS (once)** ~2pF; sec 6.3
PULSE SHAPING
C18
FS (once) 0-3 pF; sec 2.5
OUTPUT SPEEDUP (p35 list B)
C19
FS (once)** (p35 list B)
PULSE SHAPING
Q1
NPN (e.g. 2N5109, 2N3960)
OUTPUT DRIVER
**
For selection of these values, see section 4.1 (pulse-shaping).
 |
 |
 |
 |
 |