DC1241B-AA Linear Technology, DC1241B-AA Datasheet - Page 18

• Manufacturer Part Number: DC1241B-AA
• Description: BOARD EVAL LTM9001-AA
• Manufacturer: Linear Technology
• Type: Baseband Receiverr

Specifications of DC1241B-AA

• Design Resources: DC1241B Schematic
• Frequency: 0Hz ~ 300MHz
• Features: LTM9001 16bit Receiver Subsystem, 162MHz BPF
• Tool / Board Applications: Wireless Connectivity-ZigBee, RF, Infrared, USB
• Mcu Supported Families: LTM9001
• Development Tool Type: Hardware - Eval/Demo Board
• For Use With/related Products: LTM9001
• Lead Free Status / RoHS Status: Not applicable / Not applicable

OPERATION
LTM9001-Ax/LTM9001-Bx
The following sections describe in further detail the func-
tional operation of the LTM9001. The SiP technology allows
the LTM9001 to be customized and this is described in
the fi rst section. The remaining outline follows the basic
functional elements as shown in Figure 1.
SEMI-CUSTOM OPTIONS
The μModule construction affords a new level of fl exibility in
application-specifi c standard products. Standard ADC and
amplifi er components can be integrated regardless of their
process technology and matched with passive components
to a particular application. The LTM9001-AA, as the fi rst
example, is confi gured with a 16-bit ADC sampling at rates
up to 130Msps. The amplifi er gain is 20dB with an input
impedance of 200Ω and an input range of 233mV
matching network is designed to optimize the interface
between the amplifi er output and the ADC under these
conditions. Additionally, there is a 2-pole bandpass fi lter
designed for 162.5MHz ±25MHz.
However, other options are possible through Linear Tech-
nology’s semi-custom development program. Linear
Table 1. Semi-Custom Options
Select Combination of Options from Columns Below
18
AMPLIFIER IF
DC-300MHz
DC-140MHz
DC-70MHz
DC-35MHz
300MHz
300MHz
300MHz
RANGE
AMPLIFIER
Figure 1. Basic Functional Elements
AMPLIFIER INPUT
IMPEDANCE
200Ω
200Ω
400Ω
200Ω
200Ω
400Ω
200Ω
50Ω
NETWORK
INPUT
ADC
AMPLIFIER GAIN
20dB
14dB
26dB
20dB
14dB
8dB
8dB
6dB
ADC
9001 F01
162.5MHz BPF , 50MHz BW
70MHz BPF, 25MHz BW
DC-300MHz LPF
P-P
BPF TBD
LPF TBD
. The
FILTER
Technology has in place a program to deliver other speed,
resolution, IF range, gain and fi lter confi gurations for a
wide range of applications. See Table 1 for the LTM9001-AA
confi guration and potential options. These semi-custom
designs are based on existing ADCs and amplifi ers with
an appropriately modifi ed matching network. The fi nal
subsystem is then tested to the exact parameters defi ned
for the application. The fi nal result is a fully integrated,
accurately tested and reliable solution. For more details
on the semi-custom receiver subsystem program, contact
Linear Technology.
Note that not all combinations of options in Table 1 are
possible at this time and specifi ed performance may differ
signifi cantly from existing values. This data sheet discusses
devices with LVDS and CMOS outputs. The lower speed
options that only support CMOS outputs are available on
a separate data sheet. The CMOS-only options have a
different pin assignment.
AMPLIFIER INFORMATION
The amplifi ers used in the LTM9001 are low noise and low
distortion fully differential ADC drivers. The amplifi ers are
very fl exible in terms of I/O coupling. They can be AC- or
DC-coupled at the inputs. Users are advised to keep the
input common mode voltage between 1V and 1.6V for
proper operation. If the inputs are AC-coupled, the input
common mode voltage is automatically biased. The input
signal can be either single-ended or differential with almost
no difference in distortion performance.
ADC SAMPLE
130Msps
130Msps
160Msps
160Msps
130Msps
105Msps
80Msps
65Msps
40Msps
25Msps
10Msps
RATE
RESOLUTION
16-bit
16-bit
16-bit
16-bit
14-bit
ADC
LVDS/CMOS
LVDS/CMOS
LVDS/CMOS
LVDS/CMOS
LVDS/CMOS
OUTPUT
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
PART NUMBER
LTM9001-AD
LTM9001-AA
LTM9001-BA
9001fc