V

A

AGND

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I/O

8

ADC14155QML-SP

SNAS378L – NOVEMBER 2008 – REVISED FEBRUARY 2019

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(1)

Pre and post irradiation limits are identical to those listed in the Electrical Characteristics tables. Radiation testing is performed per MIL-

STD-883, Test Method 1019.

(2)

The inputs are protected as shown below. Input voltage magnitudes above VA or below GND will not damage this device, provided

current is limited per Note 5. However, errors in the A/D conversion can occur if the input goes above 2.6V or below GND as described

in the Recommended Operating Conditions section.

(3)

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

(4)

With the test condition for VREF = 1 V (2-VP-P differential input), the 14-bit LSB is 122.1 µV.

(5)

When the input voltage at any pin exceeds the power supplies (that is, VIN < AGND, or VIN > VA), the current at that pin should be

limited to ±5 mA. The ±50 mA maximum package input current rating limits the number of pins that can safely exceed the power

supplies with an input current of ±5 mA to 10.

(6)

Typical figures are at TA = 25°C and represent most likely parametric norms at the time of product characterization. The typical

specifications are not ensured.

6.6 ADC14155 Converter Electrical Characteristics (Continued) DYNAMIC Parameters

(1)

Unless otherwise specified, the following specifications apply: AGND = DGND = DRGND = 0 V, VA = VD = 3.3 V, VDR = 1.8 V,

Internal VREF = 1 V, fCLK = 155 MHz, VCM = VRM, CL = 5 pF/pin, Differential Analog Input, Single-Ended Clock Mode, Offset

Binary Format. Typical values are for TA = 25°C.

(2) (3) (4) (5)

PARAMETER

TEST CONDITIONS

NOTES

TYP(6)

MIN

MAX

UNITS

SUB-

GROUPS

DYNAMIC CONVERTER CHARACTERISTICS, AIN = -1 dBFS

FPBW

Full power bandwidth

-1 dBFS Input, -3 dB Corner

1.1

GHz

SNR

Signal-to-noise ratio

fIN = 10 MHz

69

dBFS

fIN = 70 MHz

70.1

66.7

dBFS

[4, 5, 6]

fIN = 169 MHz

68.5

dBFS

fIN = 238 MHz

68.5

dBFS

fIN = 398 MHz

66.4

dBFS

SFDR

Spurious free dynamic

range

fIN = 10 MHz

82

dBFS

fIN = 70 MHz

82.3

68.2

dBFS

[4, 5, 6]

fIN = 169 MHz

80.5

dBFS

fIN = 238 MHz

77.3

dBFS

fIN = 398 MHz

63.5

dBFS

ENOB

Effective number of bits

fIN = 10 MHz

11.3

Bits

fIN = 70 MHz

11.3

10.7

Bits

[4, 5, 6]

fIN = 169 MHz

11.0

Bits

fIN = 238 MHz

11.0

Bits

fIN = 398 MHz

10.0

Bits

THD

Total harmonic disortion

fIN = 10 MHz

–81

dBFS

fIN = 70 MHz

–79.9

–67

dBFS

[4, 5, 6]

fIN = 169 MHz

–82.4

dBFS

fIN = 238 MHz

–76.6

dBFS

fIN = 398 MHz

–63.2

dBFS

HD2

Second-order harmonic

distortion

fIN = 10 MHz

–95.4

dBFS

fIN = 70 MHz

–88.5

–70

dBFS

[4, 5, 6]

fIN = 169 MHz

–88.3

dBFS

fIN = 238 MHz

–77.3

dBFS

fIN = 398 MHz

–60.9

dBFS