AD604ARS datasheet(5/20 Pages) AD

Nome de Peças	AD604ARS

Descrição Electrónicos	Dual, Ultralow Noise Variable Gain Amplifier

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Typical Performance Characteristics (per Channel)–AD604

(Unless otherwise noted G (preamp) = +14 dB, VREF = 2.5 V (20 dB/V Scaling), f = 1 MHz, RL = 500

, CL = 5 pF, TA = +25 C, VSS =

5V)

VGN – Volts

50

20

–10

0.1

2.9

40

30

10

0

0.5

0.9

1.3

1.7

2.1

2.5

3 CURVES

–40

°C,

+25

°C,

+85

°C

Figure 1. Gain vs. VGN

40

37.5

32.5

30

25

20

22.5

27.5

35

1.25

1.5

1.75

2

2.25

2.5

THEORETICAL

ACTUAL

VREF – Volts

Figure 4. Gain Scaling vs. VREF

VGN – Volts

2.0

0.2

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

0.7

1.2

1.7

2.2

2.7

30dB/V

VREF = 1.67V

20dB/V

VREF = 2.50V

Figure 7. Gain Error vs. VGN for

Different Gain Scalings

VGN – Volts

60

0.1

50

40

30

20

10

0

–10

–20

0.5

0.9

1.3

1.7

2.1

2.5

2.9

G (PREAMP) = +14dB

(0dB – +48dB)

G (PREAMP) = +20dB

(+6dB – +54dB)

DSX ONLY

(–14dB – +34dB)

Figure 2. Gain vs. VGN for Different

Preamp Gains

VGN – Volts

2.0

0.2

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

0.7

1.2

1.7

2.2

2.7

+85

°C

+25

°C

–40

°C

Figure 5. Gain Error vs. VGN at

Different Temperatures

DELTA GAIN – dB

25

–1.0

20

15

10

5

0

–0.8 –0.6 –0.4 –0.2 0.1 0.3 0.5 0.7 0.9

∆G(dB) =

G(CH1) – G(CH2)

VGN1 = 1.0V

VGN2 = 1.0V

N = 50

Figure 8. Gain Match; VGN1 = VGN2 =

1.0 V

VGN – Volts

50

20

–10

0.1

2.9

40

30

10

0

0.5

0.9

1.3

1.7

2.1

2.5

ACTUAL

30dB/V

VREF = 1.67V

20dB/V

VREF = 2.50V

Figure 3. Gain vs. VGN for Different

Gain Scalings

VGN – Volts

2.0

0.2

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

0.7

1.2

1.7

2.2

2.7

FREQ = 5MHz

FREQ = 10MHz

FREQ = 1MHz

Figure 6. Gain Error vs. VGN at

Different Frequencies

DELTA GAIN – dB

25

–1.0

20

15

10

5

0

–0.8 –0.6 –0.4 –0.2 0.1 0.3 0.5 0.7 0.9

∆G(dB) =

G(CH1) – G(CH2)

VGN1 = 2.50V

VGN2 = 2.50V

N = 50

Figure 9. Gain Match: VGN1 = VGN2 =

2.50 V

REV. 0

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