ADS-946 データシートの表示（PDF） - DATEL Data Acquisition products

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ADS-946

14-Bit, 8MHz, sampling A/D converter

DATEL Data Acquisition products  

ADS-946

®

®

ABSOLUTE MAXIMUM RATINGS

PARAMETERS

LIMITS

UNITS

PHYSICAL/ENVIRONMENTAL

PARAMETERS

MIN. TYP.

MAX. UNITS

+5V Supply (Pins 13, 22)

0 to +6

Volts

–5V Supply (Pin 20)

0 to –6

Volts

Digital Input (Pin 18)

–0.3 to +VDD +0.3

Volts

Analog Input (Pin 21)

±5

Volts

Lead Temperature (10 seconds)

+300

°C

Operating Temp. Range, Case

ADS-946MC, GC

ADS-946MM, GM, 883, G/883

Thermal Impedance

θjc

θca

Storage Temperature Range

Package Type

Weight

FUNCTIONAL SPECIFICATIONS

(TA = +25°C, ±VDD = ±5V, 8MHz sampling rate, and a minimum 3 minute warmup Œ unless otherwise specified.)

0

—

+70

°C

–55

—

+125

°C

—

6

—

°C/Watt

—

23

—

°C/Watt

–65

—

+150

°C

24-pin, metal-sealed, ceramic DDIP or SMT

0.42 ounces (12 grams)

ANALOG INPUT

MIN.

+25°C

TYP.

MAX.

0 to +70°C

MIN. TYP. MAX.

–55 to +125°C

MIN.

TYP.

MAX.

UNITS

Input Voltage Range 

Input Resistance

Input Capacitance

—

±2

—

—

200

—

—

6

15

—

±2

—

—

200

—

—

6

15

—

±2

—

Volts

—

200

—

Ω

—

6

15

pF

DIGITAL INPUT

Logic Levels

Logic "1"

+2.0

—

—

+2.0

—

—

+2.0

—

—

Volts

Logic "0"

—

—

+0.8

—

—

+0.8

—

—

+0.8

Volts

Logic Loading "1"

—

—

+20

—

—

+20

—

—

+20

µA

Logic Loading "0"

—

—

–20

—

—

–20

—

—

–20

µA

Start Convert Positive Pulse Width Ž

10

20

—

10

20

—

10

20

—

ns

STATIC PERFORMANCE

Resolution

Integral Nonlinearity (fin = 10kHz)

Differential Nonlinearity (fin = 10kHz)

Full Scale Absolute Accuracy

Bipolar Zero Error (Tech Note 2)

Gain Error (Tech Note 2)

No Missing Codes (fin = 10kHz)

—

—

–0.95

—

—

—

14

14

±0.75

±0.5

±0.15

±0.2

±0.2

—

—

—

+1.25

±0.4

±0.4

±0.75

—

—

—

–0.95

—

—

—

14

14

±0.75

±0.5

±0.15

±0.2

±0.2

—

—

—

+1.25

±0.4

±0.4

±0.75

—

—

—

–0.95

—

—

—

14

14

±1

±0.75

±0.4

±0.4

±0.4

—

—

—

+1.99

±0.8

±0.65

±1.25

—

Bits

LSB

LSB

%FSR

%FSR

%

Bits

DYNAMIC PERFORMANCE

Peak Harmonics (–0.5dB)

dc to 500kHz

500kHz to 1MHz

1MHz to 4MHz

Total Harmonic Distortion (–0.5dB)

dc to 500kHz

500kHz to 1MHz

1MHz to 4MHz

Signal-to-Noise Ratio

(w/o distortion, –0.5dB)

dc to 500kHz

500kHz to 1MHz

1MHz to 4MHz

Signal-to-Noise Ratio 

(& distortion, –0.5dB)

dc to 500kHz

500kHz to 1MHz

1MHz to 4MHz

Noise

Two-Tone Intermodulation

Distortion (fin = 2.45MHz,

1.975MHz, fs = 8MHz, –0.5dB)

Input Bandwidth (–3dB)

Small Signal (–20dB input)

Large Signal (–0.5dB input)

Feedthrough Rejection (fin = 4MHz)

Slew Rate

Aperture Delay Time

Aperture Uncertainty

—

–76

–72

—

–75

–72

—

–75

–71

—

–75

–71

—

–75

–70

—

–75

–70

73

77

—

73

77

—

73

77

—

70

74

—

69

73

—

69

73

—

—

150

—

—

–82

—

—

30

—

—

10

—

—

85

—

—

±400

—

—

+5

—

—

2

—

—

–76

–72

—

–75

–72

—

–75

–71

—

–75

–71

—

–75

–70

—

–75

–70

73

77

—

73

77

—

73

77

—

70

74

—

69

73

—

69

73

—

—

150

—

—

–82

—

—

30

—

—

10

—

—

85

—

—

±400

—

—

+5

—

—

2

—

—

–74

–70

dB

—

–74

–68

dB

—

–69

–65

dB

—

–74

–70

dB

—

–72

–68

dB

—

–69

–64

dB

72

76

—

dB

72

76

—

dB

72

76

—

dB

68

73

—

dB

65

70

—

dB

65

70

—

dB

—

150

—

µVrms

—

–82

—

30

—

10

—

85

—

±400

—

+5

—

2

—

dB

—

MHz

—

MHz

—

dB

—

V/µs

—

ns

—

ps rms

2

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