LTC1274 Linear Technology, LTC1274 Datasheet - Page 20

• Manufacturer Part Number: LTC1274
• Description: 12-Bit/ 10mW/ 100ksps ADCs with 1uA Shutdown
• Manufacturer: Linear Technology

LTC1274/LTC1277
PACKAGE DESCRIPTIO
(0.229 – 0.330)
PART NUMBER
LTC1272
LTC1273/75/76
LTC1278
LTC1279
LTC1282
LTC1409
LTC1410
20
A
In the Sleep mode, the comparator of the ADC will start
consuming power after the rising edge of SLEEP as shown
NOTE:
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS
RELATED PARTS
COMPARATOR
**
0.009 – 0.013
*
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS.
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
PPLICATI
REFRDY
STATUS
Figure 18a. Power Saved in Sleep Mode (NAP = HIGH)
SLEEP
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
(0.254 – 0.737)
0.010 – 0.029
NOTE 1
(7.391 – 7.595)
0.291 – 0.299**
ON
(0.406 – 1.270)
0.016 – 0.050
DESCRIPTION
12-Bit, 3 s, 250kHz Sampling A/D Converter
12-Bit, 300ksps Sampling A/D Converters with Reference
12-Bit, 500ksps Sampling A/D Converter with Shutdown
12-Bit, 600ksps Sampling A/D Converter with Shutdown
12-Bit, 140ksps Sampling A/D Converter with Reference
12-Bit, 800ksps Sampling A/D Converter with Shutdown
12-Bit, 1.25Msps Sampling A/D Converter with Shutdown
O
45
U
FAX
S
: [phone]
0 – 8 TYP
I FOR ATIO
U
(2.362 – 2.642)
0.093 – 0.104
OFF
(1.270)
0.050
TYP
TELEX
(0.356 – 0.482)
0.014 – 0.019
W
U
: 499-3977
24-Lead Plastic Small Outline (Wide 0.300)
(C
Dimensions in inches (millimeters) unless otherwise noted.
REF
3ms
= 4.7 F)
U
ON
(LTC DWG # 05-08-1620)
LTC1274/77 • F18a
SW Package
in Figure 18a. If REFRDY is tied to NAP, the comparator will
be powered up after REFRDY’s rising edge. Hence more
power will be saved as in Figure 18b.
NAP = REFRDY
COMPARATOR
(0.940 – 1.143)
0.037 – 0.045
(0.102 – 0.305)
0.004 – 0.012
Figure 18b. Power Saved in Sleep Mode (NAP = REFRDY)
COMMENTS
Single 5V, Sampling 7572 Upgrade
Complete with Clock, Reference
70dB SINAD at Nyquist, Low Power
70dB SINAD at Nyquist, Low Power
Fast, Complete Low Power ADC, 80mV
Fast, Complete Wideband ADC, 160mV
STATUS
3V or 3V ADC with Reference, Clock
SLEEP
NOTE 1
ON
24
1
23
2
22
3
21
4
20 19
(15.190 – 15.600)
5
0.598 – 0.614*
LINEAR TECHNOLOGY CORPORATION 1995
6
OFF
18
7
17
LT/GP 1195 10K • PRINTED IN USA
8
16
9
15
10
(C
14
11
REF
13
12
3ms
= 4.7 F)
(10.007 – 10.643)
0.394 – 0.419
LTC1274/77 • F18b
ON