MAX110 datasheet(6/24 Pages) MAXIM

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Low-Cost, 2-Channel, ±14-Bit Serial ADCs

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Note 10: Timing specifications are guaranteed by design. All input control signals are specified with tr = tf = 5ns

(10% to 90% of +5V) and timed from a +1.6V voltage level.

Note 1: These specifications apply after auto-null and gain calibration. Performance at power-supply tolerance limits is guaranteed

by power-supply rejection tests. Tests are performed at VDD = 5V and VSS = -5V (MAX110).

Note 2: 32,768 LSBs cover an input voltage range of ±VREF (15 bits). An additional bit (OFL) is set for VIN > VREF.

Note 3: Guaranteed by design. Not subject to production testing.

Note 4: DNL is less than ±2 counts (LSBs) out of 215 counts (±14 bits). The major source of DNL is noise, and this can be further

improved by averaging.

Note 5: See

3-Step Calibration section in text.

Note 6: VREF = (VREF+ - VREF-), VIN = (VIN1+ - VIN1-) or (VIN2+ - VIN2-). The voltage is interpreted as negative when the voltage at

the negative input terminal exceeds the voltage at the positive input terminal.

Note 7: Conversion time is set by control bits CONV1–CONV4.

Note 8: Tested at clock frequency of 1MHz with the divide-by-2 mode (i.e. oversampling clock of 500kHz). See

Typical Operating

Characteristics section for the effect of other clock frequencies. Also read the Clock Frequency section.

Note 9: This current depends strongly on CXCLK (see Applications Information section).

TIMING CHARACTERISTICS (see Figure 6)

(VDD = 5V, VSS = -5V (MAX110), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

MHz

1.1

3.0

MAX11_ BM

RC Oscillator Frequency

1.3

2.8

MAX11_ _C/E

2.0

TA = +25°C

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

CS to SCLK Hold Time

(Note 10)

tCSH

DIN to SCLK Setup Time

(Note 10)

tDS

100

DIN to SCLK Hold Time

(Note 10)

tDH

100

CS to SCLK Setup Time

(Note 10)

tCSS

100

120

SCLK, XCLK Pulse Width

(Note 10)

tCK

160

035

100

Data Access Time

(Note 10)

tDA

120

100

120

SCLK to DOUT Valid

Delay (Note 10)

tDO

140

Bus Relinquish Time

(Note 10)

tDH

120

MAX11_ BM

MAX11_ _C/E

TA = +25°C

MAX11_ BM

MAX11_ _C/E

CONDITIONS

MAX11_ _C/E

MAX11_ BM

TA = +25°C

MAX11_ BM

TA = +25°C

CLOAD = 50pF

TA = +25°C

CLOAD = 50pF

MAX11_ _C/E

TA = +25°C

MAX11_ BM

TA = +25°C

MAX11_ _C/E/M

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