ADC08D502 datasheet(10/43 Pages) TI1

No de pièce	ADC08D502

Description	ADC08D502 High Performance, Low Power, Dual 8-Bit, 500 MSPS A/D Converter

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Fabricant	TI1 [Texas Instruments]

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ADC08D502

SNOSC85 – AUGUST 2012

www.ti.com

Converter Electrical Characteristics (continued)

The following specifications apply after calibration for VA = VDR = +1.9VDC, OutV = 1.9V, VIN FSR (a.c. coupled) = differential

870mVP-P, CL = 10 pF, Differential, a.c. coupled Sinewave Input Clock, fCLK = 500 MHz at 0.5VP-P with 50% duty cycle, VBG =

Floating, Non-Extended Control Mode, SDR Mode, REXT = 3300Ω ±0.1%, Analog Signal Source Impedance = 100Ω

Differential. Boldface limits apply for TA = TMIN to TMAX. All other limits TA = 25°C, unless otherwise noted.

(1) (2)

Typical

Limits

Units

Symbol

Parameter

Conditions

(3)

(Limits)

fIN = 50 MHz, VIN = FSR − 0.5 dB

−60

dB

2nd Harm

Second Harmonic Distortion

fIN = 100 MHz, VIN = FSR − 0.5 dB

−60

dB

fIN = 248 MHz, VIN = FSR − 0.5 dB

−60

dB

fIN = 50 MHz, VIN = FSR − 0.5 dB

−65

dB

3rd Harm

Third Harmonic Distortion

fIN = 100 MHz, VIN = FSR − 0.5 dB

−65

dB

fIN = 248 MHz, VIN = FSR − 0.5 dB

−65

dB

fIN = 50 MHz, VIN = FSR − 0.5 dB

55

dB

SFDR

Spurious-Free dynamic Range

fIN = 100 MHz, VIN = FSR − 0.5 dB

55

47.5

dB (min)

fIN = 248 MHz, VIN = FSR − 0.5 dB

55

47.5

dB (min)

fIN1 = 121 MHz, VIN = FSR − 7 dB

IMD

Intermodulation Distortion

-50

dB

fIN2 = 126 MHz, VIN = FSR − 7 dB

(VIN+) − (VIN−) > + Full Scale

255

Out of Range Output Code

(In addition to OR Output high)

(VIN+) − (VIN−) < − Full Scale

0

ANALOG INPUT AND REFERENCE CHARACTERISTICS

570

mVP-P (min)

FSR pin 14 Low

650

730

mVP-P (max)

Full Scale Analog Differential Input

VIN

Range

790

mVP-P (min)

FSR pin 14 High

870

950

mVP-P (max)

VCMO − 50

mV (min)

VCMI

Analog Input Common Mode Voltage

VCMO

VCMO + 50

mV (max)

Differential

0.02

pF

CIN

Analog Input Capacitance (5) (6)

Each input pin to ground

1.6

pF

94

Ω (min)

RIN

Differential Input Resistance

100

106

Ω (max)

ANALOG OUTPUT CHARACTERISTICS

0.95

V (min)

VCMO

Common Mode Output Voltage

1.26

1.45

V (max)

VA = 1.8V

0.60

V

VCMO input threshold to set DC

VCMO_LVL

Coupling mode

VA = 2.0V

0.66

V

Common Mode Output Voltage

TC VCMO

TA = −40°C to +85°C

118

ppm/°C

Temperature Coefficient

CLOAD

Maximum VCMO load Capacitance

80

pF

VCMO

1.20

V (min)

VBG

Bandgap Reference Output Voltage

IBG = ±100 µA

1.26

1.33

V (max)

Bandgap Reference Voltage

TC VBG

TA = −40°C to +85°C, IBG = ±100 µA

28

ppm/°C

Temperature Coefficient

Maximum Bandgap Reference Load

CLOAD VBG

80

pF

Capacitance

TEMPERATURE DIODE CHARACTERISTICS

192 µA vs. 12 µA,

71.23

mV

TJ = 25°C

ΔVBE

Temperature Diode Voltage

192 µA vs. 12 µA,

85.54

mV

TJ = 85°C

(5)

The analog and clock input capacitances are die capacitances only. Additional package capacitances of 0.65 pF differential and 0.95 pF

each pin to ground are isolated from the die capacitances by lead and bond wire inductances.

(6)

This parameter is guaranteed by design and is not tested in production.

10

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