AD604

Rev. E | Page 7 of 32
VGN (V)
–10
TYPICAL PERFORMANCE CHARACTERISTICS

Unless otherwise noted, G (preamplifier) = 14 dB, VREF = 2.5 V (20 dB/V scaling), f = 1 MHz, RL = 500 Ω, CL = 5 pF, TA = 25°C, and

VSS = ±5 V.

GAIN SCALING (dB/V)
40.0
37.5
32.5
30.0
25.0
20.0
22.5
27.5
35.0
50
20
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
GAIN (dB)
–20
0.1 0.5 0.9 1.3 1.7 2.1 2.5 2.9
G(PREAMP) = + 20dB
(+6dBTO +54d B)
DSX ONLY
(–14dBTO + 34dB)
G(PREAMP) = +14dB
(0dBTO +48d B)
00540-004

Figure 4. Gain vs. VGN for Different Preamplifier Gains

VGN(V)
–10
50
20
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

ACTUAL
VREF(V)
THEORETICAL
1.25 1.50 1.75 2.00 2.25 2.50
00540-006
VGN(V)
GAIN ERROR (dB)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0

Figure 6. Gain Scaling vs. VREF

0.2 0.7 1.2 1.7 2.2 2.7
+25°C
–40°C
+85°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