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參數(shù)資料
| 型號： | MAX19708ETM+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 1/37頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ANLG FRNT END 48-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 10 |
| 通道數(shù)： | 4 |
| 功率（瓦特）： | 36.9mW |
| 電壓 - 電源，模擬： | 3V |
| 電壓 - 電源，數(shù)字： | 3V |
| 封裝/外殼： | 48-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 48-TQFN-EP（7x7） |
| 包裝： | 帶卷 (TR) |
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General Description
The MAX19708 is an ultra-low-power, mixed-signal ana-
log front-end (AFE) designed for TD-SCDMA handsets
and data cards. Optimized for high dynamic perfor-
mance at ultra-low power, the device integrates a dual
10-bit, 11Msps receive (Rx) ADC; dual 10-bit, 11Msps
transmit (Tx) DAC with TD-SCDMA baseband filters;
three fast-settling 12-bit aux-DAC channels for ancillary
RF front-end control; and a 10-bit, 333ksps housekeep-
ing aux-ADC. The typical operating power in Tx-Rx
FAST mode is 36.9mW at a 5.12MHz clock frequency.
The Rx ADCs feature 55dB SNR and 77.4dBc SFDR at a
1.87MHz input frequency with an 11MHz clock frequen-
cy. The analog I/Q input amplifiers are fully differential
and accept 1.024VP-P full-scale signals. Typical I/Q
channel matching is ±0.08° phase and ±0.02dB gain.
The Tx DACs with TD-SCDMA lowpass filters feature -3dB
cutoff frequency of 1.32MHz and > 55dB stopband rejec-
tion at fIMAGE = 4.32MHz. The analog I-Q full-scale output
voltage range is selectable at ±410mV or ±500mV differ-
ential. The output DC common-mode voltage is selec-
table from 0.9V to 1.4V. The I/Q channel offset is
adjustable to optimize radio lineup sideband/carrier sup-
pression. Typical I-Q channel matching is ±0.02dB gain
and ±0.04° phase.
The Rx ADC and Tx DAC share a single, 10-bit parallel,
high-speed digital bus allowing half-duplex operation
for time-division duplex (TDD) applications. A 3-wire
serial interface controls power-management modes, the
aux-DAC channels, and the aux-ADC channels.
The MAX19708 operates on a single +2.7V to +3.3V
analog supply and +1.8V to +3.3V digital I/O supply.
The MAX19708 is specified for the extended (-40°C to
+85°C) temperature range and is available in a 48-pin,
thin QFN package. The Selector Guide at the end of the
data sheet lists other pin-compatible versions in this
AFE family.
Applications
TD-SCDMA Handsets
TD-SCDMA Data Cards
Portable Communication Equipment
Features
Dual 10-Bit, 11Msps Rx ADC and Dual 10-Bit,
11Msps Tx DAC
Ultra-Low Power
36.9mW at fCLK = 5.12MHz, Fast Mode
19.8mW at fCLK = 5.12MHz, Slow Mode
Low-Current Standby and Shutdown Modes
Integrated TD-SCDMA Filters with > 55dB
Stopband Rejection
Programmable Tx DAC Common-Mode DC Level
and I/Q Offset Trim
Excellent Dynamic Performance
SNR = 55dB at fIN = 1.87MHz (Rx ADC)
SFDR = 73dBc at fOUT = 620kHz (Tx DAC)
Three 12-Bit, 1s Aux-DACs
10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and
Data Averaging
Excellent Gain/Phase Match
±0.08° Phase, ±0.02dB Gain (Rx ADC) at
fIN = 1.87MHz
Multiplexed Parallel Digital I/O
Serial-Interface Control
Versatile Power-Control Circuits
Shutdown, Standby, Idle, Tx/Rx Disable
Miniature 48-Pin Thin QFN Package
(7mm x 7mm x 0.8mm)
MAX19708
10-Bit, 11Msps, Ultra-Low-Power
Analog Front-End
________________________________________________________________ Maxim Integrated Products
1
19-3764; Rev 0; 8/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION
KIT
AVAILABLE
Ordering Information
PART*
PIN-PACKAGE
PKG CODE
MAX19708ETM
48 Thin QFN-EP**
T4877-4
MAX19708ETM+
48 Thin QFN-EP**
T4877-4
*All devices are specified over the -40°C to +85°C operating range.
**EP = Exposed paddle.
+Denotes lead-free package.
Functional Diagram and Selector Guide appear at end of
data sheet.
D9
D8
D6
OVDD
D4
D3
D2
D0
D1
OGND
D5
D7
VDD
IDN
IDP
GND
VDD
QDN
QDP
REFN
EXPOSED PADDLE (GND)
REFIN
DAC1
COM
DAC2
37
38
39
40
41
42
43
44
45
46
47
48
12
34
5
67
89
10
24
23
22
21
20
19
18
17
16
15
14
13
ADC1
ADC2
V
DD
GND
V
DD
CS
SCLK
DIN
T/R
SHDN
DOUT
DAC3
THIN QFN
MAX19708
TOP VIEW
REFP
V
DD
IAP
IAN
GND
CLK
GND
V
DD
QAN
QAP
V
DD
GND
11 12
36 35 34 33 32 31 30 29 28 27 26 25
Pin Configuration
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX19708EVCMOD2 | 功能描述:ADC / DAC多通道 Maxim Evaluation System RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX19708EVCMODU | 功能描述:ADC / DAC多通道 10-bit 11Msps Ultra-Low-Power Analog Front-End RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX19708EVKIT | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 Evaluation Kit for the MAX19705 MAX19706 MAX19707 MAX19708 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| MAX1970EEE | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MAX1970EEE+ | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Dual 180 Out 1.4MHz 750mA Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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