®

®

ADS-941

2

OUTPUTS

MIN.

TYP.

MAX.

UNITS

Output Coding

Staight Bin./Offset Bin./Two's Comp.

Comp. Bin./Comp. Offset Bin./C2C

Logic Level

Logic "1"

+2.4

—

—

Volts

Logic "0"

—

—

+0.4

Volts

Logic Loading "1"

—

—

–160

µA

Logic Loading "0"

—

—

+6.4

mA

Internal Reference

Voltage, +25°C

+9.98

+10.0

+10.02

Volts

Drift

—

±13

±30

ppm/°C

External Current

—

—

5

mA

DYNAMIC PERFORMANCE

Slew Rate

—

±250

1

V/µs

Aperature Delay Time

—

—

10

ns

Aperature Uncertainty

—

—

±5

ps

S/H Aquisition TIme

(to ±0.003%FS, 10V step)

—

250

350

ns

Total Harm. Distort. (–0.5dB)

dc to 100kHz

–78

–85

—

dB

100kHz to 500kHz

–77

–80

—

dB

Signal-to-Noise Ratio

(w/o distortion, –0.5dB

dc to 100kHz

75

80

—

dB

100kHz to 500kHz

74

77

—

dB

Signal-to-Noise Ratio

(and distortion, –0.5dB)

dc to 100kHz

74

80

—

dB

100kHz to 500kHz

73

78

—

dB

Spurious Free Dyn. Range Œ

dc to 100kHz78

78

86

—

dB

100 to 500kHz

77

83

—

dB

Two-tone IMD

240kHz, fs = 2.0Mhz,

–0.5dB)

—

–85

—

dB

Input Bandwidth (–3dB)

Small Signal (–20dB input)

—

6

—

MHz

Large Signal (–0dB input)

—

1.75

—

MHz

Feedthrough Rejection

—

87

—

dB

Overvoltage Recovery, ±12V

—

1000

2000

ns

A/D Conversion Rate

1

—

—

MHz

Noise

—

250

—

µVrms

POWER REQUIREMENTS

Power Supply Ranges

+15V Supply

+14.25

+15.0

+15.75

Volts

–15V Supply

–14.25

–15.0

–15.75

Volts

+5V Supply

+4.75

+5.0

+5.25

Volts

Power Supply Currents

+15V Supply

—

+62

+85

mA

–15V Supply

—

–80

–95

mA

+5V Supply

—

+140

+160

mA

Power Dissipation

—

2.8

3.3

Watts

Power Supply Rejection

—

—

±0.02

%FSR%V

PHYSICAL/ENVIRONMENTAL

Operating Temp. Range, Case

ADS-941MC

0

—

+70

°C

ADS-941ME

–40

—

+85

°C

Storage Temperature Range

–65

—

+150

°C

Package Type

32-pin, metal-sealed, ceramic TDIP

Weight

0.46 ounces (13 grams)

ABSOLUTE MAXIMUM RATINGS

PARAMETERS

LIMITS

UNITS

+15V Supply (Pin 12)

0 to +16

Volts

–15V Supply (Pin 13)

0 to –16

Volts

+5V Supply (Pin 10)

0 to +6.0

Volts

Digital Inputs (Pin 8,9, 32)

Volts

Analog Input (Pin 3)

±15

Volts

Lead Temp. (10 seconds)

300

°C

FUNCTIONAL SPECIFICATIONS

warmup unless otherwise specified.)

ANALOG INPUTS

MIN.

TYP.

MAX.

UNITS

Input Voltage Range

Unipolar

—

0 to +10

—

Volts

Bipolar

—

±5

—

Volts

Input Impedence

2.2

2.5

—

k

Ω

Input Capacitance

—

7

15

pF

DIGITAL INPUTS

Logic Levels

Logic "1"

+2.0

—

—

Volts

Logic "0"

—

—

+0.8

Volts

Logic Loading "1"

—

—

+10

µA

Logic Loading "0"

—

—

–600

µA

PERFORMANCE

Integral Non-Linearity

+25°C

—

±1

±2

LSB

0 to +70°C

—

±1.5

±2

LSB

–40 to +85°C

—

±2

±3

LSB

Differential Non-Linearity

+25°C

–0.75

±0.5

±0.75

LSB

0 to +70°C

–0.95

±0.75

±0.95

LSB

–40 to +85°C

–1

±0.95

+2.5

LSB

Full Scale Absolute Accuracy

+25°C

—

±0.1

±0.122

%FSR

0 to +70°C

—

±0.12

±0.36

%FSR

–40 to +85°C

—

±0.45

±0.85

%FSR

Unipolar Zero Error

+25°C (see Figure 3)

—

±0.05

±0.122

%FSR

0 to +70°C

—

±0.1

±0.2

%FSR

–40 to +85°C

—

±0.2

±0.3

%FSR

Bipolar Zero Error

+25°C (see Figure 3)

—

±0.05

±0.122

%FSR

0 to +70°C

—

±0.1

±0.2

%FSR

–40 to +85°C

—

±0.2

±0.3

%FSR

Bipolar Offset Error

+25°C (see Figure 3)

—

±0.1

±0.12

%FSR

0 to +70°C

—

±0.12

±0.3

%FSR

–40 to +85°C

—

±0.6

±0.8

%FSR

Gain Error

+25°C (see Figure 3)

—

±0.018

±0.122

%

0 to +70°C

—

±0.12

±0.3

%

–40 to +85°C

—

±0.6

±0.8

%

14 Bits

0 to +70°C

Resolution

14 Bits

Footnote:

ΠSame specification as In-Band Harmonics and Peak Harmonics.