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DATEL

ADS-119 Datasheet Preview

ADS-119 Datasheet

Low-Power Sampling A/D Converters

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®®
ADS-119
12-Bit, 10MHz, Low-Power
Sampling A/D Converters
FEATURES
12-bit resolution
10MHz minimum sampling rate
Functionally complete
Small 24-pin DDIP or SMT package
Requires only ±5V supplies
Low-power, 1.8 Watts
Outstanding dynamic performance
Edge-triggered
No missing codes over temperature
Ideal for both time and frequency-domain applications
GENERAL DESCRIPTION
The ADS-119 is a high-performance, 12-bit, 10MHz sampling
A/D converter. The device samples input signals up to Nyquist
frequencies with no missing codes. The ADS-119 features
excellent dynamic performance including a typical SNR of
69dB.
Packaged in a metal-sealed, ceramic, 24-pin DDIP, the
functionally complete ADS-119 contains a fast-settling sample/
hold amplifier, a subranging (two-pass) A/D converter, a
precise voltage reference, timing/control logic, and error-
correction circuitry. All timing and control logic operates from
the rising edge of a single start convert pulse. Digital input and
output levels are TTL.
Requiring only ±5V supplies, the ADS-119 typically dissipates
1.8 Watts. The unit offers a bipolar input range of ±1.5V.
Models are available for use in either commercial (0 to +70°C)
or military (–55 to +125°C) operating temperature ranges.
INPUT/OUTPUT CONNECTIONS
PIN FUNCTION
PIN FUNCTION
1 BIT 12 (LSB)
2 BIT 11
3 BIT 10
4 BIT 9
5 BIT 8
6 BIT 7
7 BIT 6
8 BIT 5
9 BIT 4
10 BIT 3
11 BIT 2
12 BIT 1
24 NO CONNECT
23 ANALOG GROUND
22 NO CONNECT
21 +5V ANALOG SUPPLY
20 –5V SUPPLY
19 ANALOG INPUT
18 ANALOG GROUND
17 OFFSET ADJUST
16 START CONVERT
15 DATA VALID
14 DIGITAL GROUND
13 +5V DIGITAL SUPPLY
Typical applications include signal analysis, medical/graphic
imaging, process control, ATE, radar, and sonar.
OFFSET ADJUST 17
ANALOG INPUT 19
S/H
+
BUFFER
FLASH
ADC
1
REF
Σ
DAC
AMP
FLASH
ADC
2
12 BIT 1 (MSB)
11 BIT 2
10 BIT 3
9 BIT 4
8 BIT 5
7 BIT 6
6 BIT 7
5 BIT 9
4 BIT 9
3 BIT 10
2 BIT 11
1 BIT 12 (LSB)
START CONVERT 16
DATA VALID 15
TIMING AND
CONTROL LOGIC
21
+5V ANALOG
SUPPLY
13
+5V DIGITAL
SUPPLY
14
DIGITAL
GROUND
20
–5V SUPPLY
18, 23
ANALOG
GROUND
Figure 1. ADS-119 Functional Block Diagram
22, 24
NO CONNECT
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.) Tel: (508) 339-3000 Fax: (508) 339-6356 For immediate assistance: (800) 233-2765




DATEL

ADS-119 Datasheet Preview

ADS-119 Datasheet

Low-Power Sampling A/D Converters

No Preview Available !

