ADS-118 Datasheet Text
ADS-118, ADS-118A
12-Bit, 5MHz, Low-Power Sampling A/D Converters
Features
12-bit resolution 5MHz minimum sampling rate Functionally plete Small 24-pin DDIP Requires only ±5V supplies Low-power, 1.8 Watts Outstanding dynamic performance No missing codes over full military temperature range Edge-triggered, no pipeline delay Ideal for both time and frequency-domain applications
BLOCK DIAGRAM
PRODUCT OVERVIEW
DATEL's ADS-118 and ADS-118A are 12-bit, 5MHz, sampling A/D converters packaged in space-saving 24-pin DDIP’s. The ADS-118 offers an input range of ±1V and has three-state outputs. The ADS-118A has an input range of ±1.25V and Features direct adjustment of offset error.
These functionally plete low-power devices (1.8 Watts) contain an internal fast-settling sample/ hold amplifier, a 12-bit subranging 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. Models are available for use in either mercial (0 to +70°C) or military (- 55 to +125°C) operating temperature ranges.
Applications include radar, transient signal analysis, process control, medical/graphic imaging, and FFT spectrum analysis.
INPUT/OUTPUT CONNECTIONS
PIN FUNCTION
PIN FUNCTION
1 BIT 12 (LSB)
24 NO CONNECTION
2 BIT 11
23 ANALOG GROUND
3 BIT 10
22 NO CONNECTION
4 BIT 9
21 +5V ANALOG SUPPLY
5 BIT 8
20
- 5V SUPPLY
6 BIT 7
19 ANALOG INPUT
7 BIT 6
18 ANALOG GROUND
8 BIT 5
17- ENABLE/OFFSET ADJ.
9 BIT 4...