4

LTC1605-1/LTC1605-2

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Maximum Sampling Frequency

q

100

kHz

Conversion Time

q

8

µs

Acquisition Time

q

2

µs

Convert Pulse Width

(Note 11)

q

40

ns

Data Valid Delay After R/C

↓

(Note 9)

q

8

µs

BUSY Delay from R/C

↓

q

65

ns

BUSY Low

8

µs

BUSY Delay After End of Conversion

220

ns

Aperture Delay

40

ns

Bus Relinquish Time

q

10

35

83

ns

BUSY Delay After Data Valid

q

50

200

ns

Previous Data Valid After R/C

↓

7.4

µs

R/C to CS Setup Time

(Notes 9, 10)

10

ns

Time Between Conversions

10

µs

Bus Access and Byte Delay

(Notes 9, 10)

10

83

ns

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Positive Supply Voltage

(Notes 9, 10)

4.75

5.25

V

Positive Supply Current

q

11

16

mA

Power Dissipation

55

80

mW

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: All voltage values are with respect to ground with DGND, AGND1

and AGND2 wired together (unless otherwise noted).

without latch-up.

Note 4: When these pin voltages are taken below ground, they will be

clamped by internal diodes. This product can handle input currents of

specified.

with respect to ground.

Note 7: Integral nonlinearity is defined as the deviation of a code from a

straight line passing through the actual end points of the transfer curve.

The deviation is measured from the center of the quantization band.

Note 8: Zero error for the LTC1605-1 is the voltage measured from

0.5LSB when the output code flickers between 0000 0000 0000 0000

and 0000 0000 0000 0001. Zero error for the LTC1605-2 is the voltage

measured from – 0.5LSB 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 untrimmed deviation from ideal last code

transition, 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 4V input for the

LTC1605-1 and to

±4V input for the LTC1605-2.

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 (

±20V) input

overvoltage for the LTC1605-1 and

±15V for the LTC1605-2.

TI I G CHARACTERISTICS

POWER REQUIRE E TS