+2.375V, Low-Power, 8-Channel,

Serial 12-Bit ADC

4

_______________________________________________________________________________________

TIMING CHARACTERISTICS

Note 1:

Note 2:

Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has

been calibrated.

Note 3:

External reference (VREF = +2.048V), offset nulled.

Note 4:

Ground “on” channel; sine wave applied to all “off” channels.

Note 5:

Conversion time defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.

Note 6:

Note 7:

Guaranteed by design. Not subject to production testing.

Note 8:

ADC performance is limited by the converter’s noise floor, typically 300µVp-p.

Note 9:

Measured as

DIN to SCLK Setup

ns

400

CS Rise to SSTRB Output Disable

ns

240

CS Fall to SSTRB Output Enable

260

SCLK Fall to SSTRB

ns

300

SCLK Pulse Width Low

ns

300

SCLK Pulse Width High

ns

0

CS to SCLK Rise Hold

ns

200

CS to SCLK Rise Setup

ns

400

CS Rise to Output Disable

ns

240

CS Fall to Output Enable

SCLK Fall to Output Data Valid

ns

0

DIN to SCLK Hold

ns

µs

2.0

Acquisition Time

0

SSTRB Rise to SCLK Rise

ns

200

UNITS

MIN

TYP

MAX

SYMBOL

Internal clock mode only (Note 7)

External clock mode only, Figure 2

External clock mode only, Figure 1

Figure 1

Figure 2

Figure 1

CONDITIONS

Figure 1

ns

20

260

__________________________________________Typical Operating Characteristics

ns

1.25

2.375

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

1.00

2.875

0.75

0.50

3.375

3.125

2.625

∞

CODE = 101010100000

0.90

0.65

-55

-30

70

SUPPLY CURRENT

vs. TEMPERATURE

0.85

0.80

0.75

0.70

TEMPERATURE (

°C)

20

145

120

-5

45

95

∞

CODE = 101010100000

0.50

0.00

INTEGRAL NONLINEARITY

vs. SUPPLY VOLTAGE

0.45

0.40

0.35

0.30

0.25

0.20

0.15

0.10

0.05

2.375

2.875

3.375

3.125

2.625

PARAMETER