SPT7936 datasheet(2/8 Pages) CADEKA

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SPT7936

ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)1 25

°C

Supply Voltages

VDD1 ................................................................... - 0.3 V to +6 V

VDD2 ................................................................... - 0.3 V to +6 V

Input Voltages

Analog In ....................................... - 0.3 V to VDD + 0.3 V

Digital In ........................................ - 0.3 V to VDD + 0.3 V

REFP .................................................... - 0.3 V to VDD + 0.3 V

REFN .................................................... - 0.3 V to VDD + 0.3 V

CLOCK .......................................... - 0.3 V to VDD + 0.3 V

Temperatures

Operating Temperature ................................. 0 to +70

°C

Storage Temperature.. ............................. - 65 to +125

°C

Note:

Operation at any Absolute Maximum Rating is not implied. See Electrical Specifications for proper nominal

applied conditions in typical applications.

ELECTRICAL SPECIFICATIONS

TA = TMIN-TMAX, VDD1 =VDD2 = 3.3 V, Sampling Rate = 28 MSPS, Differential input signal, 50% duty cycle clock with 2.5 ns rise and fall times, unless otherwise

specified.

TEST

SPT7936

PARAMETERS

CONDITIONS

LEVEL

MIN

TYP

MAX

UNITS

DC Accuracy

Differential Nonlinearity (DNL)

±0.5

±1.0

LSB

Integral Nonlinearity

±1.3

±3.0

LSB

Common Mode Rejection Ratio (CMRR)

No Missing Codes

Guaranteed

Analog Input

Input Voltage Range (differential) VFSR

0.6

±1

±1.2

Common Mode Input Voltage VCMI

1.2

1.5

1.6

Input Capacitance CIN

(From Each Input to Ground)

Midscale Offset VOS

VIN+=VIN–=VCM

±2%

Gain Error

-0.2

Input Bandwidth

Large Signal

150

MHz

Reference Voltages

Internal Reference Voltage on Pin 10 (VREFNI)

0.95

1.0

1.05

Internal Reference Voltage on Pin 11 (VREFPI)

1.95

2.0

2.05

Internal Reference Voltage Drift

100

ppm/

°C

Negative Input Voltage (VREF-)

0.9

1.0

1.3

Positive Input Voltage (VREF+)

1.9

2.0

2.3

Reference Input Voltage Range (VREF+ — VREF-)

0.6

1.0

1.2

Common Mode Output Voltage (VCM)

1.45

1.50

1.55

Bandgap Output Voltage (VBGAP)

2.365

2.415

2.465

Dynamic Performance

Effective Number of Bits

fIN = 5.0 MHz

10.0

Bits

fIN = 10.0 MHz

9.2

9.7

Bits

Signal to Noise and Distortion Ratio (SINAD)

fIN = 5.0 MHz

fIN = 10.0 MHz

Signal to Noise Ratio (SNR)

fIN = 5.0 MHz

Without Harmonics

fIN = 10.0 MHz

Total Harmonic Distortion (THD)

fIN = 5.0 MHz

–66

fIN = 10.0 MHz

–64

–61

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