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參數資料
| 型號： | AD7734 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 4-Channel, +-10 V Input Range, High Throughput, 24-Bit sigma ∆ ADC |
| 文件頁數： | 12/32頁 |
| 文件大?。?/td> | 1542K |
| 代理商： | AD7734 |
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AD7734
PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS
Rev. 0 | Page 12 of 32
TOP VIEW
(Not to Scale)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AD7734
BIAS1
AIN1
AIN0
BIAS0
MUX0
INTBIAS
SYNC/P1
SCLK
MCLKIN
CS
P0
AV
DD
RESET
BIAS2
AIN2
AIN3
BIAS3
BIASLO
BIASHI
REFIN(+)
DGND
DV
DD
DIN
DOUT
REFIN(–)
AGND
RDY
MCLKOUT
Figure 11. 28-Lead TSSOP
P0
SYNC/P1
AIN0
AIN3
AIN1
BIAS0
BIAS1
BIASHI
BIAS3
BIASLO
INTBIAS
MUX0
AIN2
BIAS2
SCLK
DIN
DOUT
CS
RESET
RDY
DGND
MCLKIN
MCLKOUT
AGND AV
DD
DV
DD
AV
DD
DV
DD
7R
R=15.5k
R
7R
R
R
7R
R
7R
7R
BUFFER
REFERENCE
DETECT
REFIN(–)
REFIN(+)
AD7734
24-BIT
Σ
-
ADC
SERIAL
INTERFACE
CONTROL
LOGIC
CLOCK
GENERATOR
CALIBRATION
CIRCUITRY
I/O PORT
MUX
Figure 12. Block Diagram
Table 10. Pin Function Descriptions—28-Lead TSSOP
Pin No.
Mnemonic
1
SCLK
Description
Serial Clock. Schmitt triggered logic input. An external serial clock is applied to this input
to transfer serial data to or from the AD7734.
Master Clock Signal for the ADC. This can be provided in the form of a crystal/resonator
or external clock. A crystal/resonator can be tied across the MCLKIN and MCLKOUT pins.
Alternatively, the MCLKIN pin can be driven with a CMOS compatible clock and
MCLKOUT left unconnected.
When the master clock for the device is a crystal/resonator, the crystal/resonator is
connected between MCLKIN and MCLKOUT. If an external clock is applied to the
MCLKIN, MCLKOUT provides an inverted clock signal or can be switched off to reduce
the device power consumption. MCLK OUT is capable of driving one CMOS load.
Chip Select. Active low Schmitt triggered logic input with an internal pull-up resistor.
With this input hardwired low, the AD7734 can operate in its 3-wire interface mode
using SCLK, DIN, and DOUT. CS can be used to select the device in systems with more
than one device on the serial bus. It can also be used as an 8-bit frame
synchronization signal.
Schmitt Triggered Logic Input. Active low input that resets the control logic, interface
logic, digital filter, analog modulator, and all on-chip registers of the part to power-on
status. Effectively, everything on the part except the clock oscillator is reset when the
RESET pin is exercised.
Analog Positive Supply Voltage. 5 V to AGND nominal.
Digital Input/Output. The pin direction is determined by the P0 DIR bit; the digital
value can be read/written as the P0 bit in the I/O port register. The digital voltage is
referenced to analog supplies. When configured as an input, the pin should be tied
high or low.
SYNC/Digital Input/Digital Output. The pin direction is determined by the P1 DIR bit;
the digital value can be read/written as the P1 bit in the I/O port register. When the
SYNC bit in the I/O port register is set to 1, then the SYNC/P1 pin can be used to
synchronize the AD7734 modulator and digital filter with other devices in the system.
The digital voltage is referenced to analog supplies. When configured as an input, the
pin should be tied high or low.
2
MCLKIN
3
MCLKOUT
4
CS
5
RESET
6
7
AV
DD
P0
8
SYNC/P1
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相關代理商/技術參數 |
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| AD7734BRU | 功能描述:IC ADC 24BIT 4-CH 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯(lián) 轉換器數目: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） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7734BRU-REEL | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 3.05Msps 24-bit Serial 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 15.437KSPS 24BIT SERL 28TSSOP - Tape and Reel |
| AD7734BRU-REEL7 | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 3.05Msps 24-bit Serial 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 15.437KSPS 24BIT SERL 28TSSOP - Tape and Reel |
| AD7734BRUZ | 功能描述:IC ADC 24BIT 4-CH 28-TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率（每秒）:20M 數據接口:并聯(lián) 轉換器數目:2 功率耗散（最大）:155mW 電壓電源:模擬和數字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數目和類型:4 個單端，單極；2 個差分，單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD7734BRUZ | 制造商:Analog Devices 功能描述:IC 24BIT ADC SMD 7734 TSSOP28 |
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