ADS-945
®
®
ABSOLUTE MAXIMUM
PARAMETERS
+15V Supply (Pins 14)
–15V Supply (Pin 12)
+5V Supply (Pins 55, 69)
–5V Supply (Pin 57, 63)
Digital Input (Pin 32, 34)
Analog Input (Pin 4)
Lead Temperature (10 seconds)
LIMITS
0 to +16
0 to –16
0 to +6
0 to –6
–0.3 to +VDD +0.3
–15 to +15
+300
UNITS
Volts
Volts
Volts
Volts
Volts
Volts
°C
PHYSICAL/ENVIRONMENTAL
PARAMETERS
MIN. TYP. MAX. UNITS
Operating Temp. Range, Case
ADS-945
0
ADS-945EX
–55
Thermal Impedance
θjc
—
θca
—
Storage Temperature Range
–65
Package Type
Weight
—
+70
°C
—
+125
°C
10
—
8
—
—
+150
2" x 4" module
2.1 oz. (60 grams)
°C/Watt
°C/Watt
°C
FUNCTIONAL SPECIFICATIONS
(TA = +25°C, ±VCC = ±15V, +VDD = +5V, VDD = –5.2V, 10MHz sampling rate, and a minimum 10 minute warmup ➀ unless otherwise specified.)
ANALOG INPUT
Input Voltage Range ➁
Input Resistance
Input Capacitance
Input Bias Current
DIGITAL INPUT
Logic Levels
Logic "1"
Logic "0"
Logic Loading "1"
Logic Loading "0"
Start Convert Positive Pulse Width ➂
STATIC PERFORMANCE
Resolution
Integral Nonlinearity (dc input)
Differential Nonlinearity (fin = 10kHz)
Full Scale Absolute Accuracy
Bipolar Offset Error (Tech Note 2)
Gain Error (Tech Note 2)
No Missing Codes (fin = 10kHz)
DYNAMIC PERFORMANCE
Peak Harmonics (–0.5dB)
dc to 1mHz
1MHz to 2.5MHz
2.5MHz to 5MHz
Total Harmonic Distortion (–0.5dB)
dc to 1MHz
1MHz to 2.5MHz
2.5MHz to 5MHz
Signal-to-Noise Ratio
(w/o distortion, –0.5dB)
dc to 1MHz
100kHz to 2.5MHz
2.5MHz to 5MHz
Signal-to-Noise Ratio ➃
(& distortion, –0.5dB)
dc to 100kHz
1MHz to 2.5MHz
2.5MHz to 5MHz
Noise
Two-tone Intermodulation
Distortion (fin = 1.975MHz,
2.45MHz, fs = 10MHz, –0.5dB)
Input Bandwidth (–3dB)
Small Signal (–20dB input)
Large Signal (–0.5dB input)
Feedthrough Rejection (fin = 4.85MHz)
Slew Rate
Aperture Delay Time
Aperture Uncertainty
MIN.
—
300
—
—
+25°C
TYP.
±1.25
500
10
±3
MAX.
—
—
15
—
0 to + 0°C
MIN. TYP. MAX.
—
±1.25
—
300
500
—
—
10
15
—
±3
—
55 to +125°C
MIN. TYP. MAX.
—
±1.25
—
300
500
—
—
10
15
—
±3
—
UNITS
Volts
kΩ
pF
µA
+2.0
—
—
+2.0
—
—
+2.0
—
—
Volts
—
—
+0.8
—
—
+0.8
—
—
+0.8
Volts
—
—
+20
—
—
+20
—
—
+20
µA
—
—
–20
—
—
–20
—
—
–20
µA
10
50
—
10
50
—
10
50
—
ns
—
14
—
—
14
—
—
14
—
Bits
—
±0.5
—
—
±0.75
—
—
±1
—
LSB
–0.99
±0.5
+1.5
–0.99
±0.5
+1.5
–0.99
±0.75
+2.5
LSB
—
±0.2
±0.4
—
±0.3
±0.5
—
±0.3
±0.7
%FSR
—
±0.15
±0.25
—
±0.25
±0.5
—
±0.3
±0.7
%FSR
—
±0.1
±0.2
—
±0.2
±0.4
—
±0.3
±0.7
%
14
—
—
14
—
—
14
—
—
Bits
—
–80
–75
—
–80
–75
—
–79
–73
—
–80
–75
—
–80
–74
—
–78
–71
71
75
—
71
75
—
70
74
—
70
77
—
70
74
—
69
73
—
—
110
—
—
–84
—
—
100
—
—
50
—
—
90
—
—
±650
—
—
±8
—
—
2
—
—
—
—
—
—
—
—
–79
–73
—
—
—
—
—
—
—
–78
–71
—
—
—
—
—
—
69
74
—
—
—
—
—
—
—
69
73
—
—
110
—
—
–84
—
—
100
—
—
50
—
—
90
—
—
±650
—
—
±8
—
—
2
—
—
—
—
dB
—
—
—
dB
—
–75
–69
dB
—
—
—
dB
—
—
—
dB
—
–75
–68
dB
—
—
—
dB
—
—
—
dB
67
72
—
dB
—
—
—
dB
—
—
—
dB
65
70
—
dB
—
110
—
µVrms
—
–84
—
dB
—
100
—
MHz
—
50
—
MHz
—
90
—
dB
—
±650
—
V/µs
—
±8
—
ns
—
2
—
ps rms
2