ADC12L080 datasheet(8/31 Pages) TI1

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ADC12L080

SNAS200B – OCTOBER 2004 – REVISED MARCH 2013

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DC and Logic Electrical Characteristics (continued)

Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA = VD = +3.3V, VDR =

+2.5V, PD = 0V, VREF = +1.0V external, VCM = 1.65V, RS < 100Ω, fCLK = 80 MHz, tr = tf = 2 ns, fIN = 70 MHz, CL = 15 pF/pin.

Boldface limits apply for TJ = TMIN to TMAX: all other limits TJ = 25°C

(1)(2)(3)(4)

Units

Symbol

Parameter

Conditions

Typical(4)

Limits(4)

(Limits)

CLK, PD, OF DIGITAL INPUT CHARACTERISTICS

VIN(1)

Logical “1” Input Voltage

VD = 3.3V

2.0

V (min)

VIN(0)

Logical “0” Input Voltage

VD = 3.3V

0.8

V (max)

IIN(1)

Logical “1” Input Current

VIN+, VIN− = 3.3V

µA

IIN(0)

Logical “0” Input Current

VIN+, VIN− = 0V

−10

µA

CIN

Digital Input Capacitance

D0–D11 DIGITAL OUTPUT CHARACTERISTICS

VOUT(1)

Logical “1” Output Voltage

IOUT = −0.5 mA

VDR − 0.18

V (min)

VOUT(0)

Logical “0” Output Voltage

IOUT = 1.6 mA

0.4

V (max)

+ISC

Output Short Circuit Source Current

VOUT = 0V

−20

−ISC

Output Short Circuit Sink Current

VOUT = 2.5V

POWER SUPPLY CHARACTERISTICS

PD Pin = DGND

120

168

mA (max)

Analog Supply Current

PD Pin = VDR

PD Pin = DGND

11.5

mA (max)

Digital Supply Current

PD Pin = VDR

PD Pin = DGND, fin = 0

(5) (6)

IDR

Digital Output Supply Current

PD Pin = VDR

PD Pin = DGND, CL = 0 pF

(7)

425

590

mW (max)

Total Power Consumption

PD Pin = VDR

Rejection of Full-Scale Gain Error

PSRR1 Power Supply Rejection Ratio

change with VA = 3.0V vs. 3.6V

(5)

IDR is the current consumed by the switching of the output drivers and is primarily determined by load capacitance on the output pins,

the supply voltage, VDR, and the rate at which the outputs are switching (which is signal dependent). IDR=VDR(C0 x f0 + C1 x f1 +....C11 x

f11) where VDR is the output driver power supply voltage, Cn is total capacitance on the output pin, and fn is the average frequency at

which that pin is toggling.

(6)

When the input voltage at any pin exceeds the power supplies (that is, VIN < AGND, or VIN > VA, VD or VDR), the current at that pin

should be limited to 25 mA. The 50 mA maximum package input current rating limits the number of pins that can safely exceed the

power supplies with an input current of 25 mA to two.

(7)

Power consumption excludes output driver power. See Note 5.

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