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