AD605 datasheet(7/20 Pages) AD

Part #	AD605

Description	Dual, Low Noise, Single-Supply Variable Gain Amplifier

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AD605

Rev. D | Page 7 of 20

TYPICAL PERFORMANCE CHARACTERISTICS (PER CHANNEL)

VREF = 2.5 V (20 dB/V scaling), f = 1 MHz, RL = 500 Ω, CL = 5 pF, TA = 25°C, VSS = 5 V.

40

–20

30

20

10

0

–10

VGN (V)

0.1

0.5

0.9

1.3

1.7

2.1

2.5

2.9

–40°C, +25°C, +85°C

Figure 3. Gain vs. VGN

VGN (V)

50

–20

40

20

10

0

–10

30

FBK (OPEN)

FBK (SHORT)

0.1

0.5

0.9

1.3

1.7

2.1

2.5

2.9

Figure 4. Gain vs. VGN for Different Gain Ranges

30dB/V

(VREF = 1.67V)

20dB/V

(VREF = 2.50V)

ACTUAL

40

–20

30

20

10

0

–10

VGN (V)

0.1

0.5

0.9

1.3

1.7

2.1

2.5

2.9

Figure 5. Gain vs. VGN for Different Gain Scalings

40.0

37.5

20.0

30.0

27.5

25.0

22.5

35.0

32.5

THEORETICAL

ACTUAL

VREF (V)

1.25

1.50

1.75

2.00

2.25

2.50

Figure 6. Gain Scaling vs. VREF

3.0

2.5

–3.0

0.20.71.21.72.22.7

–1.0

–1.5

–2.0

–2.5

2.0

1.0

1.5

–0.5

0.5

0

VGN (V)

+25°C

+85°C

–40°C

Figure 7. Gain Error vs. VGN at Three Temperatures

VGN (V)

2.0

1.5

–2.0

0.2

0.7

1.2

1.7

2.2

2.7

0

–0.5

–1.0

–1.5

1.0

0.5

f = 5MHz

f = 10MHz

f = 1MHz

Figure 8. Gain Error vs. VGN at Three Frequencies

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