 |
Zakładka z wyszukiwarką danych komponentów |
|
|
Zakładka z wyszukiwarką danych komponentów |
|
AD668 Arkusz danych(PDF) 10 Page - Analog Devices |
|
||||||||||||||||||||||||||||||
AD668 Arkusz danych(HTML) 10 Page - Analog Devices |
|
|
10 / 16 page  AD668 REV. A –10– Figure 11. AD586 Driving the AD668 mode (Pin 22 grounded, input into Pin 21). Fine adjustment of the gain is provided by both the AD586 external trim resistor and the 100 Ω potentiometer in series with the reference input. The resistive divider at the reference input will draw approxi- mately 1 mA from the AD586, leaving plenty of driving current for other loads in the system. AC HOOKUP: 1.25 V AC FULL SCALE, 2.5 V DC FULL SCALE The circuit shown in Figure 12 allows separate setting of dc ref- erence bias point on a 2.5 V scale and capacitively coupled ac signal on a 1.25 V scale. The basic reference input is configured in the 1.25 V mode (Pin 21 grounded, Pin 22 used as the refer- ence input.) The 2.5 V dc range is achieved by using an external Table II. AD668 Topology Variations OUTPUT LEVELS Nominal Analog Input 0 V to 1 V –500 mV to +500 mV 0 V to –10 V +5 V to –5 V –1 V to +1 V Unipolar Bipolar Unipolar Bipolar Bipolar 1 V Unbuffered VOUT Unbuffered VOUT Buffered VOUT Buffered VOUT Unbuffered VOUT AIN = Pins 21 + 22 AIN = Pins 21 + 22 AIN = Pins 21 + 22 AIN = Pins 21 + 22 AIN = Pins 21 + 22 External Amplifier External Amplifier RL (Pin 19) Tied (See Figure 10) To IOUT (Pin 20) Unipolar Bipolar Unipolar Bipolar Bipolar Unbuffered VOUT Unbuffered VOUT Buffered VOUT Buffered VOUT Unbuffered VOUT 1.25 V AIN = Pin 22 AIN = Pin 22 AIN = Pin 22 AIN = Pin 22 AIN = Pin 22 Pin 21 Grounded Pin 21 Grounded Pin 21 Grounded Pin 21 Grounded Pin 21 Grounded (See Figure 8) External Amplifier External Amplifier RL (Pin 19) Tied To IOUT (Pin 20) Unipolar Bipolar Unipolar Bipolar Bipolar Unbuffered VOUT Unbuffered VOUT Buffered VOUT Buffered VOUT Unbuffered VOUT 5 V AIN = Pin 21 AIN = Pin 21 AIN = Pin 21 AIN = Pin 21 AIN = Pin 21 Pin 22 Grounded Pin 22 Grounded Pin 22 Grounded Pin 22 Grounded Pin 22 Grounded (See Figure 7) External Amplifier External Amplifier RL (Pin 19) Tied To IOUT (Pin 20) (See Figure 9) 5k series resistor in the dc path. Note that because of the rela- tively wide tolerance ( ±20%) in the absolute value of the AD668’s internal input divider resistors, substantial gain range adjustment should be provided in the external series resistance. Figure 12. AC Hookup DAC DRIVE: THE AD568 DRIVING THE AD668 The circuit shown in Figure 13 produces an analog output pro- portional to the product of two digital inputs. The AD568 has an on-board fixed reference and generates a full-scale output voltage of 1.024 V (just as the AD668 does in its unbuffered voltage output mode). This output voltage can be used to di- rectly drive the AD668 in the 1 V reference input mode. Note that in this case, the lower 410 codes of the AD568 are out-of- bounds; they produce an undervoltage condition at the AD668 |
Podobny numer części - AD668 |
|
Podobny opis - AD668 |
|
|
|
Link URL |
| Polityka prywatności |
| ALLDATASHEET.PL |
| Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Polish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
