ADC081500 datasheet(9/47 Pages) TI1

Il numero della parte	ADC081500

Spiegazioni elettronici	High Performance, Low Power, 8-Bit, 1.5 GSPS A/D Converter

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Produttore elettronici	TI1 [Texas Instruments]

Homepage	http://www.ti.com

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9 / 47 page

I / O

GND

V

A

TO INTERNAL

CIRCUITRY

ADC081500

www.ti.com

SNAS319G – JUNE 2005 – REVISED APRIL 2013

Converter Electrical Characteristics

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

differential 870mVP-P, CL = 10 pF, Differential (a.c. coupled) sinewave input clock, fCLK = 1.5 GHz at 0.5VP-P with 50% duty

cycle, VBG = Floating, Normal Control Mode, Single Data Rate Mode, REXT = 3300Ω ±0.1%, Analog Signal Source Impedance

= 100

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

(1) (2)

Units

Symbol

Parameter

Conditions

Typical(3)

Limits(3)

(Limits)

STATIC CONVERTER CHARACTERISTICS

DC Coupled, 1MHz Sine Wave

INL

Integral Non-Linearity (Best fit)

±0.3

±0.9

LSB (max)

Over ranged

DC Coupled, 1MHz Sine Wave

DNL

Differential Non-Linearity

±0.15

±0.6

LSB (max)

Over ranged

Resolution with No Missing Codes

8

Bits

−1.5

LSB (min)

VOFF

Offset Error

-0.45

1.0

LSB (max)

VOFF_ADJ

Input Offset Adjustment Range

Extended Control Mode

±45

mV

PFSE

Positive Full-Scale Error

See (4)

−0.6

±25

mV (max)

NFSE

Negative Full-Scale Error

See (4)

−1.31

±25

mV (max)

FS_ADJ

Full-Scale Adjustment Range

Extended Control Mode

±20

±15

%FS

DYNAMIC CONVERTER CHARACTERISTICS

FPBW

Full Power Bandwidth

1.7

GHz

B.E.R.

Bit Error Rate

10-18

Error/Sample

d.c. to 500 MHz

±0.5

dBFS

Gain Flatness

d.c. to 1 GHz

±1.0

dBFS

fIN = 373 MHz, VIN = FSR − 0.5 dB

7.4

7.0

Bits (min)

ENOB

Effective Number of Bits

fIN = 748 MHz, VIN = FSR − 0.5 dB

7.3

Bits (min)

fIN = 373 MHz, VIN = FSR − 0.5 dB

46.3

43.9

dB (min)

Signal-to-Noise Plus Distortion

SINAD

Ratio

fIN = 748 MHz, VIN = FSR − 0.5 dB

45.4

dB (min)

fIN = 373 MHz, VIN = FSR − 0.5 dB

47

44.5

dB (min)

SNR

Signal-to-Noise Ratio

fIN = 748 MHz, VIN = FSR − 0.5 dB

46.3

dB (min)

fIN = 373 MHz, VIN = FSR − 0.5 dB

-54.5

-47

dB (max)

THD

Total Harmonic Distortion

fIN = 748 MHz, VIN = FSR − 0.5 dB

-53

dB (max)

fIN = 373 MHz, VIN = FSR − 0.5 dB

−60

dB

2nd Harm

Second Harmonic Distortion

fIN = 748 MHz, VIN = FSR − 0.5 dB

-57

dB

(1)

The analog inputs are protected as shown below. Input voltage magnitudes beyond the Absolute Maximum Ratings may damage this

device.

(2)

To specify accuracy, it is required that VA and VDR be well bypassed. Each supply pin must be decoupled with separate bypass

capacitors. Additionally, achieving rated performance requires that the backside exposed pad be well grounded.

(3)

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

Quality Level).

(4)

Calculation of Full-Scale Error for this device assumes that the actual reference voltage is exactly its nominal value. Full-Scale Error for

this device, therefore, is a combination of Full-Scale Error and Reference Voltage Error. See Figure 1. For relationship between Gain

Error and Full-Scale Error, see Specification Definitions for Gain Error.

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