AD6458ARS datasheet(9/12 Pages) AD

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AD6458

–9–

REV. 0

VARIATION – mV

100

–4.9

–3.9

–2.9

–1.9

–0.9

0.1

1.1

2.1

3.1

4.1

= 0.03mV

= 0.4mV

Figure 23. Demodulation Output Offset Voltage Variation

Histogram with Variation Referred to Offset at VGAIN = 1.2 V

and TA = +25°C, VGAIN = 2.25 V and TA = +25°C

VARIATION – mV

–2.9

3.1

–2.4 –1.9 –1.4 –0.9 –0.4

0.1

0.6

1.1

1.6

2.1

2.6

= 0.1mV

= 0.6mV

Figure 24. Demodulation Output Offset Voltage Variation

Histogram with Variation Referred to Offset at VGAIN = 1.2 V

and TA = +25°C, VGAIN = 0.5 V and TA = +25°C C

VARIATION – mV

–4.9

5.1

–3.9

–2.9

1.1

–1.9

–0.9

0.1

2.1

3.1

4.1

= 0.04mV

= 1.1mV

VARIATION – mV

–4.9

5.1

–3.9

–2.9

1.1

–1.9

–0.9

0.1

2.1

3.1

4.1

= 0.04mV

= 1.1mV

Figure 25. Demodulation Output Offset Voltage Variation

Histogram with Variation Referred to Offset at VGAIN =

1.2 V and TA = +25°C, VGAIN = 0.2 V and TA = +25°C

OFFSET DRIFT – mV

–10

–8

–6

–4

–2

= 0.9mV

= 3.4mV

Figure 26. Demodulation Output Offset Voltage Variation

Histogram with Variation Referred to Offset at VGAIN =

1.2 V and TA = +25°C, VGAIN = 0.2 V and TA = –25°C

OFFSET DRIFT – mV

–10

–8

–6

–4

–2

02468

= –0.04mV

= 3.6mV

Figure 27. Demodulation Output Offset Voltage Variation

Histogram with Variation Referred to Offset at VGAIN =

1.2 V and TA = +25°C, VGAIN = 0.2 V and TA = +85°C

VGAIN – Volts

2.5

0.5

1.0

1.5

2.0

VPOS = 3.0V, TA = +85°C

VPOS = 3.6V, TA = +85°C

VPOS = 3.6V, TA = +25°C

VPOS = 3.6V, TA = –40°C

Figure 28. Power Supply Current vs. Gain Control Volt-

age, VREF = 1.2 V

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