Datasheet

AD604
Rev. G | Page 7 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, G (preamplifier) = 14 dB, VREF = 2.5 V (20 dB/V scaling), f = 1 MHz, R
L
= 500 Ω, C
L
= 5 pF, T
A
= 25°C, and
V
SS
= ±5 V.
VGN (V)
50
20
–10
40
30
10
0
GAIN (dB)
0.1 0.5 0.9 1.3 1.7 2.1 2.5 2.9
3 CURVES
–40°C,
+25°C,
+85°C
00540-003
Figure 3. Gain vs. VGN for Three Temperatures
VGN (V)
60
50
40
30
20
10
0
–10
–20
GAIN (dB)
0.1 0.5 0.9 1.3 1.7 2.1 2.5 2.9
G (PREAMP) = +20dB
(+6dB TO +54dB)
DSX ONLY
(–14dB TO +34dB)
G (PREAMP) = +14dB
(0dB TO +48dB)
00540-004
Figure 4. Gain vs. VGN for Different Preamplifier Gains
VGN (V)
50
20
–10
40
30
10
0
GAIN (dB)
0.10.50.91.31.72.12.52.9
ACTUAL
ACTUAL
20dB/V
VREF = 2.5V
30dB/V
VREF = 1.67V
00540-005
Figure 5. Gain vs. VGN for Different Gain Scalings
GAIN SCALING (dB/V)
40.0
37.5
32.5
30.0
25.0
20.0
22.5
27.5
35.0
ACTUAL
VREF (V)
1.25 1.50 1.75 2.00 2.25 2.50
THEORETICAL
00540-006
Figure 6. Gain Scaling vs. VREF
VGN (V)
GAIN ERROR (dB)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0.2 0.7 1.2 1.7 2.2 2.7
+25°C
+85°C
–40°C
00540-007
Figure 7. Gain Error vs. VGN
VGN (V)
GAIN ERROR (dB)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0.2 0.7 1.2 1.7 2.2 2.7
FREQ = 5MHz
FREQ = 1MHz
FREQ = 10MHz
00540-008
Figure 8. Gain Error vs. VGN at Different Frequencies