ADS6422 查看數據表（PDF） - STMicroelectronics

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ADS6422

QUAD CHANNEL, 14-BIT, 125/105/80/65 MSPS ADC WITH SERIAL LVDS OUTPUTS

STMicroelectronics 

www.ti.com

ADS6445, ADS6444

ADS6443, ADS6442

SLAS531 – MAY 2007

ELECTRICAL CHARACTERISTICS

Typical values are at 25°C, min and max values are across the full temperature range TMIN = –40°C to TMAX = 85°C, AVDD =

LVDD = 3.3V, maximum rated sampling frequency, 50% clock duty cycle, –1dBFS differential analog input, internal reference

mode (unless otherwise noted).

PARAMETER

RESOLUTION

ANALOG INPUT

Differential input voltage range

Differential input capacitance

Analog input bandwidth

ADS6445

Analog input common mode current (per ADS6444

input pin of each ADC)

ADS6443

ADS6442

REFERENCE VOLTAGES

VREFB Internal reference bottom voltage

VREFT Internal reference top voltage

∆VREF Internal reference error (VREFT–VREFB)

VCM Common mode output voltage

VCM output current capability

DC ACCURACY

No missing codes

EO

Offset error, across devices and across channels within a device

Offset error temperature coefficient, across devices and across channels within a device

There are two sources of gain error - internal reference inaccuracy and channel gain

error

EGREF Gain error due to internal reference inaccuracy alone, (∆VREF /2.0) %

Reference gain error temperature coefficient

EGCHAN Gain error of channel alone, across devices and across channels within a device(1)

Channel gain error temperature coefficient, across devices and across channels within a

device

DNL Differential nonlinearity, Fin = 50 MHz

ADS6445 and ADS6444

ADS6443 and ADS6442

INL

Integral nonlinearity, Fin = 50 MHz

ADS6445 and ADS6444

ADS6443 and ADS6442

PSRR DC power supply rejection ratio

POWER SUPPLY

ADS6445

ICC

Total supply current

ADS6444

ADS6443

ADS6442

ADS6445

IAVDD Analog supply current

ADS6444

ADS6443

ADS6442

ADS6445

ILVDD LVDS supply current

ADS6444

ADS6443

ADS6442

MIN

TYP

14

2.0

7

500

155

130

100

81

1.0

2.0

-15

±2

1.5

±4

Assured

–15

±2

0.05

-0.75

–1

0.1

0.0125

±0.3

0.005

–0.9

±0.6

–0.9

±0.5

-5

±3

4.5

±2

0.5

502

410

360

320

410

322

280

245

92

88

80

75

MAX

15

15

0.75

1

2.0

1.8

5

4.5

UNIT

Bits

VPP

pF

MHz

µA

V

V

mV

V

mA

mV

mV/°C

% FS

∆%/°C

% FS

∆%/°C

LSB

LSB

mV/V

mA

mA

mA

(1) This is specified by design anad characterization; it is not tested in production.

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