5

1605fc

LTC1605

ELECTRICAL CHARACTERISTICS

Note 8: Bipolar offset is the offset voltage measured from – 0.5 LSB when

the output code flickers between 0000 0000 0000 0000 and 1111 1111

1111 1111.

Note 9: Guaranteed by design, not subject to test.

Note 10: Recommended operating conditions.

Note 11: With CS low the falling R/C edge starts a conversion. If R/C

returns high at a critical point during the conversion it can create small

errors. For best results ensure that R/C returns high within 3

µs after the

start of the conversion.

Note 12: As measured with fixed resistors shown in Figure 4. Adjustable to

zero with external potentiometer.

Note 13: Full-scale error is the worst-case of –FS or +FS untrimmed

deviation from ideal first and last code transitions, divided by the transition

voltage (not divided by the full-scale range) and includes the effect of

offset error.

Note 14: All specifications in dB are referred to a full-scale

±10V input.

Note 15: Full-power bandwidth is defined as full-scale input frequency at

which a signal-to-(noise + distortion) degrades to 60dB or 10 bits of

accuracy.

Note 16: Recovers to specified performance after (2 • FS) input

overvoltage.

Supply Current vs Supply Voltage

Change in CAP Voltage vs

Load Current

SUPPLY VOLTAGE (V)

4.50

9.5

10.0

10.5

11.0

11.5

12.0

12.5

4.75

5.00

5.25

5.50

1605 • TPC01

LOAD CURRENT (mA)

–25

10

30

50

15

1605 TPC03

–10

–30

0

20

40

–20

–40

–50

–15

–5

5

25

TEMPERATURE (

°C)

–50

10.0

10.5

11.0

11.5

12.0

–25

0

25

50

1605 • TPC02

75

100

Supply Current vs Temperature

Typical INL Curve

CODE

0

65535

1605 • TPC04

16384

32768

49152

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

CODE

0

65535

1605 • TPC05

16384

32768

49152

2.0

1.5

1.0

0.5

0

–0.5

–1.0

–1.5

–2.0

Power Supply Feedthrough vs

Ripple Frequency

Typical DNL Curve

RIPPLE FREQUENCY (Hz)

–70

–60

–50

–40

–30

–20

1M

1605 • TPC06

1

100

10

1k

100k

10k