The following specifications apply for V

6.0 MHz, R

Ω, source impedance for V

≤ 25Ω, fully-differential input with fixed 1.25V common-mode volt-

age, and minimum acquisition time unless otherwise specified. Boldface limits apply for T

limits T

Symbol

Parameter

Conditions

Typical

(Note 10)

Limits

(Note 11)

Units

8-Bit + Sign and “Watchdog” Mode DC

Common Mode Error

LSB

Multiplexer Channel-to-Channel

Matching

LSB

V

IN+

Non-Inverting Input Range

GND

V (min)

V

V (max)

V

IN−

Inverting Input Range

GND

V (min)

V

V (max)

V

Differential Input Voltage Range

−V

A

+

V (min)

V

V (max)

Common Mode Input Voltage Range

GND

V (min)

V

V (max)

PSS

Power Supply

Sensitivity

(Note 15)

Zero Error

V

LSB (max)

Full-Scale Error

V

LSB (max)

Linearity Error

LSB

C

REF

V

85

pF

C

IN

Selected Multiplexer Channel Input

Capacitance

75

pF

Converter AC Characteristics

The following specifications apply for V

6.0 MHz, R

Ω, source impedance for V

≤ 25Ω, fully-differential input with fixed +1.25V common-mode

voltage, and minimum acquisition time unless otherwise specified. Boldface limits apply for T

limits T

Symbol

Parameter

Conditions

Typical

(Note 10)

Limits

(Note 11)

Units

Clock Duty Cycle

50

40

% (min)

60

% (max)

t

C

Conversion Time

13-Bit Resolution, Sequencer

State S5 (Figure 15)

44 (t

44 (t

(max)

9-Bit Resolution, Sequencer State

S5 (Figure 15)

21 (t

21 (t

(max)

t

A

Acquisition Time

Sequencer State S7 (Figure 15)

Built-in minimum for 13-Bits

9(t

9(t

(max)

Built-in minimum for 9-Bits and

“Watchdog” mode

2(t

2(t

(max)

t

Z

Auto-Zero Time

Sequencer State S2 (Figure 15)76 (t

76 (t

(max)

t

CAL

Full Calibration Time

Sequencer State S2 (Figure 15)

4944 (t

4944 (t

(max)

Throughput Rate (Note 18)

107

106

kHz (min)

t

WD

“Watchdog” Mode Comparison

Time

Sequencer States S6, S4, and S5

(Figure 15)

11 (t

11 (t

(max)

t

PU

Power-Up Time

10

ms

t

WU

Wake-Up Time

10

ms

www.national.com

4