ADS-119
®®
ABSOLUTE MAXIMUM RATINGS
PARAMETERS
LIMITS
UNITS
+5V Supply (Pin 13, 21)
–5V Supply (Pin 20)
Digital Input (Pin 16)
Analog Input (Pin 19)
Lead Temp (10 seconds)
0 to +6
0 to –6
–0.3 to +VDD +0.3
±5
+300
Volts
Volts
Volts
Volts
°C
FUNCTIONAL SPECIFICATIONS
(TA = +25°C, ±VDD = ±5V, 10mHz sampling rate, and a minimum
3 minute warmup Πunless otherwise specified.)
+25°C
ANALOG INPUT
MIN.
TYP.
Input Voltage Range 
Input Resistance
Input Capacitance
— ±1.5
300 350
—6
DIGITAL INPUT
MAX.
15
Logic Levels
Logic "1"
+2.0 —
Logic "0"
— — +0.8
Logic Loading "1"
— — +20
Logic Loading "0"
— — –20
Start Convert Positive Pulse Width Ž — 50 —
STATIC PERFORMANCE
Resolution
Integral Nonlinearity (fin = 10kHz)
Differential Nonlinearity (fin = 10kHz)
Full Scale Absolute Accuracy
Bipolar Zero Error (Tech Note 2)
Unipolar Offset Error (Tech Note 2)
Gain Error (Tech Note 2)
No Missing Codes (fin = 10kHz)
DYNAMIC PERFORMANCE
— 12 —
— ±0.75 —
— ±0.5 ±0.95
— ±0.2 ±0.5
— ±0.2 ±0.6
— ±0.1 ±0.6
— ±0.1 ±0.5
12 —
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
1MHz to 2.5MHz
2.5MHz to 5MHz
Signal-to-Noise Ratio 
(& distortion, –0.5dB)
dc to 1MHz
1MHz to 2.5MHz
2.5MHz to 5MHz
Two-tone Intermodulation
Distortion (fin = 100kHz,
240kHz, fs = 1MHz, –0.5dB)
Noise
Input Bandwidth (–3dB)
Small Signal (–20dB input)
Large Signal (–0dB input)
Feedthrough Rejection (fin = 5MHz)
Slew Rate
Aperture Delay Time
Aperture Uncertainty
S/H Aquisition Time
(to ±0.01%FSR, 3V step)
Overvoltage Recovery Time 
A/D Conversion Rate
— –70 –63
— –70 –63
— –70 –63
— –69 –63
— –68 –63
— –68 –63
66 69 —
66 69 —
66 69 —
62 66 —
62 66 —
62 66 —
— –72 —
— 250 —
— 60 —
— 10 —
— 76 —
— ±400 —
—5 —
—3 —
30 35 37
— 100 —
10 — —
PHYSICAL/ENVIRONMENTAL
PARAMETERS
MIN. TYP. MAX. UNITS
Operating Temp. Range, Case
ADS-119MC/GC
ADS-119MM/GM/883
Thermal Impedance
θjc
θca
Storage Temperature
Package Type
Weight
0 — +70 °C
–55 — +125 °C
6 °C/Watt
24 °C/Watt
–65 — +150 °C
24-pin, metal-sealed, ceramic DDIP or SMIT
0.42 ounces (12 grams)
0 to +70°C
MIN.
TYP.
MAX.
— ±1.5
300 350
—6
15
–55 to +125°C
MIN.
TYP.
MAX.
— ±1.5 —
300 350 —
— 6 15
UNITS
Volts
pF
+2.0 —
— +2.0 —
— Volts
— — +0.8 — — +0.8 Volts
— — +20 — — +20 µA
— — –20 — — –20 µA
— 50 — — 50 — ns
— 12 — — 12 — Bits
— ±1.0 —
— ±1.5 — LSB
0.95 ±0.5
+1
–0.95
±0.75
+1.25
LSB
— ±0.5 ±0.75 — ±0.75 ±1.5 %FSR
— ±0.3 ±0.7 — ±0.6 ±1.0
— ±0.3 ±0.7 — ±0.7 ±1.5 %FSR
— ±0.5 ±1.0 — ±1.0 ±2.5 %
12 — — 12 — — Bits
— –70 –63
— –70 –63
— –70 –63
— –69 –63
— –68 –63
— –67 –63
66 69 —
66 69 —
66 69 —
62 66 —
62 66 —
62 66 —
— –72 —
— 300 —
— 60 —
— 10 —
— 76 —
— ±400 —
— 5—
— 3—
30 35 37
— 100 —
500 — —
–69 –61
dB
–69 –60
dB
–67 –60
dB
–68 –60
dB
–67 –60
dB
— –66 –60
63 67 — dB
63 66 — dB
63 66 — dB
60 65 — dB
60 65 — dB
60 64 — dB
— –72
— 400
— 60
— 10
— 76
— ±400
—5
—3
30 35
— 100
500 —
— dB
— µVrms
— MHz
— MHz
— dB
— V/µs
— ns
— ps rms
37 ns
— ns
— MHz
2


Part Number ADS-119
Description Low-Power Sampling A/D Converters
Maker DATEL
Total Page 8 Pages
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