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參數(shù)資料
| 型號： | LTC1609CG#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 23/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CONV A/D 16BIT 200KSPS 28SSOP |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 200k |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 100mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 3 個(gè)單端，單極；3 個(gè)單端，雙極 |
8
LTC1609
1609fa
16-BIT CAPACITIVE DAC
COMP
REF BUF
2.5V REF
CAP
(2.5V)
CSAMPLE
DATA
DATACLK
SYNC
BUSY
CONTROL LOGIC
R/C
PWRD
SB/BTC
EXT/INT
TAG
INTERNAL
CLOCK
CS
ZEROING SWITCHES
VDIG
VANA
R1IN
R2IN
R3IN
REF
AGND1
AGND2
DGND
1609 BD
+
–
SUCCESSIVE APPROXIMATION
REGISTER
SERIAL INTERFACE
4k
20k
10k
5k
20k
FUNCTIONAL BLOCK DIAGRA
UU
W
APPLICATIO S I FOR ATIO
WU
UU
Conversion Details
The LTC1609 uses a successive approximation algorithm
and an internal sample-and-hold circuit to convert an
analog signal to a 16-bit serial output. The ADC is complete
with a precision reference and an internal clock. The
control logic provides easy interface to microprocessors
and DSPs. (Please refer to the Digital Interface section for
timing information.)
Conversion start is controlled by the CS and R/C inputs. At
the start of conversion the successive approximation
register (SAR) is reset. Once a conversion cycle has begun
it cannot be restarted.
During the conversion, the internal 16-bit capacitive DAC
output is sequenced by the SAR from the most significant
bit (MSB) to the least significant bit (LSB). Referring to
Figure 1, VIN is connected through the resistor divider to
the sample-and-hold capacitor during the acquire phase
and the comparator offset is nulled by the autozero switches.
In this acquire phase, a minimum delay of 2
s will provide
enough time for the sample-and-hold capacitor to acquire
the analog signal. During the convert phase, the autozero
switches open, putting the comparator into the compare
mode. The input switch switches CSAMPLE to ground,
injecting the analog input charge onto the summing junc-
tion. This input charge is successively compared with the
binary-weighted charges supplied by the capacitive DAC.
Bit decisions are made by the high speed comparator. At
VDAC
1609 F01
+
–
CDAC
DAC
SAMPLE
HOLD
CSAMPLE
S
A
R
16-BIT
SHIFT REGISTER
COMPARATOR
SAMPLE
SI
RIN2
RIN1
VIN
Figure 1. LTC1609 Simplified Equivalent Circuit
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| LTC1609CSW#PBF | 功能描述:IC ADC SRL 16BIT 200KSPS 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個(gè)單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC1609CSW#PBF | 制造商:Linear Technology 功能描述:ADC, 16BIT, 200KSPS, SOIC-20 |
| LTC1609CSW#TR | 功能描述:IC A/D CONV 16BIT SAMPLNG 20SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
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