ADS6149 datasheet(9/61 Pages) TI

Numer części	ADS6149

Szczegółowy opis	14-/12-Bit, 250-MSPS ADCs With Integrated Analog Buffer

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Producent	TI [Texas Instruments]

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DIGITAL CHARACTERISTICS – ADS61B49 and ADS61B29

Dn_Dn+1_P

Dn_Dn+1_M

GND

V

OCM

V

OCM

Logic0

V

= –350mV

ODL

(1)

Logic1

V

=350mV

ODH

(1)

T0399-01

ADS61B29

ADS61B49

www.ti.com ......................................................................................................................................... SLWS214A – OCTOBER 2008 – REVISED DECEMBER 2008

The DC specifications refer to the condition where the digital outputs are not switching, but are permanently at a valid logic

level 0 or 1. AVDD = 3.3 V, DRVDD = 1.8 V

ADS61B49/ADS61B29

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

DIGITAL INPUTS – RESET, SCLK, SDATA, SEN(1)

High-level input voltage

All digital inputs support 1.8-V and 3.3-V CMOS

1.3

V

logic levels

Low-level input voltage

0.4

V

SDATA, SCLK(2)

VHigh = 3.3 V

16

High-level input current

µA

SEN(3)

VHigh = 3.3 V

10

SDATA, SCLK

VLow = 0 V

0

Low-level input current

µA

SEN

VLow = 0 V

–20

Input capacitance

4

pF

DIGITAL OUTPUTS – CMOS INTERFACE (Pins D0 to D13 and OVR_SDOUT)

DRVDD

High-level output voltage

with IOH = 1mA

DRVDD

V

-0.1

Low-level output voltage

with IOL = 1mA

0

0.1

V

Output capacitance (internal to device)

2

pF

DIGITAL OUTPUTS – LVDS INTERFACE (Pins D0_D1_P/M to D12_D13_P/M)(4)

VODH, High-level output voltage

(5)

275

350

425

mV

VODL, Low-level output voltage

(5)

–425

–350

–275

mV

Capacitance inside the device, from either output

VOCM, Common-mode output voltage

1

1.2

1.3

V

to ground

Output capacitance

2

pF

(1)

SCLK, SDATA, SEN function as digital input pins in serial configuration mode.

(2)

SDATA, SCLK have internal 200-k

Ω pull-down resistor.

(3)

SEN has internal 100-k

Ω pull-up resistor to AVDD.

(4)

OVR_SDOUT has CMOS output logic levels, determined by DRVDD voltage.

(5)

With external 100-

Ω termination

Figure 1. LVDS Voltage Levels

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Product Folder Link(s): ADS61B29 ADS61B49

Podobny numer części - ADS6149

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