ADC12L066 datasheet(6/36 Pages) TI1

Part #	ADC12L066

Description	450 MHz Bandwidth A/D Converter

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Manufacturer	TI1 [Texas Instruments]

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ADC12L066

SNAS153I – NOVEMBER 2001 – REVISED MARCH 2013

www.ti.com

Converter Electrical Characteristics

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, VCM = 1.0V, fCLK = 66 MHz, tr = tf = 2 ns, CL = 15 pF/pin. Boldface limits apply for TJ = TMIN

to TMAX: all other limits TJ = 25°C

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

Typical

Limits

Units

Symbol

Parameter

Conditions

(4)

(Limits)

STATIC CONVERTER CHARACTERISTICS

Resolution with No Missing Codes

12

Bits

+2.7

LSB (max)

INL

Integral Non Linearity(5)

±1.2

−3

LSB (min)

+1

LSB (max)

DNL

Differential Non Linearity

±0.4

−0.95

LSB (min)

Positive Error

−0.15

±3

%FS (max)

GE

Gain Error

+4

%FS (max)

Negative Error

+0.4

−5

%FS (min)

Offset Error (VIN+ = VIN−)

+0.2

±1.3

%FS (max)

Under Range Output Code

0

Over Range Output Code

4095

REFERENCE AND ANALOG INPUT CHARACTERISTICS

0.5

V (min)

VCM

Common Mode Input Voltage

1.0

1.5

V (max)

(CLK LOW)

8

pF

CIN

VIN Input Capacitance (each pin to GND)

VIN + 1.0 Vdc + 1 VP-P

(CLK HIGH)

7

pF

0.8

V (min)

VREF

Reference Voltage(6)

1.0

1.5

V (max)

Reference Input Resistance

100

M

Ω (min)

(1)

The inputs are protected as shown below. Input voltages above VA or below GND will not damage this device, provided current is limited

per Note 4 under Absolute Maximum Ratings. However, errors in the A/D conversion can occur if the input goes above VA or below

GND by more than 100 mV. As an example, if VA is 3.3V, the full-scale input voltage must be ≤3.4V to ensure accurate conversions.

(2)

To ensure accuracy, it is required that |VA–VD| ≤ 100 mV and separate bypass capacitors are used at each power supply pin.

(3)

With the test condition for VREF = +1.0V (2 VP-P differential input), the 12-bit LSB is 488 µV.

(4)

Typical figures are at TA = TJ = 25°C, and represent most likely parametric norms. Test limits are specified to TI's AOQL (Average

Outgoing Quality Level).

(5)

Integral Non Linearity is defined as the deviation of the analog value, expressed in LSB, from the straight line that passes through

positive and negative full-scale.

(6)

Optimum dynamic performance will be obtained by keeping the reference input in the 0.8V to 1.5V range. The LM4051CIM3-ADJ or the

LM4051CIM3-1.2 bandgap voltage reference is recommended for this application.

6

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