HMCAD1520 Datasheet, PDF (2/36 Pages) Hittite Microwave Corporation – High Speed Multi-Mode 8/12/14-Bit 1000/640/105 MSPS A/D Converter

v03.0711
HMCAD1520
High Speed Multi-Mode 8/12/14-Bit
1000/640/105 MSPS A/D Converter
General Description
The HMCAD1520 is a versatile high performance low power analog-to-digital converter (ADC), with interleaving High
Speed Modes to increase sampling rate. Integrated Cross Point Switches activate the input selected by the user.
In Single Channel Mode, one of the four inputs can be selected as valid input to the single ADC channel. In Dual
Channel Mode, any two of the four inputs can be selected to each ADC channel. In Quad Channel Mode and Precision
Mode, any input can be assigned to any ADC channel.
An internal, low jitter and programmable clock divider makes it possible to use a single clock source for all opera-
tional modes.
The HMCAD1520 is based on a proprietary structure, and employs internal reference circuitry, a serial control inter-
face and a serial LVDS output data. Data and frame synchronization clocks are supplied for data capture at the
receiver. Internal digital fine gain can be set separately for each ADC to calibrate for gain errors.
Various modes and configuration settings can be applied to the ADC through the serial control interface (SPI). each
channel can be powered down independently and output data format can be selected through this interface. A full chip
0
idle mode can be set by a single external pin. Register settings determine the exact function of this pin.
HMCAD1520 is designed to interface easily with Field Programmable Gate Arrays (FPGAs) from several vendors.
DC Specifications
Electrical Specifications
AVDD = DVDD = OVDD = 1.8V, F_S = 160 MSPS, Quad Channel 12-bit High Speed Mode, 50% Clock Duty Cycle,
-1 dBFS 70 MHz Input Signal, 1x / 0 dB Digital Gain (Fine and Coarse), Unless Otherwise Noted
Parameter
DC accuracy
No missing codes
Offset
G_abs
G_rel
DNL
INL
V_CM,out
Analog Input
V_CM,in
FSR
C_in,Q
C_in,D
C_in,S
Power Supply
V_AVDD
V_DVDD
V_OVDD
Temperature
T_A
Description
Min
Offset error after internal digital offset correction
Gain error
Gain matching between channels. ±3 sigma value at worst
case conditions
Differential non linearity
Integral non linearity
Common mode voltage output
Guaranteed
Analog input common mode voltage
Differential input voltage full scale range
Differential input capacitance, Quad channel mode
Differential input capacitance, Dual channel mode
Differential input capacitance, Single channel mode
V_CM -0.1
Analog Supply Voltage
1.7
Digital and output driver supply voltage
1.7
Digital CMOS Input Supply Voltage
1.7
Operating free-air temperature
-40
Typ
1
±0.5
±0.2
±0.6
V_AVDD/2
2
5
7
11
1.8
1.8
1.8
Max
±6
V_CM +0.2
2
2
3.6
85
Unit
LSB
%FS
%FS
LSB
LSB
V
Vpp
pF
pF
pF
V
V
V
°C
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: [e-mail]
0-2