Analog Devices AD620, C1599c07 specifications Typical Distribution of Input Offset Voltage

AD620

Typical Characteristics (@ +258C, VS = 615 V, RL = 2 kV, unless otherwise noted)

PERCENTAGE OF UNITS

50

SAMPLE SIZE = 360

40

30

20

10

0

–80	–40	0	+40	+80
	INPUT OFFSET VOLTAGE –mV

INPUT BIAS CURRENT – nA

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

+IB

–I

B

–75 –25 25 75 125 175

TEMPERATURE –8C

Figure 3. Typical Distribution of Input Offset Voltage Figure 6. Input Bias Current vs. Temperature

50

SAMPLE SIZE = 850

	40
UNITS	30
OF
PERCENTAGE	20
	10
	0
	–1200	–600	0	+600	+1200
		INPUT BIAS CURRENT – pA

Figure 4. Typical Distribution of Input Bias Current

	50
	SAMPLE SIZE = 850
	40
UNITS	30
OF
PERCENTAGE	20
	10
	0	–200	0	+200	+400
	–400
		INPUT OFFSET CURRENT – pA

Figure 5. Typical Distribution of Input Offset Current

	2
–mV	1.5
VOLTAGE
OFFSETIN	1
CHANGE	0.5
	0

0 1 2 3 4 5

WARM-UP TIME – Minutes

Figure 7. Change in Input Offset Voltage vs. Warm-Up Time

1000
			GAIN = 1
nV/!Hz	100
–			GAIN = 10
NOISE
VOLTAGE	10
		GAIN = 100, 1,000
				GAIN = 1000
				BW LIMIT
	1	10
	1		100	1k	10k	100k
			FREQUENCY – Hz

Figure 8. Voltage Noise Spectral Density vs. Frequency, (G = 1–1000)

REV. E –5–